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Date submitted2008-09-09
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Date accepted2008-11-15
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Date published2009-03-01
Application of indicator kriging in computer modeling of ferruginous quartzite occurrences (on the example of Yakovlevskoye deposit)
- Authors:
- I. V. Apukhtina
Interpolation of iron grades of ores of the Yakovlevskoye deposit using MultipleIndicator Kriging method allowed taking into consideration mixed accumulations, which had been identified using statistical analysis of iron grade distributions of iron-rich ores. Using Indicator Kriging, there was carried out probabilistic logging of different ore types (paint, blueing) and barren rocks within the bounds of the first-priority development zones of the Yakovlevskoye deposit. That allowed taking into consideration density values of different ore types by reserve estimation.
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Date submitted2008-09-15
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Date accepted2008-11-23
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Date published2009-03-01
Prospective assessment of the Topazovsky site (Amur region) for native gold
- Authors:
- D. Yu. Balykov
The Topazovsky area was investigated as. Its position is very favorable. It is situated in the industrially developed region in some kilometers from the Trans-Siberian Railroad. Proximity to the Pokrovsky mine makes it possible to regard the area as an additional source of raw materials for the Pokrovsky ore mining and processing enterprise. Metallogenic analysis was carried out and the classification of gold-ore deposits of the Amur region was made to evaluate the Topazovsky area. The classification included the regional and local characteristics of nine gold ore deposits. These deposits were evaluated on the basis their geotectonic position, structural and formation types of the province, structural position of ore field and ore controlling structure, enclosing rock, morphological type of mineralization and their belonging to an ore formation.
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Date submitted2008-09-19
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Date accepted2008-11-11
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Date published2009-03-01
Prediction of filtration-capacity properties of the reservoir in the Lower Permian sediments of the Timan-Pechora province based on seismic and GIS data
- Authors:
- A. A. Vazaeva
During many years the major task of seismic researches was studying a relief of basic reflecting borders. Today with the advent of and development of new methodic technological decisions, introduction of powerful high-speed computer complexes, fast rates of growth amounts of works 3D before seismic- explorer the problem is construction of detailed geological model of the area displaying internally a structure of sedimentary objects is put. Now already at a search stage it’s necessary to know such parameters of environment, as porosity, sedimentology, fluid-saturation. Construction of the fullest model of environment provides planning the optimum scheme of development deposits and reduces risk at explorative drilling. Most effectively problems of forecasting specified petrophysical characteristics of a geological section are solved according to seismic prospecting on the basis of the analysis seismic attributes, wave inversion, the AVO-analysis.
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Date submitted2008-09-20
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Date accepted2008-11-17
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Date published2009-03-01
Use of dynamic interpretation of seismic data to predict reservoir properties in carbonate section
- Authors:
- A. V. Ekimenko
In this report author introduces the results of dynamic attributes for prediction of reservoir properties. The results of seismic inversion were considered in one part of Timan-Pechora region. Author illustrates the effectiveness of dynamic interpretation of seismic data from carbonate section. Dynamic attributes permit to display anomalous zones of investigation area.
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Date submitted2008-09-12
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Date accepted2008-11-22
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Date published2009-03-01
Petrological and geochemical features of glassy rocks of Nachi-Kinskoye and Payalpan deposits (Kamchatka)
- Authors:
- T. S. Eremina
This work represents results of petrologic and geochemical study of features of natural rhyolitic volcanic glasses of Kamchatka. Obsidians of two famous deposits of Kamchatka – Nachikinskoe and Payalpan were used for study. Apart from common comparison of petrologic and geo[1]chemical features of rocks, special attention to water species represented in glasses have been paid. IR spectroscopy was used to provide this information. According to the results of study, conclusion about probable origin of Payalpan’s glasses has been made.
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Date submitted2008-09-30
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Date accepted2008-11-28
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Date published2009-03-01
Stratigraphy of Paleozoic sediments of the Lyadge-Yakha river basin
- Authors:
- A. L. Zherlygin
Detail study of rocks outcropping in the Lyadgey-Yakha river basin was carried out within frame of the state geological mapping of the R-41-XXXVI sheet in the scale 1:200000 (Kara-Silovskaya area). The results have allowed to define the diagnostical signs for Khorotskaya, Kosvozhskaya, Nyan’vorginskaya, Vorgashorskaya, Kechpel’skaya series, as well as to improve the model of the area geological structure.
