-
Date submitted2005-06-25
-
Date accepted2005-07-20
-
Date published2006-01-01
Expediency of application on the Russian market of polymer reagents of domestic production
- Authors:
- D. A. Dernov
The article gives a brief review of currently used reagents. Technological advantages of Kometa-Meteor polymer composition of domestic production are shown, expressed in possible economic benefit, which consists in reduction of expenses for intensification of fluid inflow and preparation of drilling mud. A number of problems encountered in sinking and drilling wells are considered, and the advantages of drilling fluids treated with Kometa-Meteor for such conditions compared to other fluids are shown. It concludes with a review of the pricing of existing reagents.
-
Date submitted2005-06-19
-
Date accepted2005-07-23
-
Date published2006-01-01
Advantages of drilling out cylindrical stone products at quarries and methods of their separation from the rock massif
- Authors:
- D. G. Egorov
Manufacturing of large-sized cylindrical blanks from stone slabs with the use of drilling equipment and tools is currently used in the production of a number of technical products. Further improvement of technical and technical means of drilling is the need to use them directly at stone quarries with the possibility of separation from the rock massif, extraction from the borehole, stacking and transportation on specially equipped vehicles.
-
Date submitted2005-06-18
-
Date accepted2005-07-24
-
Date published2006-01-01
Regularities of change of spatial position of a drilling shell in a borehole
- Authors:
- M. V. Zubkov
Deep drilling of glaciers and ice sheets is currently one of the main and most informative ways to study the current state and evolution of the glaciation of our planet. As it is known, there are no absolutely vertical boreholes, all boreholes have deviations. In case of drilling accidents causing jamming of the drill bit in the borehole, the main task is to deviate, bypass the drill bit to continue further drilling. In order to perform these operations, it is necessary to know the regularities of the drill bit behavior in the borehole. The article describes the regularity of change of spatial position of the drill bit.
-
Date submitted2005-06-04
-
Date accepted2005-07-22
-
Date published2006-01-01
Technical means for auger drilling in ice
- Authors:
- A. I. Ivanov
The article describes various designs of hand-held auger snow and ice core cutters. Experimental data obtained during laboratory and in situ ice cutting are analyzed in connection with the peculiarities of the cutter geometry.
-
Date submitted2005-06-26
-
Date accepted2005-07-05
-
Date published2006-01-01
Peculiarities of zircon mineralization manifestation in pegmatites of Mamsko-Chuyskaya muscovite province
- Authors:
- E. S. Kiseeva
The article presents the results of goniometric studies, optical and electron microscopy and micro-X-ray spectral analysis of accessory zircon in mica pegmatites of the Mamsko-Chuyskaya province of Eastern Siberia. The study allowed us to decipher ontogenetic features of zircon and reveal the distribution of major and trace elements in certain crystallographic forms. Some statistical regularities in variations of zircon composition are shown. Research Assistant.
-
Date submitted2005-06-25
-
Date accepted2005-07-19
-
Date published2006-01-01
Inhibited polymer-clay compositions for drilling wells on the basis of reagent "Kometa-Meteor"
- Authors:
- M. V. Lukyanov
On the example of geological conditions of the central part of Western Siberia the characteristics of polymer-clay compositions based on the domestic reagent "Kometa-Meteor" and the possibilities of its application for drilling wells are considered. The reagent "Kometa-Meteor" is proposed as a hydration inhibitor in drilling mud. The results of studies have shown that the use of this reagent effectively prevents complications associated with wellbore instability during drilling. A comparative analysis of various compositions based on the polymer "Kometa-Meteor" and other widely used drilling fluid systems has been carried out.
-
Date submitted2005-06-20
-
Date accepted2005-07-22
-
Date published2006-01-01
Environmental assessment of Kostomuksha district of Karelia Republic on the basis of the results of ecological-geochemical research
- Authors:
- Ya. G. Panteleeva
In 1999-2002, Karelsky Okatysh conducted environmental monitoring. The results of chemical sampling of soils, surface water and snow cover were used by the author for statistical analysis. Associations of chemical elements were identified using factor analysis. The average element contents in different soil horizons were compared. A map of S and Pb content in the soil organic layer was drawn up. The migration of chemical compounds in the Kento-Kenti aquatic system was studied. Data from snow gauge surveys for heavy metal content were processed using factor analysis. Factor score maps were constructed, which allowed the identification of areas with the highest deposition of (Cd, Mn, Zn); Fe; (Ni, Fe, Cu). The role of geochemical monitoring as a means of environmental control was shown.
-
Date submitted2005-06-23
-
Date accepted2005-07-20
-
Date published2006-01-01
Conducting magnetotelluric works in conditions of industrial interference on the example of works in the Republic of Adygea
- Authors:
- M. M. Pechenkin
- T. V. Davydkina
The article considers the features of magneto-telluric sounding (MT sounding) in conditions of strong interference of industrial noises on the example of works carried out in the Republic of Adygea, and also briefly describes the main methods of interference suppression.
-
Date submitted2005-06-25
-
Date accepted2005-07-03
-
Date published2006-01-01
A geochemical and mineral associations of gold ore occurrences of Yanisyarvinsky area (South Karelia)
- Authors:
- O. A. Savicheva
Features of element and mineral composition of the Alattu and Yanis gold occurrences in the Yanisyarvi district of South Karelia are considered. It was established that ore minerals in the Alattu deposit were formed during the pre-mining (arsenopyrite-quartz), early (gold-arsenopyrite), middle (freibergite-sphalerite-galenite), late (pyrrotite-gudmundite-native antimony), and hypergenic stages. The main (Au-As) and (Zn-Pb-Ag-Cu-Bi) elemental associations related to mineral associations of the early and middle ore stages were identified. The Au-Bi-Ag-Sn-Pb-W element association established in the Yanis deposit suggests a gold-red-metal ore type.
-
Date submitted2005-06-27
-
Date accepted2005-07-14
-
Date published2006-01-01
Experimental research stand for studying downhole processes of ARPD deposition
- Authors:
- Kh. A. Sarsenbaev
The article substantiates the necessity of creating a bench for studying the process of AGPD (asphalt-hummin-paraffin deposition) by simulating bottomhole space. The article presents the scheme of the stand operation for well research, and also summarizes the existing problems in the operation of oil wells with high content of asphalt-hummin-paraffin deposits. Methods of prevention and elimination of deposits are considered, explaining the importance of development of a test bench for investigation of downhole space. The main elements of the test bench are described.
-
Date submitted2005-06-27
-
Date accepted2005-07-03
-
Date published2006-01-01
Sorption treatment of mine water from fluorine and boron at the Yakovlevskoye site
- Authors:
- A. G. Stukkei
The aim of the work is to experimentally study the possibility of reducing the concentrations of polluting components in mine waters of Yakolevsky mine. The physical and chemical processes of fluoride and borate sorption in static and dynamic conditions were studied; recommendations on prevention of river system pollution were developed.
-
Date submitted2005-06-25
-
Date accepted2005-07-03
-
Date published2006-01-01
Comparative analysis of methods for determining qualitative characteristics of facing stone of the Karelian Isthmus
- Authors:
- A. Ya. Tutakova
The methods of determining decorative properties of facing stone, fracturing and yield of blocks in the deposits of the Karelian Isthmus have been analyzed. The form of representation of a deposit in the catalog illustrating varieties of facing stone of the region is developed. The method of determining the theoretical (predicted) yield of blocks by the equation of dependence of natural blocks yield on the area specific fracturing of steeply falling and inclined fractures, taking into account the losses during the extraction of commercial blocks, is proposed.
