Vol 159 No 2
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Date submitted2003-07-18
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Date accepted2003-08-06
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Date published2004-02-01
Assessment of filtration-volume properties of the reservoir in connection with epigenetic changes
- Authors:
- I. A. Gubin
The reflection of epigenetic processes in the petrophysical equations used in assessing the filtration-volume properties of reservoir rocks was revealed, and a mechanism for taking these processes into account, which increases the reliability of hydrocarbon field reserves assessment was proposed.
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Date submitted2003-07-11
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Date accepted2003-08-01
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Date published2004-02-01
Improving the quality of well casing in the oil fields of the Republic of Tatarstan
- Authors:
- T. R. Kateev
Provision of high quality of well cementing is a multifactorial problem, and the solution to this problem should be approached comprehensively. During the analysis and generalization of actual geological, geophysical and technical-technological data on the oil fields of the Republic of Tatarstan the main reasons of low-quality cementing of wells were revealed: - non-observance of design solutions - violation of technological operations; - absence or destruction of cement behind the production string; - absence of chemical reagents for cement slurry; - low provision of technological casing equipment. In order to improve the quality of well casing and to fully or partially eliminate the above drawbacks, the technology of forming impermeable cement screen in the wellbore area during construction and repair of wells and technical means (TS) for external casing string tooling have been developed with the participation of the author of the article. As a result of applying the technology and using TC at the oil fields of the Republic of Tatarstan significant economic and technological effects were achieved.
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Date submitted2003-07-03
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Date accepted2003-08-17
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Date published2004-02-01
Peculiarities of chromium, nickel, copper, and noble metal distribution in soils of Ganinsky area (Burakovsky stratified massif of Karelia)
- Authors:
- Yu. V. Makarova
The data of the prospecting-geochemical surveys carried out in 2000 in the Ganinsky area of the Burakovsky-Aganozersky massif of Karelia served as the material for the present work. The purpose of the surveys was to develop methods of geochemical prospecting for platinum-metal mineralization using thermo-magnetic geochemical and metal-organic soil forms methods and to identify local anomalies with good prospects for detecting platinum-metal mineralization. As a result of testing various options for processing of prospecting and geochemical data, it was proved that the best result gives the application of the methodology aimed at the fullest possible account of the varying landscape conditions. Two promising areas are identified, one of which is predicted to have low-sulfide platinum-metal mineralization, and the other has maximum concentrations of chromium, nickel and copper in soils.
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Date submitted2003-07-12
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Date accepted2003-08-22
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Date published2004-02-01
Selection and justification of acid compositions for bottomhole zone cleaning
- Authors:
- I. Kh. Mingalimov
The article studies the results of research in acid action on carbonate rocks. Complex solutions with low reacting speed are designed. These complexes will intensify fluid influx. Efficiency of these solutions exceeds efficiency of the basic acid solution.
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Date submitted2003-07-18
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Date accepted2003-08-27
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Date published2004-02-01
Analysis of past geochemical materials of the Veduginskoye ore field and assessment of the possibility of their use for predictive modeling
- Authors:
- L. Yu. Nikonova
The problems of comparison of secondary geochemical halos obtained by different time surveys in the Veduginskaya gold-bearing area are considered. The technique of comparison and alignment of the initial data is proposed, the nature of element distribution and their correlation relations are revealed, and the formulas of correction factors are defined. Comparable secondary geochemical fields suitable for further forecasting were obtained.
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Date submitted2003-07-23
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Date accepted2003-08-07
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Date published2004-02-01
Geodynamics and hydrogeochemistry of natural water systems of Krasnoleninsk oil and gas bearing area
- Authors:
- T. Yu. Nikheima
The data on the location of the study area (western part of the West Siberian megabasin), hydrogeological stratification with separation of three overlapping basins - Cenozoic, Mesozoic, and Paleozoic. The issues of paleohydrogeological reconstructions with separation of piezomaximum and piezominimum zones are considered. It is shown that as a result of the evolutionary development of the Mesozoic hydrogeological basin, the studied area has turned into a regional piezomaximum zone due to the thick strata of clayey Neocomian deposits and is located within the development of infiltration, elision lithostatic and elision geodynamic water pressure systems. Groundwater has different ion-salt composition. The processes of elision water exchange, actively occurring in the study area, are closely connected with oil-and-gas formation and oil-and-gas accumulation.