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Date submitted2008-09-21
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Date accepted2008-11-14
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Date published2009-03-01
Engineering-geological substantiation of the possibility of high-rise construction in St. Petersburg
- Authors:
- A. M. Zhukova
Opportunities of radical breeds of sedimentary cover usage in St.-Petersburg as the basis of high-altitude buildings are considered in the paper in compressed form. Influence of a underground relief of a radical breeds roof of late Vendian, generated by buried bottomlands, on feature of an engineering-geological cut of the basis is analyzed. The generalized parameters of jointing and physic mechanical properties of top-kotlin clay of late Vendian and early Cambrian clay adjournment are resulted, allowing to estimate bearing ability of these soils. Recommendations whenever possible uses of various types of the bases depending on an engineering-geological cut are given.
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Date submitted2008-09-17
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Date accepted2008-11-14
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Date published2009-03-01
Relation of supramolecular structure and sorption capacity of vitrinite coals of the south-western part of Donbass with geological factors
- Authors:
- V. N. Novikova
Since the end of the XX century the great attention is attracted to investigation of structure and properties of the high-carbons mineral substances, as well as to physical-chemical processes in which they are involved, in the nano-level space – within range 10 –8 -10 –9 m, purposefully to studying the nature of the coal-forming process, generation of methane, gas-dynamic events in coal seams, to designing the new types of suspension fuel on the base of submolecular carbon aggregates. The paper analyzes peculiarities of the submolecular structure of vitrinite, observed in raster electron microscope, sorption capacity of coals and links of these parameters with geological factors.
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Date submitted2008-09-20
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Date accepted2008-11-28
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Date published2009-03-01
Study and perspectives of development of hydrocarbon resource base of Kalinin-grad region
- Authors:
- A. A. Otmas
In the Kaliningrad region the industrial oil recovery has been begun in 1975, and the peak has reached in 1986 when it has been extracted 1,3 million tons of oil. Now this figure has considerably decreased. And the primary goal of prospecting works of area is reproduction of industrial stocks and preservation of rates of an oil recovery. In the given work the review of a condition of resource base of the Kaliningrad region is given, geological and economic aspects of its development are resulted. From the analysis of the developed situation in region aspects for decrease in a rod of profitability of development of oil pools and as consequence, attraction in region new are offered.
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Date submitted2008-09-19
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Date accepted2008-11-08
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Date published2009-03-01
Investigation of engineering and geological features of Lower Cretaceous and Paleo-Gene Sediments as a base for cement plant structures (Republic of Mordovia)
- Authors:
- K. V. Pankratova
Engineering-geological features of a profile of the basis under the constructions of cement factory in Republic Mordovia are analyzed in this paper. The criterion of designing on the second limiting condition is considered. The specificity of physicomechanical properties of silica rock and K1- J3 clay is considered. Parameters of standard physicomechanical properties of soils are resulted, mass definitions of swelling soil ability and changes of clay durability at additional moisture are executed. Laws of increase in bacterial mass in soils at moisture are resulted. Values of settlement resistance for silica rock depending on parameters of resistance to shifting are defined, they are sizes of coupling and a corner of internal friction.
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Date submitted2008-09-03
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Date accepted2008-11-16
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Date published2009-03-01
Peculiarities of internal structure of feldspars in granites of Salma massif
- Authors:
- D. A. Petrov
Some samples of rapakivi granites from Salmi massif (Karelia) were investigated. The inner structure and the composition of feldspars in granites are necessary for understanding of the crystallization paths of this rock. X-ray diffractometry, cathode luminescence (CL) and microprobe analyzes were used in this study. It was found, that alkali feldspar from rapakivi granites is mixture of monoclinic and triclinic phases, and the ratio of these phases is various for different types of granites. A mirmektite zone corresponding of quartz-feldspar eutectic composition is typical for large ovoid crystals. CL and microprobe detected a compositional zoning and two types of albitization in plagioclases.
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Date submitted2008-09-18
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Date accepted2008-11-25
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Date published2009-03-01
Structural peculiarities of ice of Lake Vostok (Central Antarctica)
- Authors:
- E. V. Polyakova
An unusial distribution of Vostok lake ice crystals by dip incination of c-axis was showed by statistical methods. Such orientation was not observed in any lake ice before, so in Vostok lake some unusual freezing processes take place.