-
Date submitted2005-06-14
-
Date accepted2005-07-04
-
Date published2006-01-01
Justification of application of new composite materials in plugging solutions for cementing the borehole borehole space in the interval of perforation works
- Authors:
- R. A. Usmanov
The article considers topical problems of construction and operation of oil and gas wells; issues of cracks in the cement stone in the process of perforation of the casing string. Chemical and physical methods of influence on the plugging solution to improve the quality of the well casing are investigated and applied. The technique of application of chemical reagents, including cationic surfactants in composite plugging suspensions has been developed. Recommendations are given for perforating operations, at which the deleterious effect of thermomechanical loads on the well support is minimized.
-
Date submitted2005-06-22
-
Date accepted2005-07-09
-
Date published2006-01-01
Development of bitumen fields of the Republic of Tatarstan by drilling special wells
- Authors:
- N. V. Faizullina
Lately there has been a growing interest in the development of bitumen fields in the world. The Republic of Tatarstan has significant reserves of high-viscosity oils and natural bitumen, which in the future may become an alternative to conventional oil. Undoubtedly, one of the most promising strategic directions of development of fields with hard-to-recover reserves is their development by horizontal wells. For fields and deposits of elongated shape, when the length of the deposit exceeds its width several times, the most expedient is drilling of a heat-injection well with a sinusoidal horizontal section relative to the general direction of the deposit.
-
Date submitted2005-06-11
-
Date accepted2005-07-06
-
Date published2006-01-01
Prospects of development of horizontal technologies at development of oil and gas fields
- Authors:
- V. V. Feller
To increase the efficiency of drilling horizontal wells, the formation of a rotary-regressive flow of flushing fluid is justified. In this flow it is possible to increase in hundreds times active forces causing cuttings removal. The use of the swirling flow when drilling a horizontal borehole allows to reduce the construction time and cost of the well.
-
Date submitted2005-06-15
-
Date accepted2005-07-30
-
Date published2006-01-01
Investigation of the efficiency of the cutting slot to reduce seismic impact during tunnel construction
- Authors:
- E. Yu. Vinogradova
The paper considers the issue of seismic protection of the environment and protected objects during drilling and blasting method of tunneling. It is shown that the creation of a cut-off slot reduces the amplitude values of seismic blast waves at least three times. This experimental fact made it possible to use the cut-off slit for tunneling the gallery of the Krasno-Polyansky tunnel using blasting.
-
Date submitted2005-06-14
-
Date accepted2005-07-14
-
Date published2006-01-01
Choice of rational technology of development of V. Grib diamondiferous pipe
- Authors:
- M. A. Vorona
Various methods of development of the V. Grib diamondiferous pipe located in the territory of the Arkhangelsk region are considered; the most rational technology of development of this deposit is proposed. These methods of development include: the use of excavators, dredgers and cutter combines, the technology of drilling large-diameter wells. All the above mentioned methods have already been applied at diamondiferous pipes of the Russian Federation and proved the expediency of their use: dredging equipment and technology for drilling large-diameter wells at the Arkhangelskaya and Karpinsky pipes in the Arkhangelsk Region, and milling machines at the Yubileynaya pipe in the Sakha Republic.
-
Date submitted2005-06-25
-
Date accepted2005-07-07
-
Date published2006-01-01
Justification of resource-saving technological schemes of mining of powerful steep formations
- Authors:
- E. V. Glushchenkov
The factors that have the greatest influence on the probability of endogenous fires during the mining of thick steep formations of the Prokopyevsk-Kiselevskoye field in Kuzbass have been determined. The study of stress-strain state of sublevel coal pillars with the use of continuum mechanics approaches was carried out. It is concluded that the sublevel coal pillar left nowadays at the mines of OOO MC Prokopyevskugol is destroyed and does not fulfill isolating functions, being in the end the main or indirect source of fire hazard. The method of mining of thick steep seams prone to spontaneous combustion is proposed, which excludes sublevel coal seals and provides reliable isolation of the mined area.
-
Date submitted2005-06-23
-
Date accepted2005-07-21
-
Date published2006-01-01
Environmental monitoring of the Krasny Bor toxic waste disposal site
- Authors:
- E. V. Eldina
Intensive development of industry leads to an increase in the amount of various wastes, from household garbage to radioactive and chemical wastes. Storage of these wastes leads to the emergence of environmentally unfavorable territories - technogenic arrays, affecting directly the natural environment and humans. The purpose of the work is to study the migration of polluting components from the territory of the Krasny Bor waste disposal site, as well as the choice of a set of environmental protection measures.
-
Date submitted2005-06-10
-
Date accepted2005-07-27
-
Date published2006-01-01
Stripping and preparation of new horizons at formation of a working zone of a quarry
- Authors:
- I. A. Ishkulova
When forming the lower part of the working zone of the open pit - opening and preparation of new horizons - insufficient attention is paid to the shape of the excavated space of the lower horizon, which often cannot provide the most rational parameters of the blasted block, and therefore the maximum length of the mining front, which should compensate for the deficit arising from the mining front on the upper horizons. The present work provides the formation of the shape and parameters of the preparatory excavation, its position relative to the ore deposit and ensuring the maximum length of the mining front, taking into account the rational use of drilling and blasting.
-
Date submitted2005-06-11
-
Date accepted2005-07-10
-
Date published2006-01-01
Monitoring of soil and vegetation cover in the zone of impact of OAO Boksitogorsky Alumina
- Authors:
- D. S. Korelskii
In the course of practical research in the zone of influence of the metallurgical industry enterprise "Boksitogorsk alumina" in Boksitogorsk the sizes of the real zone of negative influence of the enterprise were obtained. They practically on a row exceed those obtained by theoretical calculations according to the OND-86 methodology, universally applied for calculation of atmospheric air pollution in the Russian Federation. Many residential, agricultural and forestry lands are located in the zone of negative impact of the enterprise. This substantiates the necessity to conduct engineering and environmental studies in the impact zones of large enterprises of the mineral and raw materials complex.
-
Date submitted2005-06-25
-
Date accepted2005-07-27
-
Date published2006-01-01
Peculiarities of geological structure of Vasilievsky Island and their connection with the condition of the housing stock
- Authors:
- D. S. Kuznetsova
The relevance of the topic is determined by two factors. Firstly, intensive development of construction in large industrial and cultural centers of Russia. Here a number of engineering aspects, in particular, the state of the soil, are often sacrificed to considerations of economic feasibility. Secondly, the study of geologic environment parameters at the initial stage of construction activities. In this case, the geological environment may be non-stationary due to, for example, seasonal processes of thawing and freezing of the upper part of the section, creep of the decompacted Quaternary complex, small movements along the fault plane.
-
Date submitted2005-06-29
-
Date accepted2005-07-15
-
Date published2006-01-01
Cleaning of near-surface sediments from oil pollution in conditions of swamp landscapes of Western Siberia
- Authors:
- M. M. Malyshkin
One of the major environmental problems in Russia is the pollution of the natural environment by oil and oil products. The work is devoted to oil spill cleanup in the swampy landscapes of Western Siberia. The problem of oil collection is proposed to be solved by the available equipment and personnel, using forced methods, and to intensify oil collection in swampy areas to build excavations in natural depressions and drainage ditches to them along the flow lines, and then apply water washing with simultaneous localization of the territory. The schemes developed and proposed by the author to improve the efficiency of oil collection from waterlogged areas are used in practice and included in the guiding document of Surgutneftegaz.