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Date submitted2003-07-03
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Date accepted2003-08-16
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Date published2004-02-01
Engineering and geological conditions of the Podolsk District of the Moscow Region and the project of engineering and geological studies for the use of underground space under the main house of the state museum-estate Ostafievo – “Russian Parnassus”
- Authors:
- I. V. Osika
The article considers the engineering and geological conditions of the territory of the state museum-estate Ostafievo - "Russian Parnassus". A brief historical note on the formation of the estate is given. The brief characteristic of the research object is given. The scheme of the underground floor construction technological process is described. The result of this work should be a project of engineering-geological surveys, which will justify the development of the project of using the underground space under the main house of the state museum-estate Ostafyevo - "Russian Parnassus".
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Date submitted2003-07-05
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Date accepted2003-08-29
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Date published2004-02-01
Assessment of the technical condition of main gas pipelines based on physical and mathematical modeling
- Authors:
- N. V. Teltevskaya
The object of this study is the steel main gas pipelines of the Lentransgaz company in the Leningrad Region. In the process of operation of gas pipelines is very important to control their condition. As a result of theoretical research, a physical and mathematical model of the geoelectric system gas pipeline-ground, which describes the distribution of cathodic protection leakage current density in the near-tube space based on the solution of the inverse problem of electrometry, is developed. When solving the inverse problem, the leakage currents are determined on the basis of ground measurements data, the values of which characterize the pipeline condition to a sufficiently accurate extent.
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Date submitted2003-07-17
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Date accepted2003-08-07
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Date published2004-02-01
Computer calculation of diamond cutting tool parameters
- Authors:
- E. B. Chorpita
The main points of creating a computer program for calculating the main parameters of diamond cutting tools are considered. Creation of the computer program makes it possible to consider practically all possible construction variants and all the variety of mining and geological conditions when designing a diamond drilling tool. With traditional design the tool designer has an opportunity to consider only two or three design versions at the design stage. This does not allow creating a tool optimally suited to the conditions of the work. It is possible to solve this problem and create an effective diamond drilling tool only with the help of computer-aided design.
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Date submitted2003-07-06
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Date accepted2003-08-06
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Date published2004-02-01
Possibilities of using natural waters of different chemical types to maintain reservoir pressure in Siberian platform conditions (on the example of the Yurubchenskoye field)
- Authors:
- I. I. Yurchik
The hydrogeochemical features of the structure of the Yurubcheno-Tokhomsky license area are considered. The results of numerical physical and chemical modeling of the behavior of different chemical types of water during injection into productive formations are shown. Recommendations on the use of natural waters of different chemical types for reservoir pressure maintenance in the conditions of the Siberian platform on the example of the Yurubchenskoye field are formulated.
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Date submitted2003-07-11
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Date accepted2003-08-09
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Date published2004-02-01
Specific features of rock massif deformation in the support pressure zone
- Authors:
- K. I. Batin
The manifestations of rock pressure are evaluated according to the results of rock deformation studies in the workings of faces No. 905, 909, 910 in the Polysaevsky-1 formation. The results of measurements of vertical convergence between the ground reapers and anchor rods in the roof of the diagonal furnaces of faces No. 909 and 910 allow us to talk about the uncharacteristic shift of the rock massif. This can be confirmed by the results of the previously measured stresses in the coal massif, carried out with high-modulus photoelastic sensors, installed in the ventilation drift of the working face No. 905.