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Date submitted2008-09-22
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Date accepted2008-11-16
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Date published2009-03-01
Diagnostics of natural stone of embedded crosses of Novgorod temples
- Authors:
- A. B. Tarasenko
Provenance of the building stone used in wall roods of historical churches of Velikiy Novgorod was studied. All roods are made of pale rose to white limestone containing Brachiopoda shell detritus. The physical characteristics and petrography of limestone correspond to the Semiluksky regional horizon of the Russian platform.
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Date submitted2008-09-24
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Date accepted2008-11-06
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Date published2009-03-01
Analysis and assessment of natural and technogenic factors of corrosion aggressiveness formation in the underground environment of St. Petersburg in relation to building materials
- Authors:
- E. Yu. Shatskaya
In the paper the basic factors defining formation corrosive aggression in the deep underground tunnel. On the basis of the lead inspections in underground developments is executed the systematization of the basic forms of destruction. The composition of the water extracts prepared from destroyed concrete was investigated. Definitions of number and species of micro-organisms are executed. By results of experimental researches it is drawn a conclusion on a role of biocorrosion in destruction tubing and a waterproofing lining.
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Date submitted2008-09-07
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Date accepted2008-11-05
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Date published2009-03-01
Analysis of the efficiency of state regulation in the fuel and energy complex of Russia
- Authors:
- Ya. V. Voronina
- L. I. Iseeva
The fuel and energy complex is a basis of economic development of Russia for long time. The most part of tax revenues in the state budget is made with taxes from sale of oil and gas, so the government is interested in perfection of this system. Nowadays In Russia the state policy in sphere subsurface resources management is focused on increase of efficiency of use of a mineral raw-material base, maintenance of its reproduction, rational and safe wildlife management. Volumes of financing of prospecting works have increased in times. In given clause the reached results and problems which are necessary for solving are stated, and ways of the decision are offered.
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Date submitted2008-09-19
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Date accepted2008-11-22
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Date published2009-03-01
Use of Foreign companies' experience for formation of investment program for implementation of diversification strategy of regional gas company
- Authors:
- N. P. Galayda
The article is dedicated to the topic of use of foreign companies' experience during the process of regional gas companies diversification strategy start-up. This topic is very actual for the current moment, because it helps to solve many problems of the company. The analisys of global energy companies in the sphere of its business diversification is shown in the article. The materials of the rating agency Platts were used in this investigation. The experience of companies from the Platts Rating was used in the process of research. There were found the main global trends of energy market development, some projects of JSC GAZPROM's strategy change in North-West region were suggested. Also as a result of basics and regional gas companies' analisys there was offered a regional gas company's diversification estimation model. Consequent alternative changes and main projects were offered and based on this model.
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Date submitted2008-09-12
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Date accepted2008-11-06
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Date published2009-03-01
PO as a step on the way to increase competitiveness of Severstal
- Authors:
- E. I. Gapeeva
The SEVERSTAL company IPO procedure, which is the biggest international steel producer, is considered in this paper. Initial public offering consists of supplying ordinary shares and GDR outside the Russian Federation and supplying ordinary shares in the country. The reasons of solution acception connecting with offering and new opportunities for subsequent market growth are also determined.
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Date submitted2008-09-02
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Date accepted2008-11-21
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Date published2009-03-01
Ways of development of oil and gas companies of Russia in the conditions of globalization
- Authors:
- A. V. Zhimirova
The brief characteristic of globalization process in modern international economic relations as well as interactions of national facilities in the world markets is widely brought. The factors promoting globalization of an economic activity, formation of the international economic and power organizations and structures in which Russia accepts active participation are stated.
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Date submitted2008-09-03
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Date accepted2008-11-29
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Date published2009-03-01
Current state and directions of development of fuel and energy complex of the Republic of Tajikistan
- Authors:
- Z. Zh. Ziyaeva
In the article to be spent the current status and prospects development of fuel and energy complex development in Tajikistan Republic. The main task for decrease the country’s energy dependence. But this presses is impossible without discovering new hydroelectric power stations, deposits of hydrocarbonic raw materials, intensification of oil, gas and coal recovery on developed deposits, without qualified specialists.