-
Date submitted2005-06-10
-
Date accepted2005-07-24
-
Date published2006-01-01
Influence of ascending order of mining on stressed state of ore massif
- Authors:
- D. Yu. Minaev
The stresses at the edge of the ore massif at the ascending and descending order of deposit mining were compared. As a result of theoretical calculations, it was obtained that when working at deep horizons, the stresses in the ascending order are less than in the descending order.
-
Date submitted2005-06-22
-
Date accepted2005-07-13
-
Date published2006-01-01
Analysis of granulometric composition of blasted rock mass
- Authors:
- D. V. Movchan
A description of carrying out automatic analysis of rock mass particle size distribution from a photograph is presented. Conducting blast analysis is a difficult problem. The most accurate method is sieve analysis, which is costly and time-consuming. Therefore, the area of its application is very limited. The most common planimetric (more often - photoplanimetric) method of assessing the granulometric composition. Photoplanimetric analysis can be automated using a personal computer (PC). The image on the PC is entered from a digital camera, it is possible to use a scanned photo, provided that it is made from a professional camera. The program pre-processes the image by selecting the contours of objects. After manual correction, each object is calculated and statistically analyzed.
-
Date submitted2005-06-20
-
Date accepted2005-07-22
-
Date published2006-01-01
Development of small watered placers by mini-drakes
- Authors:
- D. S. Opryshko
To date, Russia is one of the few countries that has huge reserves of gold - over 25 thousand tons. Obviously, the creation of a system of effective exploitation of its deposits and rational use of the extracted metal largely predetermines the possibility of economic recovery in general and its development in the future, this is due to the special importance of gold among other natural formations. This paper considers the prospects of involvement in the exploitation of small watered placer gold deposits and summarizes the practical experience in the use of excavation and processing block-modular equipment in the exploitation of such deposits. At the same time, recommendations for the use of certain complexes of operating equipment in specific conditions are proposed and substantiated. Priority sources of power supply of equipment in the development of small watered placers are determined, the methodology of preliminary determination of the project profitability is presented.
-
Date submitted2005-06-02
-
Date accepted2005-07-13
-
Date published2006-01-01
Environmental and geochemical features of slag dumps transformation in the acidification zone
- Authors:
- M. V. Parshina
The conducted studies prove the necessity to increase the hazard class of waste from the pyrometallurgical processing of Severonickel enterprise due to erosion and hypergenic processes, which cause water pollution with toxic metals and sharp decrease in pH level. Formation of acidic waters leads to transformation of the composition of cover sediments, surface and ground waters, as well as to increase of migration ability of polluting elements. Criterion dependences of transformation of mineral and chemical composition of mining and metallurgical wastes are established. The ways to reduce the technogenic load on the soil and vegetation cover and natural waters in the acidification zones are proposed: construction of a geochemical barrier for old, already stockpiled waste and change of the enterprise technology at the stage of slag formation and transportation.
-
Date submitted2005-06-10
-
Date accepted2005-07-27
-
Date published2006-01-01
Improvement of individual protection means for works in conditions of the North
- Authors:
- S. N. Poltorykhin
In the Far North, the range of use of personal protective equipment is limited due to the impossibility of their use at temperatures below -10°C. In the Far North, the range of use of personal protective equipment is limited. One of the promising directions is the creation of recuperative heat and moisture exchanger, which provides accumulation of exhaled heat and moisture for heating and moisturizing the inhaled cold air.
-
Date submitted2005-06-15
-
Date accepted2005-07-04
-
Date published2006-01-01
Estimation of technogenic impact of tailing dump of Mikhailovsky MPP on adjacent agrolandscapes
- Authors:
- I. K. Ponurova
In mining and industrial areas, the air basin is polluted mainly by dust, which has a negative impact on the adjacent landscapes and public health. One of the powerful sources of dust emissions is dusty surfaces of tailings containing heavy metals. The results of the conducted researches of iron-ore enrichment waste prove the necessity of searching for rational means and ways to reduce dust emissions into the atmosphere of tailing dump surfaces. The article presents the results of analysis and assessment of the negative impact of the mining and metallurgical enterprise on the components of the natural environment and public health.
-
Date submitted2005-06-12
-
Date accepted2005-07-02
-
Date published2006-01-01
Safety of blasting operations with industrial explosives based on utilized powders
- Authors:
- S. Yu. Semenyak
The article deals with the issue of the peaceful use of conversion explosives, powders used in mines, shells, torpedoes, aerial bombs, solid and liquid rocket fuel, etc. It does not touch upon other aspects of application of defense industry products in the national economy. Comparisons of the main safety characteristics of blasting operations with the use of conversion explosives: gelpor, granipor and TNT are given. The dependence of the mass fraction of harmful substances in the detonation products of gelpora, granipor and TNT on the temperature at isoentropic expansion is considered.
-
Date submitted2005-06-17
-
Date accepted2005-07-24
-
Date published2006-01-01
Determination of rational location of sectional preparatory excavations at layer systems of development
- Authors:
- S. A. Sidorenko
- A. A. Sidorenko
The paper analyzes the results of mine observations on the condition of area preparatory workings during layer mining of thick gentle strata of Kuzbass. The conclusion is made about the necessity of additional justification of the location of area preparatory workings of the 2nd layer, providing the reduction of costs for their maintenance. The stress-strain state of the rock massif (STS) "perturbed" by the 1st layer mining was investigated. The nature and degree of influence of the 2nd layer overmining were established. The rational location of the 2nd layer preparatory mine workings was chosen for the sloping mining of layer III of the Tom-Usinsky region of Kuzbass. The economic effect from the implementation of the developed recommendations is calculated, which is obtained by reducing the cost of maintaining the operational condition of the area excavations.
-
Date submitted2005-06-18
-
Date accepted2005-07-27
-
Date published2006-01-01
Selection of rational technological schemes of intersection of local emission hazardous zones of the Third potash layer
- Authors:
- Yu. G. Sirenko
- A. A. Golitsyn
The concept of local geological disturbances, type of plunge muldes, their nature and danger is presented. The existing and alternative ways of transition of geological disturbances by mechanized complexes are considered. The calculation of the cost of transition of geological disturbance in Microsoft Excel application is made, which allows to estimate with sufficient accuracy the losses from the meeting by the complex of the disturbance. A graph of the dependence of the disturbance transition on the radius of the hazardous zone has been constructed, according to which the rational zones of application of various methods of their transition have been determined. The analysis of modeling of geological disturbance transition on equivalent materials was carried out.
-
Date submitted2005-06-08
-
Date accepted2005-07-30
-
Date published2006-01-01
Rational ways of protection of recultivated soils
- Authors:
- Yu. D. Smirnov
An important problem of anthropogenic massifs is the slowdown in the natural formation of vegetation cover on dumps and tailings dumps of mining enterprises, which is explained by the impoverishment of rocks with nutrients. In this regard, of particular importance are the studies aimed at developing economically feasible ways to reduce dust emissions into the atmosphere and restore the biological productivity of disturbed areas, excluding the performance of labor-intensive operations to apply a traditional soil layer during reclamation. Based on the study of properties of various biologically active substances, the use of a new environmentally friendly bioactive foam is proposed, which fulfills the main tasks of biological reclamation: return of disturbed lands to the agricultural fund and fixation of dusty surfaces (soils, dumps, tailings).