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Date submitted2003-07-04
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Date accepted2003-08-27
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Date published2004-02-01
Formation of temporarily non-working side of the cut
- Authors:
- V. O. Vasilevskii
Principle schemes of forming steep temporarily non-working wall (TNW) of the section differ by the order of formation of steep TNW, the angle of the working wall slope by stages of its development, the volume of overburden and mining operations in each stage. Each scheme corresponds to certain technologies of mining works, which determine possible terms of TNW formation. The use of these schemes in pure form is not always effective. Recommended to use the scheme of formation of steep TNW of section should provide as much as possible uniform mode of mining works on periods of formation of a wall. In this case, a constant amount of mining and transport equipment will be required for the whole period of steep TNW formation. The way out of this situation can be found by using combined schemes of steep TNW formation, which are a combination of the above-mentioned.
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Date submitted2003-07-18
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Date accepted2003-08-16
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Date published2004-02-01
Complex action reagent for oil fields
- Authors:
- A. A. Elpidinskii
High efficiency of non-ionic surfactant (polynol) based on alkylphenol-formaldehyde resins as a multifunctional oilfield reagent is shown. The results of its tests on various natural oil emulsions, on inhibition of paraffin deposits, on corrosion inhibition, on reduction of viscosity of oil systems are presented. The use of the reagent as a wax deposition inhibitor prevents the formation of persistent oil emulsions. In all tests the effectiveness of polynol was compared with the effectiveness of known reagents.
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Date submitted2003-07-17
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Date accepted2003-08-29
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Date published2004-02-01
Study of inorganic salt deposition processes and selection of inhibitors to combat this phenomenon
- Authors:
- V. A. Kapitonov
Deposition of inorganic salts in the reservoir, downhole pumping equipment, oilfield communications and oil treatment equipment remains one of the important problems of oil production. This phenomenon is associated with changes in the salt composition of produced water in the field as well as changes in the thermal and pressure conditions in the near-wellbore formation zone and process equipment. Ways of quantitative comparison of the protective effect of inhibitors on the deposition of salts are considered.
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Date submitted2003-07-02
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Date accepted2003-08-08
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Date published2004-02-01
Optimization of technological characteristics of milled peat excavation
- Authors:
- T. B. Kulikova
A possibility to improve technological characteristics of milled peat excavation is offered on the basis of experimental research by means of production cycle reduction owing to minimizing milled peat layers and peat drying in thin layers. The mechanism of moisture transfers in layers and its influence on the process of air drying is considered. Thanks to this improvement, the number of cycles in significantly increased, dry weather periods are used better. As the result, the main technological index of milled peat production — season crop - in increased.
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Date submitted2003-07-19
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Date accepted2003-08-13
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Date published2004-02-01
Development of alluvial deposits by means of small-scale mechanization
- Authors:
- D. S. Opryshko
Due to the long-term and intensive development of the richest deposits with favorable operating conditions, the extraction of mineral resources is increasingly shifting to areas with harsh climatic and mining and geological conditions, where there is no infrastructure of any kind. The balance reserves of many deposits are often insufficient for their profitable industrial development. Therefore, the possibility of development of placer deposits by means of small-scale mechanization is considered. An analytical model is worked out, allowing to carry out the choice of the mining method, technologies and methods of conducting works are offered. High economic efficiency of application of the developed equipment complexes in real conditions is demonstrated.
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Date submitted2003-07-26
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Date accepted2003-08-07
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Date published2004-02-01
Development of environmental protection measures to prevent the negative impact of Mikhailovsky MMP's eastern reservoir on the agro-landscape
- Authors:
- I. K. Ponurova
One of the pressing problems of our time is the pollution of the environment in the mining and industrial areas. The analysis and assessment of the negative impact of Mikhailovsky GOK on the atmosphere and land resources has been carried out. In connection with the threatening situation in this area, it is necessary to ensure the reduction of environmental hazards, the source of which is the activity of Mikhailovsky MMP, based on the assessment of environmental and economic damage caused to the components of the natural environment, while reducing the cost of prevention and elimination of environmentally adverse impacts.
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Date submitted2003-07-13
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Date accepted2003-08-29
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Date published2004-02-01
Development of engineering methods for the protection of shallow waters and flooded areas
- Authors:
- M. V. Prokhorenko
The problems of returning shallow waters and flooded areas for further use are considered. Methods of engineering protection of these territories, including hydraulic excavation development of quarries in the floodplains of rivers and filling of protective dams, reclamation of territories to non-floodable levels, restoration of small river regimes, construction of fishery complexes are developed. Specially developed technologies and devices were proposed to increase the efficiency of works. The environmental safety of the production was assessed.