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Date submitted2008-09-08
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Date accepted2008-11-21
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Date published2009-03-01
Comparative approach in cost estimation of quartz sand deposit of Leningrad region
- Authors:
- O. N. Kasatkina
The comparative way is based on the idea that the lot’s price can be defined by the analysis of the transactions with the lots that have the same characteristics. This method includes following operations: observing the transactions with the objects similar to the current one; revealing the links between prices and characteristics; calculating the most appropriate price that can be paid for the lot which is being evaluated. The evaluators’ poll, organized by Canadian Institute of Mining and Metallurgy, revealed that the comparative method is one of the most popular ways of practical evaluation. This approach has many advantages, such as: clean logic and convincing results in case of having enough data on similar transactions; easy check of initial data; low labor-intensiveness. The basic disadvantage of the comparative approach is that it can be used in terms of having all necessary information about similar lots that has been transacted in the same commercial conditions only.
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Date submitted2008-09-03
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Date accepted2008-11-18
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Date published2009-03-01
The role of investments in the innovative development of iron ore enterprises in Russia
- Authors:
- R. V. Korchenkov
Now gets the increasing urgency a question of transition of the Russian economy from an extracting orientation to release of hi-tech production. In clause have found reflection the basic problems Russian ironore the branches connected with introduction of innovative technologies, experience of leading enterprises in the decision of the given problem is shown.
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Date submitted2008-09-21
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Date accepted2008-11-26
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Date published2009-03-01
Functions of state management of economy in the sphere of subsoil use
- Authors:
- V. A. Ledovskikh
Methods and forms of the state administration of economics under conditions of market economy and in the sphere subsoil usage are considered in the article. The structure of the state administration mechanism in the subsoil usage area is offered in the work. The system of economic methods aimed at management, development and use of mineral resources are represented.
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Date submitted2008-09-05
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Date accepted2008-11-17
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Date published2009-03-01
Assessment of prospects of development of the internal market of coal in modern conditions
- Authors:
- A. N. Martemyanova
In the article the modern condition of coal home market in Russia is analyzed; the problem of necessity of development of a home market is considered; main factors that have an influence on coal consumer’s increasing in a home market of energy resources are determined.
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Date submitted2008-09-22
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Date accepted2008-11-07
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Date published2009-03-01
Increase of Competitiveness of OJSC «Combinat «Magnezit»
- Authors:
- A. S. Myagkov
The given work is devoted to development in the field of increase of competitiveness at the enterprise on manufacture of refractories Open Society «Combine «Magnesit». In work the method of carriying out of outsourcing at combine is offered. It will allow to lower costs in rigid competitive struggle, due to efficient control auхiliary processes.
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Date submitted2008-09-03
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Date accepted2008-11-14
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Date published2009-03-01
Economic estimation of formation and use of reserve fund of oil products on the territory of North-West Russia
- Authors:
- E. I. Sapozhnikova
The given work is devoted to the substantiation and an economic estimation of formation and use of Oil products Reserve Stocks in the Northwest of Russia. The creation of these strategic stocks is becoming one of the priority tasks of the Russian Government. The purpose of creation of commercial stocks of oil products is the stabilization of prices instability in the Russian market, the prevention of possible consequences of great drop/jump in prices, and reimbursement of storage costs as well. So, government should create special stocks that will be able to take advantage immediately for economic targets. The nomenclature and recommended volumes of stocks according to the current economic situation on the basis of the analysis and planning of strategic oil products consumption have been carried out. Reservation period and geographical arrangement of oil products storage areas in the territory of the district have been defined. Recommendations to the further use and planning of oil products commercial stocks are given on the basis of economic estimation results of actions that have been offered by the author and the analysis of the received data as well.
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Date submitted2008-09-07
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Date accepted2008-11-17
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Date published2009-03-01
Utilization of competitiveness potential in economic assessment of potash industry enterprises in Russia
- Authors:
- T. V. Ponomarenko
- A. N. Sultani
The effective management of the enterprises needs an objective method of its evaluation. The paper described acompetitiveness’ potential method. The difference of this method from widely used method of competitiveness, as well as its great objectivity represented on the example of potash industry companies -JSC «Silvinit» and JSC «Uralkali».