-
Date submitted2005-06-15
-
Date accepted2005-07-11
-
Date published2006-01-01
Results of research of dust and gas cloud formation process at the quarry of OOO PG Phosphorit
- Authors:
- O. V. Tikhonova
The article addresses the issue of formation and distribution of dust and gas cloud during the production of mass explosions. The results of studies of the process of formation of dust fractions at the quarry of PG Phosphorit LLC are presented. The research was conducted on the basis of modern physical models corresponding to the mechanism of dust formation during explosive rock blasting by the method of borehole charges at open pits. The article contains an assessment of dust pollution of the environment during the production of blasting operations, methodology for calculating the amount and mass of dust fractions.
-
Date submitted2005-06-20
-
Date accepted2005-07-24
-
Date published2006-01-01
Justification of resource-saving technological schemes of potash strata mining in areas with limited dimensions
- Authors:
- D. V. Urazov
The paper analyzes the methods of mining operations at coal mines and potash mines of Starobinsky deposit. Special attention is paid to the problem of rational extraction of potash ore without leaving large width pillars at the mines of RUE PA Belaruskali, especially relevant at the Krasnoslobodsk mine under construction. The hypothesis of the combined method of underground mining of the 4th sylvinite layer of the Third potash horizon, which consists in mining of the pillar with limited dimensions with turning of the mechanized complex by 180° on the border of the excavation area, is put forward. The known technological schemes with face turning were analyzed and their disadvantages were determined. A new technological scheme of excavation of the 4th layer with extinguishing of the previously left pillar (for protection of preparatory workings after turning) is proposed. The necessary parameters for its application (width of the zone of operational cracks propagation to the edge part of the massif) are calculated, the approximate economic effect from the introduction of the new technological scheme is given.
-
Date submitted2005-06-23
-
Date accepted2005-07-25
-
Date published2006-01-01
Use of GIS-technologies for complex characterization of pro-spatial conditions of land use
- Authors:
- E. N. Bykova
Recently, due to the development of computing capabilities of personal computers and the creation of digital topographic basis, GIS-technologies are increasingly used in solving problems of land management, land assessment and cadastre. The article proposes a model for assessing the spatial state of territories with the use of GIS-technologies on the example of Tosnensky district of the Leningrad region. On the basis of this model the provision of the territory with roads, railroads, power grids, as well as the assessment of agricultural production losses are analyzed.
-
Date submitted2005-06-28
-
Date accepted2005-07-21
-
Date published2006-01-01
Improvement of methodology of underground chambers and voids surveying
- Authors:
- N. M. Voluevich
The study of underground voids and chambers is an important mining and geodetic problem. In the article the classification of methods for solving these problems is proposed in relation to the surveying of chambers in the development of large ore deposits. Two most promising surveying methods are considered: photoplanimetric analysis and laser scanning systems. The essence of these methods is explained, brief descriptions and comparative characteristics of devices, as well as methods of thematic measurements are given.
-
Date submitted2005-06-09
-
Date accepted2005-07-03
-
Date published2006-01-01
Geomechanical substantiation of safe types and parameters of fasteners for fastening of excavations in loose ores
- Authors:
- D. B. Zykov
The experience of installation and operation of various types of supports in loose ores is described. The disadvantages and advantages of these supports are pointed out and the conclusion is made about the possibility of their further use. The methodology and results of field observations of the formation of the rock contour and displacements of the ore mass around the horizontal excavation are given.
-
Date submitted2005-06-19
-
Date accepted2005-07-11
-
Date published2006-01-01
Grapho-analytical method of determination of parameters of rod fastening of excavations on shock-hazardous deposits
- Authors:
- T. F. Kasumov
The method of determining rock support parameters for the conditions of formation of bearing rock vaults in the excavated space is investigated. On the basis of the method the nomographic scheme is constructed and the application area of this nomographic scheme is determined.
-
Date submitted2005-06-08
-
Date accepted2005-07-13
-
Date published2006-01-01
Determination of influence of the dip angle value on the error of azimuth-dip determination
- Authors:
- N. V. Lagai
This work is the basis for further research on the topic. The result of the work are recommendations for carrying out works with the use of a mountain compass. All studies were carried out on a layout assembled specifically for this purpose. The purpose of the work is to establish the relationship between the angle of dip of the formation and the accuracy of determining the azimuth of dip.
-
Date submitted2005-06-11
-
Date accepted2005-07-02
-
Date published2006-01-01
Development of flushing technology when drilling horizontal wells by horizontal directional drilling units
- Authors:
- S. K. Pavlova
The article deals with the issues of trenchless pipe sinking technology, which allows to reconstruct and repair pipelines under permanent highways (railroads and highways). The technology of flushing horizontal wells is developed, parameters of flushing fluid for specific geological conditions are established and parameters of pumping station are determined.
-
Date submitted2005-06-01
-
Date accepted2005-07-02
-
Date published2006-01-01
Research of strength and deformation properties of hydro-hematite ores of Yakovlevskoe deposit
- Authors:
- D. N. Petrov
- D. B. Zykov
The methodology of determination of strength and deformation properties of ores is described. Tabular and graphical results of the conducted studies of ore characteristics of the Yakovlevskoye deposit are presented. The conclusion about the nature of ore fracture under uniaxial compression is made.
-
Date submitted2005-06-02
-
Date accepted2005-07-01
-
Date published2006-01-01
Improvement of technology of construction of the middle tunnel of the metro station "Zvenigorodskaya"
- Authors:
- E. P. Reznikov
The article considers the technology of construction of the middle station tunnel, the technology of erecting the lining of the upper and lower vaults of the deep subway station of column type. Also attention is paid to the improvement of the technology of construction of the middle tunnel by changing the organization of works, which entails a reduction in the duration of construction of this structure.
-
Date submitted2005-06-07
-
Date accepted2005-07-29
-
Date published2006-01-01
Issues of management and economic activity of the forest park zone of St. Petersburg
- Authors:
- M. E. Skachkova
The article presents the problems of management and regulation of economic activity in the forest and park zones of St. Petersburg. Such topical problems as the legal status, economic features of forestry activities, value assessment of forest lands, forest legislation, financing mechanism and issues of redevelopment of urban recreational forests are studied.
-
Date submitted2005-06-27
-
Date accepted2005-07-24
-
Date published2006-01-01
Placement of productive forces in the region taking into account environmental factors
- Authors:
- L. N. Smirnova
The article addresses one of the most important aspects of territorial planning - the location of productive forces in the region. The influence of the results of this type of activity on the development of the country's economy and increasing the investment attractiveness of the region's territory is considered. The author characterizes the process of placing productive forces in the region and reveals its shortcomings associated with insufficient consideration of environment-forming and environmental factors. We give recommendations on the transition to new principles of development and location of productive forces in the region with reasonable consideration of socio-ecological factors, which will contribute to a more harmonious development of the territory with the preservation of natural systems.