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Date submitted2003-07-17
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Date accepted2003-08-04
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Date published2004-02-01
Impact of atmospheric emissions from the Kursk nuclear power plant on forest ecosystems
- Authors:
- N. S. Pchelina
The methodology developed to assess the state of forest ecosystems in the zone of influence of atmospheric emissions from metallurgical enterprises is applied to assess the impact of the Kursk nuclear power plant. It is shown that this NPP is a relatively clean facility, the impact of which on the environment is minimal.
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Date submitted2003-07-17
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Date accepted2003-08-20
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Date published2004-02-01
The possibility of using gelpora for explosive preparation of rock mass in the conditions of construction material production quarries
- Authors:
- S. Yu. Semenyak
The results of comparative full-scale tests of industrial explosives: gelpor GP-2, grammonite 79/21 and ammonite No. 6 ZhV are presented. The comparison was carried out according to the parameters of the air shock wave formed during the explosion of similar mass of concentrated charges of gelpor, grammonite and ammonite.
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Date submitted2003-07-03
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Date accepted2003-08-27
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Date published2004-02-01
Improvement of oil and gas field development technologies and systems
- Authors:
- V. V. Feller
A study of formation fluid inflow into the well has been carried out and the strong influence of formation anisotropy has been revealed. The method of calculation of horizontal well drilling along arc and linear profiles, tested at Yaraktinskoye field of Irkutsk region, is described.
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Date submitted2003-07-22
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Date accepted2003-08-17
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Date published2004-02-01
Technique for evaluating the tightness of hydraulic props of mechanized roof supports
- Authors:
- K. G. Buyalich
The technique of an estimation of tightness of hydraulic props of mechanical supports which is reduced to the decision of two basic problems is offered: definition of a gap between the piston and the cylinder in a place of a seal and revealing of character of deformation of a seal in this gap under the influence of pressure of a working liquid. The character of seal operation and determination of gaps are established by means of the finite element method as a result of solving the model of joint interaction of seal, cylinder, piston, rod, gland bush and working fluid taking into account material properties and real working conditions of the hydraulic prop.
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Date submitted2003-07-13
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Date accepted2003-08-03
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Date published2004-02-01
Asynchronous frequency-controlled drive of a mine electric locomotive
- Authors:
- D. V. Volkov
The results of asynchronous drive development for mine electric locomotive are presented: selection and construction of traction motors characteristics, a variant of electric drive power part and control system structure. Application of individual frequency converters for each motor is justified. Drive control system forms mechanical characteristic, soft in the area of medium and increased loads with limitation of maximum traction force and hard at low and negative loads with automatic speed limitation and load equalization between traction motors. Circuit diagrams of power converters and the control system using a programmable microcontroller have been developed. Mathematical modeling of the drive using MATLAB system was performed, the results of which confirm the performance of the proposed control system structure.
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Date submitted2003-07-28
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Date accepted2003-08-22
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Date published2004-02-01
Development of a microdiffusion burner design for the combustion of water-coal suspensions in coal mine heating systems
- Authors:
- V. A. Voronov
Water-coal slurries (WCS) are not much inferior to such fuels as oil, fuel oil and gas in their energy characteristics. Their combustion is characterized by high environmental safety, low ash content and high combustion efficiency. For efficient combustion of such fuels special requirements should be imposed on burner devices. Thus, the design of these devices should provide supply not only of fuel itself, but also special channels for supplying air as an oxidizer and atomizer and gas for ignition and maintaining combustion in the initial period. The calculation of basic values, describing the process of fuel combustion, the basic geometrical parameters for burner design and justification of design characteristics of a microdiffusion gas burner for WVS combustion are given.