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Date submitted2008-09-29
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Date accepted2008-11-11
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Date published2009-03-01
Development of economic mechanism of stimulation of innovation activity of oil refining complex enterprises
- Authors:
- A. A. Shaidenko
The paper describes some vital problems of Russian fuel-energy complex. Special attention was paid to the problem of poor oil processing quality in Russia. The resource-innovation approach was examined and the sense of it was shown. Also the main principles of the resource-innovation approach were discussed. The problem of investments lack at the oil processing sphere has been considered. Methods of investments stimulation are proposed. It is concluded that the necessity of investment activity stimulation and strategic and regulative of such activity documents exists in Russian petroleum branch.
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Date submitted2008-09-30
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Date accepted2008-11-04
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Date published2009-03-01
Graphic compaction of educational material
- Authors:
- M. V. Belova
This article describes the graphical sealing educational knowledge, which consists of two phases: Phase coding knowledge, consolidation phase (previously coded). In my view graphical seal allow successfully assimilate knowledge not only of common units of knowledge (facts, events, definitions, concepts, laws, etc.), but also the links between them. The goal of this work is to systematize the available data on the topic.
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Date submitted2008-09-06
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Date accepted2008-11-18
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Date published2009-03-01
Influence of nanostructured metal additives on antifriction properties of industrial oil
Measurements of integrated parameters of friction and their comparative analysis by method of acoustic emission in a ultrasonic range of frequencies (20-300 kHz) for pair friction metal – metal with lubricant in the form of the industrial oil filled by traditional additives (coal) and nanostructured powders on the basis of aluminium are carried out. Influence of firm additives on displacement of a region of dry friction on curve dependences of a parameter of friction from pressure in a zone of contact is estimated. Nanostructured sample on the base of the aluminium powder PAP-2 containing on a surface two-component nanofilm active cationic tensides, which improve antifrictional characteristics of industrial oil I-20 in 4-7 times is revealed. Representations about the mechanism of action of additives on antifrictional properties of oil are developed.
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Date submitted2008-09-28
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Date accepted2008-11-15
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Date published2009-03-01
Strong current voltage converter
- Authors:
- S. A. Vysotskyi
Every year volume of energy consumption is increasing all over the world, but the number of sources is descending, either because of shortage of resources (oil, coal, gas) or because of problems related to their mining and processing (uranium). Scientific research on new strain converters, which could give both high coefficient of efficiency and work in extreme conditions, is still being carried on. So we need something more stable, than semiconductor electronics, in order to build nuclear power plants of new generation, build sea-vessels and starships with self-sufficient energy supply. This work represents data, obtained within a research on anisotropic plasma generated by thermo-emission converter. The main problem being discussed is the profitability and possibility of using and involving thermo-emission converters in our modern plasma energetic, e.g. as a power switch.
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Date submitted2008-09-30
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Date accepted2008-11-21
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Date published2009-03-01
Application of the direct variant of the boundary element method in solving geomechanical problems for Starobinskoye field conditions
- Authors:
- A. P. Gospodarikov
- L. A. Bespalov
The natural stress-strain state of mining massif is disrupted while mining works is carried on. Different numerical methods can be applied for calculation of parameters stress and strain state in the mining massif: the finite difference method, the finite-element method, the boundary element method, the application of the last of these methods is described in this work. The influence of technological removing schemes on stress strain state of rock massif was analyzed as applied to Starobinsky deposit on the attenuated stage of mining.
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Date submitted2008-09-07
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Date accepted2008-11-02
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Date published2009-03-01
Numerical modeling on the basis of the method of finite differences of some applied problems of geomechanics
Development of computer engineering in mathematical modeling gives a possibility to use the numerical methods parallel with the analytical methods. Among them finite difference method, finite elements method, boundary element method and others. FDM is the effective one, which can be used in geomechanical problems extensively.
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Date submitted2008-09-06
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Date accepted2008-11-05
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Date published2009-03-01
On the interrelation of water repellent properties and reactivity during oxidation of nanostructured metals based on steel and aluminum
It was examined the correlation between water-repellent properties and reactionary properties in the process of oxidation for nanostructured materials, based on steel and industry trademarks of aluminum powder. Analysis experimental data showed, that for samples, which have nanofilms on cationic tensides and silicon-organic compounds on steel there is the symbatic correlation between water-repellent properties of coatings and their protective properties. And samples, based on aluminum, have highest intensivity of oxidation with middle level of water-repellent properties.