-
Date submitted2005-06-23
-
Date accepted2005-07-30
-
Date published2006-01-01
Possibility of application of satellite radio-navigation systems in modern construction
- Authors:
- V. G. Tselovalnikov
Modern construction technologies are developing very quickly. Geodetic support of construction has a significant impact on the quality and timing of building erection and, as a final result, on the economic efficiency of capital investments. The article presents a combined method of using modern satellite technologies and traditional ground methods of axes transfer to the installation horizon. Application of GPS systems allows to solve construction tasks with considerable accuracy and with minimal time expenditures. Attention is also paid to the existing regulatory framework.
-
Date submitted2005-06-06
-
Date accepted2005-07-18
-
Date published2006-01-01
Goals, tasks and content of environmental monitoring
- Authors:
- K. S. Shanina
In order to rationally solve the urgent problem of ensuring stable functioning of ecosystems, it is necessary to clearly outline the goals, objectives and content of the main activity of this issue - environmental monitoring, which is done in the paper. In addition, based on the analysis of the developments of leading scientists, the concept is defined, a general scheme of functioning of goals and objectives is developed, and a detailed classification of types of monitoring is described.
-
Date submitted2005-06-20
-
Date accepted2005-07-29
-
Date published2006-01-01
Selection of power supply scheme of compressor station with gas-turbine drive by reliability criterion
- Authors:
- S. V. Baburin
The typical scheme of power supply of compressor stations with gas turbine drive is described and the problem of improving the reliability of power supply of compressor stations is considered. Different variants of power supply schemes of compressor stations are considered and reliability parameters are calculated for each of them. Recommendations on choosing the optimal scheme of power supply of gas turbine-driven compressor stations with regard to their reliability are given.
-
Date submitted2005-06-21
-
Date accepted2005-07-03
-
Date published2006-01-01
Laws of distribution of concentration of solid particles during the flow of concentrated hydro-mixtures through pipelines
- Authors:
- I. A. Bostan
- N. A. Ekimov
The reserves of non-ferrous metal ores have been depleted in recent years, but metal production is not decreasing, but increasing from year to year. Therefore, the mining industry has to extract and process very large volumes of ores. Complex ores usually contain less than 1% of usable metal. To extract the metal, it is necessary to crush the ore into small particles. In connection with this technology, the amount of fine tailings from beneficiation increases dramatically, as well as the load on tailings hydrotransport. To improve the efficiency of hydraulic conveying, it is necessary to increase the concentration of fine solids in the pulp. The ability of solids to form spatial structures in the slurry is of paramount importance because such hydraulic mixtures can be considered sedimentation resistant. This paper studies the sedimentation stability of tailings from copper ore processing plants.
-
Date submitted2005-06-13
-
Date accepted2005-07-15
-
Date published2006-01-01
Influence of position of the spacer plate on force loading of details of the jaw crusher with complex motion of the movable jaw
- Authors:
- N. S. Golikov
The article presents the results of dynamic analysis of the mechanism of a single-crushing jaw crusher. The relationship between the pusher pitch and reaction forces in the joints is shown. The analytical procedure on which the present study is based is described. It is found that the maximum reaction forces occur when the mechanism reaches one of the extreme positions, and the reaction forces increase with increasing pusher pitch.
-
Date submitted2005-06-04
-
Date accepted2005-07-08
-
Date published2006-01-01
Influence of fine fractions on hydrostructure of solid particles of copper ore dressing tailings
- Authors:
- S. E. Demyanov
Pipeline hydraulic transportation is widely used in underground and open-pit mines, coal preparation plants and external plant utilities to move various rocks. Mixing with water, coal and rocks due to different granulometric and petrographic parameters turn into different types of hydraulic mixtures and are characterized by certain movement patterns inside the pipeline. One of the types of hydraulic mixtures is the tailings of copper ore mining plants. This paper presents the results of research on the particle size distribution and hydraulic dimensions of these hydraulic mixtures, as well as a formula for calculating the particle drag coefficient calculated for the studied hydraulic mixtures.
-
Date submitted2005-06-09
-
Date accepted2005-07-24
-
Date published2006-01-01
Intellectual algorithms of electric drive control of oil and gas pumping units on the basis of neural networks
- Authors:
- A. S. Ivanov
The article considers alternative possibilities of controlling electric drives of oil pumping units with the help of intelligent neural networks, models of traditional and modern sensorless coordinate observer, their comparison is carried out.
-
Date submitted2005-06-01
-
Date accepted2005-07-04
-
Date published2006-01-01
Increase of continuity of power supply systems at territorially dispersed loads
- Authors:
- A. V. Krivenko
The article deals with the methodology of improving the reliability of power supply systems in conditions of geographically dispersed loads. The relevance of this issue is explained by the significant damage to mining enterprises due to power supply failures. The proposed methodology is based on the determination of the optimal number of electrical substations at mining enterprises and the connection of collector bus bars of different substations with the help of automatic operation of the reserve. The optimum number of electrical substations is determined using the method of potential functions. This method allows dividing consumers into groups and determining the center of electrical load in each group. Connection of different collector buses of substations increases the reliability of the power supply system of the enterprise as a whole. Calculation of reliability parameters for two variants of the power supply system, as well as their comparative analysis is carried out.
-
Date submitted2005-06-10
-
Date accepted2005-07-09
-
Date published2006-01-01
Computer modeling of radioisotope meter of density and phase composition of oil flow
- Authors:
- D. S. Levashov
The article deals with a radioisotope instrument for measuring the density and phase composition of flows in main oil pipelines. The instrument uses direct radiation and a gamma radiation beam scattered in space to obtain information on the flow composition (presence of free gas, water, clots and solid impurities) in the entire cross-section of the pipeline. The procedure of modeling such radiation beams by Monte Carlo method is described: the assumptions adopted in modeling and the sequence of operations. Further expected results of the work determination of the spatial distribution of the scattered radiation in the pipeline and the distribution of the registered radiation by energies.
-
Date submitted2005-06-17
-
Date accepted2005-07-01
-
Date published2006-01-01
Conveyors with suspended belt for mining industry at the present stage of their development
- Authors:
- D. E. Lunev
The article considers overhead belt conveyors, their design features and advantages over typical conveyors on roller supports. The scheme of the conveyor with a suspended belt is given, which shows the basic units. The main design limitations of the currently used conveyors with suspended belt are listed, as well as the main directions of improvement of this type of industrial transportation. Some results of works on improvement of their technical-economic and operational characteristics and prospects of using conveyors with suspended belt at the enterprises of mining industry are considered. The scheme of the stand, which serves for research of transverse belt tension on the middle section of the conveyor, is given and the main tasks, which it realizes, are described. The significance of research in this area is argued.
-
Date submitted2005-06-23
-
Date accepted2005-07-07
-
Date published2006-01-01
Relay protection and automation of substations of oilfield sites
- Authors:
- P. A. Rogov
The study analyzes the existing algorithms of automation of substations of oilfield sites and solves the problem of ensuring the first category of power supply of oilfield sites. The algorithm of the automatic reserve input scheme operation for uninterrupted power supply at oilfield sites was developed, based on which the secondary switching circuit of the complete switchgear (CSD) was designed. Modeling of the algorithm was performed by means of logic blocks in Simulink environment of MATLAB system.