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Date submitted2003-07-10
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Date accepted2003-08-13
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Date published2004-02-01
The problem of increasing the clearances in the bed frames of the working stands of rolling mills
- Authors:
- A. V. Kokovikhin
Improvement of production efficiency and quality of rolled products is directly related to the reliability of parts and components of the main equipment. One of the problems, typical for the bed frames of rolling mills, is the wear of the contact surfaces of roll pads and the inner surface of the beds. Wear of surfaces leads to increased clearances, which, in its turn, leads to various violations in the adjustment of work stands: misalignment of work rolls axes, misalignment of work and support rolls axes, the combined effect of misalignment of work rolls axes and misalignment of work and support rolls axes. These effects, acting in combination, lead to the emergence of axial forces on the rolls, up to 20% of the rolling force. As a result of these forces, failure of roller bearings is observed. There are various methods to control gaps occurring in the system "roll cushion - bed frame", both technological and constructive.
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Date submitted2003-07-27
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Date accepted2003-08-26
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Date published2004-02-01
Mathematical model of a multiple straight-through drawing mill
- Authors:
- S. A. Linkov
The technique of development of mathematical model of multiple straight-through drawing mill for steel wire production is given. Structural diagrams of mathematical models of inter-drum gap, wire deformation center, as well as functional block diagram of threefold -through drawing mill are given. In order to reduce the diameter, the wire is pulled through the drawing machine. A mathematical model of metal deformation center in a monolithic drawing is developed in accordance with the method proposed by I.L. Pelin. Differential equations describing physical processes are modeled in MathLab system.
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Date submitted2003-07-14
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Date accepted2003-08-29
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Date published2004-02-01
Conveyor belts on roller supports and tasks of their implementation
- Authors:
- D. E. Lunev
The basic information about the conveyors with suspended belt is given, their advantages and disadvantages in comparison with the belt conveyors on roller supports and the tasks associated with the prospect of introducing the new design of conveyors in industry are considered. At the first stage of the studies we consider the specificity of the belt stressed state at the transitional section of the conveyor, give the basic mathematical model describing the relationship between the transverse tensioning of the belt and the distance from the beginning of the transitional section of the belt to the end reel. We present the calculation scheme for determining the shape of the belt loaded with loose material and for the belt without any weight loads. The variants of mathematical description of physical models are offered. Preliminary results of the experiments are presented.
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Date submitted2003-07-17
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Date accepted2003-08-09
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Date published2004-02-01
Optimization of the parameters of the linear section of a tubular belt conveyor
- Authors:
- Yu. S. Parkhomenko
For more than 20 years, designers have been developing a tubular belt conveyor with significant advantages. Presented is the design of a tubular belt conveyor based on a belt conveyor designed by OAO "VNIIPTMASH". Loading of bulk cargo in the tubular belt conveyor is carried out at a speed close to the speed of the belt, which reduces dust formation. On the track, the belt is coiled into a pipe by support rollers. The belt with the load coiled into the pipe can bend both horizontally and vertically. At present, the problem of traction calculation of a tubular belt conveyor has not been solved, because the coefficient of resistance to movement of such a belt inside the roller support is not known. Determination of the coefficient of resistance to belt movement will allow to perform traction and strength calculations of the conveyor belt.
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Date submitted2003-07-15
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Date accepted2003-08-19
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Date published2004-02-01
Development of the design of the electric transfer carriage of a tunnel dryer in the conditions of ZAO SPA Keramika
- Authors:
- T. V. Skorkina
At the present time there is an acute problem of uninterrupted supply of quality building material with a simultaneous reduction in its cost. In this regard, enterprises in the construction industry strive to ensure that their products meet the ever-increasing requirements of builders. The task of developing new technological solutions to improve safety, reduce labor intensity and time of work is very urgent. Manual labor exists in every company, and it is the most injury-prone and low-skilled, so the minimization of this type of work is a priority. This is especially true for ZAO Keramika, which provides bricks to about 30% of the construction market of the Northwest region of Russia. Kupchino brick is an environmentally friendly material derived from the firing of natural clay and natural sand.