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Date submitted2008-09-06
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Date accepted2008-11-17
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Date published2009-03-01
Nickname is a person's virtual name
- Authors:
- A. A. Moskalchuk
The article is devoted to one of the problems of nomination in the internet (internet-space) – to the problem of nicknames. In the article the notion of nickname is under consideration. The article also tells about different motivations in choosing this or that virtual (internet) nickname and the classification of these names.
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Date submitted2008-09-10
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Date accepted2008-11-09
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Date published2009-03-01
Kinetics of short glow discharges taking into account non-local ionization
- Authors:
- A. S. Mustafaev
- A. V. Morin
Analytic model for estimating main parameters of the shot glow discharges is presented. Proposed model takes into account as the electrons production in cathode sheath as nonlocal ionization in the negative glow plasma. According the traditional approach, discharge is dividing on different areas by means visual analysis. Discharge gap is dividing on volume charge sheath and quasi-neutral plasma in presented model. Plasmas areas comprise negative glow, Faraday dark space and positive column. Simple expressions for main glow discharge characteristics (voltagecurrent characteristic, cathode sheath) as well as plasmas density profile without volume recombination are deduced. Finding results satisfactorily correspond to the experimental data. Traditional Enghel – Shteenbek model (witch founded on local approach) gives more considerable disar[1]rangement with experiment.
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Date submitted2008-09-05
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Date accepted2008-11-23
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Date published2009-03-01
Leak detection system
- Authors:
- R. I. Nizamutdinov
- R. I. Nizamutdinov
This work is devoted to an actual issue of detecting leakages in a system of main oil pipelines. Now it is necessary to pay special attention to the development of the main transport of oil, the prevention of leakages of oil for ecological safety maintenance in the state. There are some systems of detecting leakages: the system of the continuous control of leakproofness of pipe-lines’ segments is based on the registration of acoustic emission (noise), resulting from liquid leakage through end-to-end defect, in the presence of redundant pressure in a pipe; the parametrical system of detecting leakages LeakSpy – is based on an analysis of the profile of pressure and the statistical analysis of the data obtainted. Joint development of Czech company Process Automation Systems and Open Company NPA «VIRARealTime» (Russia) Leak Detection System is also actual. It is based on accurate measurement of pressure and on a statistic estimation of fluctuations of pressure in different points of a pipeline.
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Date submitted2008-09-22
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Date accepted2008-11-28
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Date published2009-03-01
Justification of selection of special means of professional-applied physical training for a mountain master
- Authors:
- I. A. Panchenko
This article describes the usage of special physical culture practices to prepare miners to meet difficulties under the earth.
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Date submitted2008-09-07
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Date accepted2008-11-10
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Date published2009-03-01
Traditional wedding rite in Mali culture
- Authors:
- D. Sagara
In the report speech goes about the traditional wedding ceremonies into Mali. Wedding is the basic of any culture. In any culture there are special features of rites and rituals. Into Mali wedding ceremony has distinctive nature and surprising rituals, about which is vividly explained in the report.
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Date submitted2008-09-29
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Date accepted2008-11-27
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Date published2009-03-01
German and British tanks in North Africa during the Second World War
- Authors:
- O. O. Tikhonov
The battle for North Africa was a struggle to control the Suez Canal and get access on oil from the Middle East and raw materials in Asia. Oil in particular had become a critical strategic commodity due to the increased mechanization of modern armies. Britain, which was the first major nation to field a completely mechanized army, was particularly dependent on the Middle East oil. The Suez Canal also provided Britain with a valuable link to it overseas colonies: part of the lifeline that ran through the Mediterranean Sea. Thus, the North African campaign and the naval campaign to control the Mediterranean were virtually very closely linked to each other.
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Date submitted2008-09-24
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Date accepted2008-11-10
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Date published2009-03-01
Justification of rational scheme of power supply of underground gas storage stations from the point of view of providing the required category of reliability
- Authors:
- A. V. Belenko
- S. P. Petrov
Necessity of the further reliability augmentation of an electric-power supply of users of the electric power for the gas industry at reduction of growth of expenditures by decentralized power supply stipulates use of power stations of own needs of small capacity for sufficing necessities of the factories in the electric power. To these power stations the series of habits is inherent, which should be examined carefully to provide high-scale of reliability of development and a distribution of electricity.