-
Date submitted2005-06-02
-
Date accepted2005-07-03
-
Date published2006-01-01
Justification of requirements to ecological safety of diesel engines of transport machines for underground conditions
- Authors:
- K. A. Strebkov
The article presents general requirements to the environmental safety of diesel engines for underground operation conditions. The results of bench tests of diesel engine Mk. 3D6 are given. The tests were carried out jointly with CRDDI. On the basis of the existing methods of measuring and controlling the concentration of harmful emissions in exhaust gases the diesel engine condition is evaluated from the point of view of ecological safety. Dependences of specific concentration of harmful emissions on the diesel engine power were constructed. Possible ways to improve the serial diesel engine to low-toxic modifications are determined.
-
Date submitted2005-06-02
-
Date accepted2005-07-24
-
Date published2006-01-01
Current and voltage curve correction systems
- Authors:
- Yu. A. Sychev
The article deals with the problem of development and implementation of current and voltage curve correction systems in networks of mining and oil and gas processing enterprises using active filters based on IGBT transistors. The estimation of existing schemes of connection of active filters is given, their advantages and disadvantages are emphasized, the basic principles and features of their work are considered. The structure and control algorithm of the sequential active filter providing predictable compensation of harmonic components are given. The relations for its realization using the method of symmetric components and the theory of rotating coordinate systems are obtained.
-
Date submitted2005-06-03
-
Date accepted2005-07-21
-
Date published2006-01-01
Increase of reliability of systems of accounting and control of energy consumption at mining enterprises
- Authors:
- E. V. Tatarenkov
The problem of increasing the reliability of systems of control and accounting of electric energy consumption at the enterprises of mining industry, the method of increasing the reliability by redundancy method with further replacement of failed elements are considered. An example of practical calculation of reliability with loaded duplication and restoration of elements of the system of control and accounting of electric energy consumption is given, as a result of which the expediency of application of the proposed method is proved.
-
Date submitted2005-06-09
-
Date accepted2005-07-01
-
Date published2006-01-01
Information-analytical system of control and formation of gas-transport flows of main gas pipelines
- Authors:
- N. Yu. Tropinova
In dispatching activity, along with the basic function of process control, a significant place is occupied by decision-making in real-time control of gas flows in the main gas pipeline. At present, decision-making depends on the qualification of dispatch personnel, as there are no software support tools yet. However, there are ways of solving such problems with the involvement of elements of the theory of fuzzy sets (TFS) in combination with the theory of planning of experiment (TPE). The task of the dispatcher is to process the received information and form transportation flows taking into account seasonal, daily changes and economic efficiency of the system. To solve this task, it is necessary to analyze the state of flows at all sections throughout the pipeline and to carry out their redistribution. The purpose of this article is to identify the factors that form the basis of the information control system (ICS) in the formation of gas transportation flows of main gas pipelines (MG).
-
Date submitted2005-06-06
-
Date accepted2005-07-04
-
Date published2006-01-01
Control of energy quality parameters in networks with nonlinear load
- Authors:
- S. Yu. Tyagushev
- V. V. Sobolev
This paper estimates the quality parameters of electrical energy in the electrical network of the St. Petersburg State Mining Institute. Experimental studies and computer modeling allowed to establish the influence of non-sinusoidal currents of PC power units on the degree of voltage distortion and overestimation of neutral current.
-
Date submitted2005-06-04
-
Date accepted2005-07-13
-
Date published2006-01-01
Extreme control system of converter gas flow system
- Authors:
- M. K. Anikin
The possibilities of using the extreme control system as applied to the gas-turbine unit of a vertical converter are investigated. The control problem and the principles of formation of criterion are proposed. The algorithm of extremum search is substantiated. The estimation of its speed is given. The method of parameter selection is described. The effect from application of the extremum control system is estimated.
-
Date submitted2005-06-30
-
Date accepted2005-07-25
-
Date published2006-01-01
Segregation of fine-grained material during gravity concentration
- Authors:
- A. M. Vasilev
A new approach and devices for studying the segregation process in gravity concentration have been proposed. By means of this device interesting facts were obtained, proving the work of this device and showing some peculiarities and laws of this phenomenon.
-
Date submitted2005-06-16
-
Date accepted2005-07-25
-
Date published2006-01-01
Kinetics of iron (II) sorption by ferromanganese nodules
- Authors:
- I. T. Zhadovskii
Kinetic characteristics of iron (II) sorption by ferromanganese nodules were determined: reaction rate constants at different temperatures, apparent activation energy of the process.
-
Date submitted2005-06-20
-
Date accepted2005-07-21
-
Date published2006-01-01
Study of composition and choice of method of pelletization of powdered iron ore
- Authors:
- L. A. Lenev
The mined ore cannot be used in the metallurgical process without preliminary preparation. The main preparatory operation is ore size preparation. Small ore fractions (-5+0 mm) are carried out of the furnace during smelting and smelting becomes inefficient. Therefore, it is necessary to exclude fine ore grades and direct them to roasting. In this paper, loose iron ores were investigated and the feasibility of roasting this product was determined. The initial moisture content of the dough, the content of different grades of coarseness and elemental composition were studied by spectral and chemical method.
-
Date submitted2005-06-24
-
Date accepted2005-07-29
-
Date published2006-01-01
Thermodynamic study of extraction of cerium nitrate by oleic acid
- Authors:
- G. S. Roshchin
The extraction of cerium nitrate from aqueous solutions by a solution of oleic acid in o-xylene was studied. The dependence of the distribution coefficient of cerium nitrate on the water-hydrogen index and on the volume of the organic phase was revealed, while the ratio between the concentrations of oleic acid and cerium remained constant. The solvation number at ex-traction of cerium nitrate by oleic acid was determined. The mechanism of the reaction was established. The equilibrium constant and Gibbs energy of extraction were calculated.
-
Date submitted2005-06-28
-
Date accepted2005-07-19
-
Date published2006-01-01
Experimental-industrial tests of lime hydrochemical treatment of nepheline sludge from alumina production
- Authors:
- A. V. Starshinov
The necessity of additional extraction of alkali from nepheline sludge and increase of its activity is shown. The chemistry of interaction of alkaline phases of nepheline sludge with lime milk and carbon dioxide is given. On the basis of experimental studies, the technological mode of extraction of alkali from nepheline sludge is substantiated. The changes made in the apparatus-technological scheme necessary for the process are presented. Experimental-industrial results of application of lime treatment are given.
-
Date submitted2005-06-08
-
Date accepted2005-07-11
-
Date published2006-01-01
Isotherm of exchange of metal and sodium cations on ferromanganese nodules
- Authors:
- A. A. Chistyakov
The isotherms of ion exchange of metal cations (Sr 2+ , Ni 2+ ) and Na + on iron-manganese nodules were obtained. The ion exchange is described by an equation similar to the Langmuir isotherm. The values of the limiting sorption and apparent ion exchange constant were calculated. The effective radii of sorbed strontium and nickel cations were determined.
-
Date submitted2005-06-15
-
Date accepted2005-07-24
-
Date published2006-01-01
Strategic analysis of diversification of gas company
- Authors:
- N. P. Galaida
The article focuses on the strategic analysis of diversification of a gas company (on the example of the gas distribution organization Peterburgregregiongaz). This topic is very relevant, as it allows solving many problems of the organization. The main directions of diversification of the company are shown: diversification of sales markets, diversification of suppliers, complex diversification of the company in order to create a single energy holding structure. The scheme of the analysis based on the methods of strategic management is presented, which implies the identification of possible directions of diversification. The results of the first stage of research conducted according to this scheme are given, namely, conducting a comprehensive SWOT-analysis, the main trends existing in the market as a whole, as well as in the company itself are revealed.