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Date submitted2003-07-23
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Date accepted2003-08-05
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Date published2004-02-01
Gas flow management at the Kolpino Linear Production Directorate
- Authors:
- N. Yu. Tropinova
The aim of this work is to create a methodology for building a knowledge base in a fuzzy environment of information-analytical complex of dispatcher control of gas flows as an analytical expression for assessing the probability of the system going beyond the permissible limits. Currently, the main thing in decision-making is the qualification of the operational dispatch personnel, software to support decision-making so far does not exist. Making any decision is inherently a multidimensional problem, and the factor space contains "fuzzy" information. Methodology for building information-analytical complex provides as the main step - the creation of a knowledge base of decision-making in the form of an analytical expression. The equation is necessary to build a fuzzy logic regulator in the intelligent ACS of decision-making in gas flow management, and can also be used to create an "adviser to the dispatcher" and simulator.
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Date submitted2003-07-10
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Date accepted2003-08-29
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Date published2004-02-01
Analysis of the energy characteristics of the AVC drive of the fan installation
- Authors:
- E. L. Shevelev
The issues of reduction of unfavorable influence of drive by the system of asynchronous-ventilator cascade (AVC) of the main fan plant on the supply network at potash mine administration of OAO Uralkali (Berezniki) are considered. The results of estimation of losses from reactive power consumption in drive by AVC system both at existing scheme and at other variants of construction of power scheme of inverter and control system are given. The ways of reduction of reactive power consumed by AAC drive are proposed. Recommendations on reduction of reactive power consumed by the drive have been developed.
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Date submitted2003-07-11
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Date accepted2003-08-10
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Date published2004-02-01
Study of the influence of various factors on the enrichment of fine-grained materials on the screw lock
- Authors:
- A. M. Vasilev
The main conclusions of the work on the study of the influence of various factors on the enrichment of fine-grained materials on the screw sluice are considered. The test methodology, the application of the planning matrix and the conclusions obtained as a result of processing the mathematical model are also shown.
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Date submitted2003-07-25
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Date accepted2003-08-21
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Date published2004-02-01
Automatic control system for the clinker burning process in a rotary kiln
- Authors:
- P. V. Volgin
Automatic control system of clinker burning process in rotary kiln, which provides optimal stabilization of clinker quality indicators, is considered. The developed algorithms make it possible to obtain clinker with the required quality indicators, taking into account technological features of the process and a number of factors negatively affecting the quality of control.
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Date submitted2003-07-29
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Date accepted2003-08-15
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Date published2004-02-01
Numerical solution of two-dimensional thermal conductivity problem in a hollow cylinder as applied to coil heating in a bell furnace
- Authors:
- S. I. Kalimulina
A method for numerical solution of the two-dimensional problem of heat conduction in a hollow anisotropic cylinder of finite height has been developed, which is designed to calculate the heating of a steel coil and a bell furnace.
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Date submitted2003-07-09
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Date accepted2003-08-10
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Date published2004-02-01
Experimental prerequisites for the possibility of using nitrogen-containing organic bases in sulfuric acid leaching of gold from copper-containing mining waste
- Authors:
- A. V. Malashta
The study of the composition of solutions based on urea and thiocarbamide for associated extraction of gold from copper-containing technogenic waste will make it possible to establish conditions for effective leaching of metals in the presence of nitrogen-containing organic bases from technogenic mining waste, reduce the environmental load, obtain additional amount of commercial products and use the leaching tails in the construction industry.
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Date submitted2003-07-20
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Date accepted2003-08-07
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Date published2004-02-01
A new method for extracting gold from ores and concentrates
- Authors:
- O. A. Mezina
A fundamentally new method of uncovering refractory gold-arsenic ores is considered by the example of ore processing at the Olimpiada deposit developed by the domestic gold mining company "Polyus". The possibilities of improving the process by optimizing its conditions are considered.
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Date submitted2003-07-11
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Date accepted2003-08-02
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Date published2004-02-01
Development of a mathematical model of the upper level of the automatic control system of the copper-nickel pulp thickening process
- Authors:
- L. A. Pilipets
Thickening of copper-nickel slurry at Talnakh Concentrator was analyzed. The thickening circuit of hydrocyclone discharges before copper flotation is identified and the necessity of its automation is substantiated. A multi-criteria problem statement was formulated and the priorities of individual functionalities were determined. Controllable variables of this automation object, perturbing and controlling influences are distinguished. The two-level system of automatic control of copper-nickel pulp thickening process, its structural scheme, and a variant of mathematical model of the upper level are proposed.