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Date submitted2008-09-18
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Date accepted2008-11-03
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Date published2009-03-01
Application of plasma aluminide coatings for increasing the reliability of operation of gas turbine engine blades
- Authors:
- I. D. Bulikin
There is shown possibility of using covering consists of Сr-Co-Al-Y for protection blades of turbines that are used in compressor stations. In conclusion it is said that using these coverings increase reliability of exploitation of turbine’s blades and give opportunity for developing jet turbine engines for rising of efficiency.
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Date submitted2008-09-16
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Date accepted2008-11-13
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Date published2009-03-01
Influence of unbalance currents on operation of group protection against single-phase faults in various modes of network operation
- Authors:
- M. A. Bychin
We have considered influence of surface complex of current noise on the operations of group protection from single-phase closing to the ground in circuit 6-35 kilovolt with isolated neutral terminal of mountain enterprise. We also have analyzed actions of noise operations of protections in different conditions of circuit: in normal state of working, when short circuit and single-phase closing to the ground arise on protectable connection.
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Date submitted2008-09-25
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Date accepted2008-11-27
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Date published2009-03-01
Mathematical and simulation models of the inertial resonant jaw crusher with the electric drive of the reciprocating-rotating motion
- Authors:
- Yu. A. Gavrilov
Mathematical and imitating models of an inertial resonant crusher with the electric drive of returnable, rotary movement are developed. Operating modes of electromechanical system on resonant (own) frequency of system are investigated (researched) at various representations of loading (viscous, equivalent viscous, dry friction and their combinations) at symmetric and asymmetrical cycles of loading, both in opened, and in the closed control system.
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Date submitted2008-09-16
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Date accepted2008-11-06
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Date published2009-03-01
Modeling of pipeline transportation of pasty slurries
- Authors:
- S. E. Demyanov
In paper is presented the methodology calculation parameters hydraulic transportation paste-like mixtures, which based on methodology of calculation parameters of hydromixture with high concentration of small particles, based on Bingam's mathematical model of the flow of such mixtures in pipelines. By the base of methodology is apprehension, according to which deformation of mixtures volume with high concentrations of solid particles is taken around by formation the bodies of flow with variable values the concentrations of solid particles and viscosity in cross section of pipe. Results of experimental investigations that were carried out in laboratory conditions and in industry allowed to develop the methodology for pipeline transportation calculation with high concentrated mixtures.
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Date submitted2008-09-06
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Date accepted2008-11-06
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Date published2009-03-01
Profiling of a hydro turbine grid for the drive of underwater mining machines
- Authors:
- N. A. Ekimov
The sequence of profiling of a flowing part and the water wheel is considered, expressions for definition of geometrical parameters are resulted and the method of forming-up of the water wheel lattice profile is presented.
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Date submitted2008-09-09
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Date accepted2008-11-12
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Date published2009-03-01
Modeling of resonant asynchronous electric drive of reciprocating-rotating motion with algorithm of direct torque control
- Authors:
- V. V. Ivanik
Imitating modelling the resonant electric drive of return-rotary movement (RRM) for dynamically the counterbalanced chisel shell with algorithm of a direct torque control (DTC) is lead. The control system is developed. Results of modelling opened and closed electromechanical systems (EMS) are resulted.
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Date submitted2008-09-29
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Date accepted2008-11-10
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Date published2009-03-01
Structure and control algorithms of sensorless frequency controlled electric drive for mining machines
- Authors:
- A. S. Ivanov
In clause the urgency of transition from traditional gauges of electric drives of a dredge to nogauge is shown to the observer of the basic coordinates, the mathematical model of the adaptive observer for a drive of rise of a dredge is proved and created.
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Date submitted2008-09-25
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Date accepted2008-11-15
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Date published2009-03-01
Application of polymer protective coatings for oil and oil products storage
- Authors:
- O. V. Kozachok
At storage of the oil and oil products appears the big amount of the problems, in accordance with loss from natural evaporation. Exists the ensemble of the ways of protection. In given article is organized analysis of the using existing ways and methods. The offered method of protection to oil and oil products on base of the use polymeric defensive covering.