-
Date submitted2005-06-22
-
Date accepted2005-07-29
-
Date published2006-01-01
Justification of the methodology of determination of optimal normative payments and optimal strategies of the enterprise on environmental protection
- Authors:
- N. V. Gurova
The methodology of determining the optimal standards of payments for environmental pollution based on the experience of foreign countries and taking into account the peculiarities of the Russian environmental policy is developed. Strategies of the enterprise on environmental protection activity are developed and optimal ones for the mining and metallurgical enterprise Magnitogorsk Iron and Steel Works OJSC are determined.
-
Date submitted2005-06-05
-
Date accepted2005-07-11
-
Date published2006-01-01
Criterion and indicators of estimation of economic, social and ecological stability of system
- Authors:
- N. G. Guseva
The article deals with the development of an integrated model of the economic system development process, reflecting all aspects of its functioning. It is proposed to assess the sustainable development of the system by the integral coefficient of sustainable development, which is calculated on the basis of the coefficients of economic, social and environmental sustainability. The development variant, at which the maximum value of the integral coefficient of sustainability is achieved, is the most stable (when the value of the coefficients of economic, social and environmental sustainability is greater than one). Thus, the criterion of system stability can be formulated as maximization of the integral stability coefficient.
-
Date submitted2005-06-16
-
Date accepted2005-07-30
-
Date published2006-01-01
Economic efficiency of diversification of metallurgical production of mining and metallurgical company
- Authors:
- A. M. Ivanov
The estimation of efficiency of metallurgical production diversification on the basis of economic-mathematical model of synchronous investment and production planning is considered, restrictions on the parameters of financial and economic sustainability are imposed. As an indicator of financial and economic sustainability the indicator of gross value added growth is accepted.
-
Date submitted2005-06-07
-
Date accepted2005-07-25
-
Date published2006-01-01
Methodology and practice of option accounting at justification of investment project Kovykta-China-South Korea
- Authors:
- D. A. Ilinskii
The problems of development of the regions of Eastern Siberia and the Far East of Russia are considered. The state of the region's resource base is analyzed. The state of the gas market in the Asia-Pacific Region (APR) countries and their projected demand for Russian gas are analyzed. A variant of the export-oriented gas pipeline construction route from the eastern regions of Russia to the APR countries is proposed. The problem of choosing the optimal capacity of the gas pipeline using the theory of option pricing and the criterion of net present value of the project is solved.
-
Date submitted2005-06-14
-
Date accepted2005-07-04
-
Date published2006-01-01
Preliminary assessment of economic potential of the North-West region of Russia from the point of view of Kyoto Protocol mechanisms
- Authors:
- A. A. Lavygin
The article presents a multivariate model for preliminary analysis of opportunities associated with the use of economic mechanisms of the Kyoto Protocol. The article considers economic mechanisms of the Kyoto Protocol, levels of their implementation, composition of greenhouse gas emissions in the main sectors of the Russian economy, main options for reducing greenhouse gas emissions in Russia. A preliminary assessment of the total capacity of underground reservoirs potentially suitable for storing greenhouse gases at oil and gas fields located in the northwestern region of Russia is given.
-
Date submitted2005-06-20
-
Date accepted2005-07-05
-
Date published2006-01-01
Horizontal drilling is one of the priority directions of Surgutneftegaz innovation development
- Authors:
- E. I. Sapozhnikova
Priority directions of innovative development of Surgutnefte-gaz are shown. Horizontal drilling is chosen as the direction under study. The article presents the main areas of implementation of this technology for enhanced oil recovery at the company's fields. The data on the growth of horizontal drilling and additional oil production for the period from 1991 to 2004 were analyzed, as well as the dynamics of the cost of construction of one horizontal well for the period from 1992 to 2004 was traced and evaluated. As a result, the total economic effect from the introduction of this technology for 2004 was calculated and presented in the form of some economic indicators.
-
Date submitted2005-06-27
-
Date accepted2005-07-12
-
Date published2006-01-01
Prospects of application of mining equipment of domestic production at Kirov mine of OAO Apatit
- Authors:
- A. V. Skvortsov
The prospects of using domestic (cheaper) drilling equipment at the Kirov mine of Apatit JSC, the possibility of sinking small cross-sectional excavations, organization of work through multi-stop maintenance of equipment, which has a great social effect and will allow to load domestic mining machinery plants, as well as create new jobs in related industries are considered.
-
Date submitted2005-06-17
-
Date accepted2005-07-13
-
Date published2006-01-01
The subtleties of persuasion
- Authors:
- K. A. Burtsev
After health issues, adults are most interested in knowing how to understand people, how to succeed in society, how to make people feel comfortable, and how to persuade them to your way of thinking. The article is devoted to ways of communication that help to make the listener feel at ease, to convince him or her of something.
-
Date submitted2005-06-30
-
Date accepted2005-07-30
-
Date published2006-01-01
About one algorithm of calculation of stressed state of salt reservoirs roof taking into account optimal choice of technological schemes parameters
Проектирование и строительство шахт, горных выработок и возведение подземных сооружений на большой глубине в различных горно-геологических условиях - сложные процессы, связанные с анализом параметров напряженного и деформированного состояния в выработках. Существует множество различных методов определения геомеханических параметров. Основными методами определения напряженного и деформированного состояния являются геологоразведка, инженерная физика, экспериментальные исследования, механика сплошной среды.
-
Date submitted2005-06-11
-
Date accepted2005-07-19
-
Date published2006-01-01
Oil economy of Russia: current state and prospects for the future
- Authors:
- L. P. Kardaenko
The huge importance of the oil industry for Russia is undeniable. But today the industry is not functioning at full capacity. After a dramatic decline in oil production in the first 5 years of perestroika (since the mid-1990s), it has decreased by 300mn tons per year. The reason for the decline in production is the lack of investment in production and exploration projects. The purpose of this article is to draw attention to the tax and legal aspects that could be used to make Russian oil projects more attractive for investment by foreign companies. But today it is still impossible to foresee whether a legal basis for an oil financial system can be created in Russia under the current conditions.
-
Date submitted2005-06-25
-
Date accepted2005-07-05
-
Date published2006-01-01
Life and creativity of A.M. Zhuravsky
- Authors:
- V. V. Karpenko
- K. V. Musova
The article describes the main periods of life and creativity of Professor A.M. Zhuravsky, who headed the Department of Higher Mathematics for more than 30 years. His contribution to the organization of methodical and scientific activities at the department and the defense potential of the country is noted.
-
Date submitted2005-06-30
-
Date accepted2005-07-29
-
Date published2006-01-01
Symbolism of the cross in archaic and Christian cultures
- Authors:
- R. V. Korchenkov
- I. V. Trofimova
The issues of symbolism of the cross as a universal sacred symbol are considered. Some of its varieties, which emerged both in the pre-Christian era and after the spread of Christianity, are briefly presented.