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Date submitted2003-07-24
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Date accepted2003-08-20
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Date published2004-02-01
Main areas of improvement of the alumina production model for plants operating according to the Bayer method
- Authors:
- D. A. Savelev
The model of alumina production created earlier at the Moscow Institute of Steel and Alloys according to Bayer method for conditions of the Nikolaev alumina refinery is evaluated. The model makes it possible to quickly assess the work of the whole alumina production and to choose the option that provides the best economic performance. The tasks for further improvement of the program associated with the optimization of the main stages of alumina production - leaching and decomposition are considered.
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Date submitted2003-07-27
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Date accepted2003-08-03
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Date published2004-02-01
Carbonation factors for low degree of decomposition of aluminate solutions
- Authors:
- A. V. Tsybizov
Theoretically substantiated multistage carbonization process and changes of solid phase formation conditions at different stages of aluminate solutions decomposition. As a result of laboratory studies adequate mathematical dependences of process parameters on technologically significant factors were obtained. Their analysis made it possible to establish the decisive contribution of the technological mode of induction period to formation of the fractional composition of aluminum hydroxide precipitate. It was also shown that the increase in the yield of large fractions of synthetic gibbsite of spherulitic structure is provided by increasing the supersaturation of aluminate solution associated with an increase in the CO 2 content in the gas phase and blowing rate at all investigated temperature values.
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Date submitted2003-07-02
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Date accepted2003-08-14
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Date published2004-02-01
Geodetic work for installation and alignment of large-size equipment
- Authors:
- Abdali Zhalal Akhmad
The article considers the application of geodetic methods in the operation of large industrial units on the example of rotary kiln maintenance in order to obtain data for its subsequent adjustment for the elimination of its possible deformations. For performance of works one of variants of complex Axyz (Swiss firm "Leica") has been chosen. The possibility of application of this complex is shown and the new specially developed technique for measurement of the given object is described. The technology of geodetic works on this object is considered.
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Date submitted2003-07-20
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Date accepted2003-08-29
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Date published2004-02-01
System assessment of secondary mineral resources in the conditions of OAO Gaysky MMP
- Authors:
- P. V. Berezovskii
- O. A. Matorina
The main types of waste from mining and metallurgical production, used for backfilling of pits and mines, backfilling of tailings dams, road ballasting, in the production of building materials, crushed stone, for the re-extraction of various components, are considered. A brief description of the Gaisky Mining and Processing Combine as an independent technogenic deposit and information on the percentage content of useful components in the accumulated wastes are given. A methodology for systematic environmental and economic cadastral evaluation of secondary mineral resources is proposed. It is proposed to evaluate secondary mineral resources from the position of the national economy (national-economic assessment) and from the position of commercial interests of the enterprise (commercial assessment). The criterion indicator, in our opinion, should be the economic effect on the national economy.
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Date submitted2003-07-01
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Date accepted2003-08-15
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Date published2004-02-01
Environmental and economic justification of innovative solutions for sustainable development of the Kingisepp mining and industrial complex
- Authors:
- N. G. Guseva
The problems of environmental and economic justification of innovative solutions for the sustainable development of the Kingisepp mining and industrial complex, the functioning of which largely determines the development of the economy of Kingisepp district and the Leningrad region, are highlighted. The greatest influence on the economy and ecology of the district has LLC PG Phosphorit. One of the factors increasing production efficiency at OOO PG Phosphorit while reducing the negative impact on the environment is the ecologization of organizational and technical solutions. As such solutions, the organization of the system of hydraulic transport of phosphate rock for processing and the creation of drainage structures at phosphogypsum dumps are proposed.