-
Date submitted2005-06-13
-
Date accepted2005-07-10
-
Date published2006-01-01
Logocentrism of Russian mentality: to the question of word meaning in Russian culture
- Authors:
- A. G. Kostina
The thesis about the centrality and authority of the concept "word" in the mental space of Russian culture is put forward. In the Russian consciousness the word is understood not only as a semiotic symbol, but as an independent entity, valuable in itself and possessing creative "objectifying" potential. This attitude to the word is expressed not only in theory, i.e., in the observations of philosophers, theologians, and linguists, not only in the poetic practice of word artists, but also in everyday consciousness, in everyday conscious or unconscious reflexion.
-
Date submitted2005-06-05
-
Date accepted2005-07-21
-
Date published2006-01-01
Decomposition and technology of sparse matrixes in problems of research of complex systems
- Authors:
- A. E. Kochura
- A. I. Mikheev
- B. N. Kutsenko
Diakoptic approaches to modeling and calculations of complex systems are considered. Such approaches envisage the construction of systematic procedures for de-composition of the system under study into a combination of indecomposable subsystems and effective recomposition of partial solutions of subsystems, taking into account the links between them, into a global solution of the metasystem.
-
Date submitted2005-06-17
-
Date accepted2005-07-16
-
Date published2006-01-01
A master of judicial eloquence A.F. Koni
- Authors:
- V. V. Kudryashova
- M. A. Petrov
The article is devoted to the study of the peculiarities of Russian judicial eloquence. The object of attention is the activity of the outstanding Russian lawyer A.F.Koni. The essence of A.F.Koni's oratorical skill is investigated in the context of his judicial practice. The contribution of A.F.Koni to the creation of the school of Russian judicial eloquence is emphasized.
-
Date submitted2005-06-10
-
Date accepted2005-07-18
-
Date published2006-01-01
Ethics of catastrophes
- Authors:
- Yu. D. Larina
The study of special moral experiences of people arising as a result of emergencies associated with accidents and disasters is an urgent and very complex problem of ethics. Virtually everyone who has experienced the force of the impact of the elements, man-made accidents or has been in close contact with the victims of disasters, comprehends the tragedy in the categories of good and evil, the proper and the existent, and the behavior of people in extreme situations is evaluated as heroic, courageous, cowardly or cowardly. In the most general form, all phenomena of moral consciousness, behavior and activity of people during and after the catastrophe can be covered by such a concept as "the morality of the catastrophe".
-
Date submitted2005-06-27
-
Date accepted2005-07-08
-
Date published2006-01-01
Electric methods for identification of diamonds and jewelry stones
A comprehensive analysis of modern methods used for diamond identification has been carried out. It is shown that high thermal conductivity cannot unambiguously testify to the authenticity of a diamond, since synthetic imitations of silicon carbide have recently appeared. It is shown that electrical methods of gemstone diagnostics are promising but not yet sufficiently developed. A set of innovative electrocalcium methods for diamond identification is proposed. Techniques for measuring high resistivity, dielectric permittivity and surface potentials, which can be used in the procedure of diamond identification, are developed. An operational model has been tested in the study of new and traditional dielectric materials. The possibility of detecting differences in electrical and physical properties of externally identical materials using this method is shown.
-
Date submitted2005-06-15
-
Date accepted2005-07-17
-
Date published2006-01-01
Woman-manager in modern Russia
- Authors:
- B. Ya. Pukshanskii
- E. A. Kanbekova
The article focuses on the problem of the position of a woman leader in modern Russia. It is an urgent topic in our time. The article describes the current situation in Russian and world business. The reasons for unequal treatment of women in business are considered, socio-psychological characteristics of women entrepreneurs are highlighted, examples of various studies are given.The aim of the paper is to convince readers that in business and politics the main role should be played by knowledge, experience and professionalism regardless of gender. Only in this way will we achieve a more civilized level of our economy.
-
Date submitted2005-06-22
-
Date accepted2005-07-30
-
Date published2006-01-01
Role of physical culture in maintenance and restoration of working capacity of mining engineers
- Authors:
- G. V. Rudenko
- S. V. Bakhvalova
The data show the undoubted influence of climatic factor on such important indirect indicators of organism condition as labor productivity and injury frequency. Unfavorable impact of production factors increases the possibility of development of colds, pneumoconiosis, dust bronchitis and vibration disease among miners [3]. Thus, the effect of summation of negative environmental factors (geographical, social, etc.) and technogenic factors (working conditions) leads to negative consequences, especially manifested in the conditions of development and exploration of subsoil resources of the North. Physical culture, in this case, is one of the most important means of restoring health and ensuring normal working capacity and life activity of mining engineers.
-
Date submitted2005-06-04
-
Date accepted2005-07-09
-
Date published2006-01-01
Experience of application of small angle X-ray scattering for detection of nano-homogeneities in irizing labrador crystals
- Authors:
- A. P. Simakov
Irizing and non-irizing labrador have been studied by small-angle X-ray scattering for a wavelength of 1.51angstrom (Cu-alpha). Plates of 0.1-0.2 mm thickness cut perpendicular to the c crystallographic axis were investigated. For the experiment, an X-ray setup with a U-shaped Kratky collimator was used. Two types of scattering were detected for the first time: anisotropic and isotropic. Anisotropic scattering is characteristic only for irizing labradors. It is observed at angles of 1-5 mrad and decreases with increasing scattering angle. The isotropic scattering has a maximum at an angle of 8 mrad, the position of which does not depend on the irization of the sample. Anisotropic scattering is presumably associated with defects in the structure of irizing crystals, characteristic sizes of which are 500-1500 angstroms. Isotropic scattering is apparently determined by structural elements with linear dimensions of 150-180 Å.
-
Date submitted2005-06-15
-
Date accepted2005-07-14
-
Date published2006-01-01
Determination of heat losses during steam injection into oil reservoir
- Authors:
- N. N. Smirnova
- N. O. Iimu
One of the methods of oil production intensification is water vapor injection into oil reservoirs. The efficiency of this process generally depends on the amount of useful heat utilized in the oil reservoir. One of the most important parameters of thermocouple treatment of the reservoir is the amount of heat di rectly supplied to the oil reservoir. For its determination it is necessary to know the heat energy losses in surface communications and oil wells, as well as losses associated with heat exchange processes in the oil reservoir and surrounding rocks. High heterogeneity of oil reservoirs complicates the use of continuous steam injection into oil reservoirs. The time required to warm up the reservoir to a given temperature is a determining factor for theoretical analysis of heat losses due to the unsteady heat exchange process in such conditions. The paper presents the basic principles of the heat loss estimation method, as well as the results obtained in determining the relationship between the time required to warm up the oil reservoir to a given temperature and the temperature of steam.
-
Date submitted2005-06-30
-
Date accepted2005-07-13
-
Date published2006-01-01
Nanostructural regulation and interrelation of water repellent and protective properties of coatings on steel
The data on corrosion of Mk.3 steel with different coatings in atmospheric air containing potassium chloride, hydrogen chloride and sulfur dioxide impurities below the maximum permissible concentrations have been analyzed. A linear dependence between hydrophobic behavior and protective properties of coatings applied on steel was revealed both for standard compositions and for compositions with nanostructured filler (1 wt. %) obtained by hydride solid-phase synthesis.
-
Date submitted2005-06-17
-
Date accepted2005-07-21
-
Date published2006-01-01
Symbolic character of communication of military servicemen
- Authors:
- E. I. Chirkova
The article is dedicated to the role of symbols in army life, which help cadets feel confident in a professional communicative situation, direct their efforts to a certain character of communication, serve as a means of education.