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Date submitted2003-07-06
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Date accepted2003-08-18
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Date published2004-02-01
Development of consumer lending at the regional level and at the level of financial centers of Russia
- Authors:
- O. A. Zaikina
Abroad, consumer lending is one of the most powerful segments of the banking business. In Russia, the real applicants for bank credit are citizens with incomes over $ 500 per month. The potential of the lending market is several billion dollars a year, and the bank share, even at the minimum interest rate of 10-12% per annum in foreign currency is estimated at hundreds of millions of dollars. The development of consumer lending challenges banks to find the best balance between a number of contradictory requirements. Today, customers pay more attention to speed and convenience, especially when it comes to small amounts. However, there is a problem: the less time is given to checking the credit application, the higher is the probability that risky credits will increase. The credit scoring system, which is becoming the key element of the bank's decision-making system for lending to both private clients and small businesses, helps to solve this problem in the best way.
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Date submitted2003-07-26
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Date accepted2003-08-13
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Date published2004-02-01
Problems of technology for underground isolation of radioactive waste
- Authors:
- O. S. Kaledin
The requirements to the technology of radioactive waste isolation in the spent underground space are formulated as well as the main problems of creating the safest waste disposal technology, which would ensure the safety of the repository and its biological safety in the distant future, up to the 300-year term of the waste's ecological hazard preservation. The design and construction of underground repositories should be carried out in such a way that after the closure of the repository in the future there will be no need for any work to maintain the structure or its repair. Thus, one of the main problems is predicting the future behavior of the repository under the influence of constantly changing external influences.
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Date submitted2003-07-21
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Date accepted2003-08-10
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Date published2004-02-01
Spatial modeling of a coal deposit using neural network methods in the Smart Mining system
- Authors:
- A. G. Litvinov
The main components and capabilities of the Smart Mining software system for automating geological and surveying works are considered. The relevance of developing such a system is justified. The advantages of the developed spatial model of coal deposit data representation within this complex over other existing models are described. The effective software methods and algorithms of automated construction of the spatial model are described. The relevance is substantiated and the basic principles and possibility of introducing intelligent neural network methods in the Smart Mining system are considered.
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Date submitted2003-07-25
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Date accepted2003-08-11
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Date published2004-02-01
Influence of economic indicators on the efficiency of regulation of oil field development by horizontal wells
- Authors:
- D. P. Patrakov
To improve the economic efficiency of oil field development a new methodology for calculating the dependence of net discounted cash flow on the length of the horizontal wellbore, which is based on technical solutions developed at the department of development and operation of oil and gas fields, and the use of software products simulation of field development process is proposed. Based on the results of the studies performed, technical and economic proposals were made for the development of the Cherepanovskoye elevation of the Mishkinskoye field.
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Date submitted2003-07-03
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Date accepted2003-08-24
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Date published2004-02-01
Environmental and economic assessment of the environmental impact of mining enterprises
- Authors:
- N. V. Pashkevich
- L. S. Sinkov
- E. L. Solodkov
The main methods for assessing the environmental and economic impact of mining enterprises on the environment are considered. The classification of the currently existing methods is given. The disadvantages of the existing typical methods of assessment of environmental damage are analyzed and recommendations on the use of various methods as a combined method are given. An example of assessment of ecological and economic damage of the impact of the Krasny Bor toxic waste landfill is offered. A combined method was used in calculations, which made it possible to determine the annual environmental damage in the amount of 151 million rubles. Based on the calculations it is recommended to implement measures to reduce the impact of the landfill on the environment.
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Date submitted2003-07-27
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Date accepted2003-08-27
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Date published2004-02-01
Functions and tasks of the state in the field of management of the geological exploration industry
- Authors:
- E. A. Soloveva
- L. A. Nikolaichuk
The main problems of the geological exploration industry are considered: the lack of financing and imperfections in the mining and tax legislation, which do not create favorable conditions for attracting investment in this sector. State regulation of the development and use of the mineral resource base is considered as the main criterion for solving these problems. A number of measures, the adoption of which will lead to a more effective system of subsoil use, are proposed. These are, first of all, reforms in the field of taxation, licensing, insurance market. It is necessary to develop a new national mineral resource policy in the presence of the strictest legislative control by the state.