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Date submitted2008-09-09
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Date accepted2008-11-13
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Date published2009-03-01
Features of calibration of devices for measuring the quantity of components in multiphase flows
- Authors:
- D. S. Levashov
A radioisotope instrument for separate oil, water and gas determination in multiphase multicomponent borehole liquid flows calibration is described in the article. An instrument calibration methods on static experimental test bench is given. Possible errors for the calibration methods are assayed.
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Date submitted2008-09-28
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Date accepted2008-11-19
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Date published2009-03-01
Investigation of operation and control of electromagnetic valves of the system of mobile reference complex for oil well productivity estimation
- Authors:
- A. N. Lyubchik
In article the actual problem of change of quantity of residual gas in a stream of commodity petroleum is considered. The devices based on a radioisotope method of measurement and their testing means are submitted. The principle of work of a mobile reference complex on the basis of that the device of the electromagnetic valve was offered is investigated and described.
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Date submitted2008-09-25
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Date accepted2008-11-27
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Date published2009-03-01
Slaughtering electrode heat and steam generator for thermal methods of extraction of high-viscosity oil
- Authors:
- E. E. Melnikova
The processes in face heat-generator with a coaxial electrodes geometry are reviewed. The computational ratio for definition of resistance to working fluid, steam and liquid volumes are obtained at given electrical power and given heat flow of the heater.
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Date submitted2008-09-10
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Date accepted2008-11-16
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Date published2009-03-01
Estimation of selectivity of protection devices against single phase earth faults in 6(10)kV mine networks
- Authors:
- P. A. Rogov
The analysis of high voltage coal-mine distribution networks has been carried out to build up the equivalent circuit in order to study the ground fault processes under different conditions. The current distribution-based evaluation of protective relay functionality has revealed a strong impact of the network topology, length of cables, continuous variation in the network parameters on the efficiency of protective relays. The increase in the distributions network reliability can by achieved through involving the information exchange between the network nodes in the process of relay decision making.
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Date submitted2008-09-04
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Date accepted2008-11-29
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Date published2009-03-01
Justification and selection of parameters of the device for destruction of oversized mines in underground conditions of De Beers mines
- Authors:
- M. S. Rodin
The article is devoted to the necessity of expansion of non-blasting methods’ utilization for breaking the kimberlitic oversize in underground conditions of De Beers’ mines. The advantages of hydraulic hammers as executive device of mobile rock breaker are shown. The optimal ratio between weights of hammer piston and operating tool is chosen and substantiated.
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Date submitted2008-09-18
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Date accepted2008-11-07
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Date published2009-03-01
Simulation modeling of the resonant electric drive of the reciprocating-rotating motion of the dynamically balanced drilling projectile on the load-carrying cable
- Authors:
- S. S. Staroded
Imitating modelling electromechanical oscillatory system of bacr-rotary movement with dry and equivalent viscous frictions is considered, the quantitative estimation of replacement of dry friction equivalent viscous is given at work of system on own frequency.
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Date submitted2008-09-19
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Date accepted2008-11-06
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Date published2009-03-01
Experimental studies of the parallel active filter operation modes in the networks of Orenburgneft
- Authors:
- Yu. A. Sychev
The industrial test of active filter «Electon FSA» was carried out in field distributive network of JSC «Orenburgneft» TNK-BP with nonlinear load. The structure and operation principle of shunt active filter «Electon FSA-400» is presented. The curve shape registration and magnitude measurements of field network voltage and current were made at different operation mode of nonlinear load and studying active filter. The analysis of experimental data, which had been got from results of industrial test, was made. In the base of experimental data processing and analysis, the effectiveness of shunt active filter application in distributive networks of oil and gas enterprises was proved.
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Date submitted2008-09-11
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Date accepted2008-11-11
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Date published2009-03-01
Influence of the high-frequency component of the shock impulse in the shock system "piston-bowl-rod" on the work of the modernized perforator PP54
- Authors:
- K. P. Talerov
- A. Ya. Burak
In article are stated theoretical and practical studies of «fluctuation» process in striking system «piston – striker – shank». Influences frequency pulse is touched upon the problem on increase of the resource of the crash tool.
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Date submitted2008-09-26
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Date accepted2008-11-05
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Date published2009-03-01
Possible way of diagnostics of cutters of roadheaders and shearers
- Authors:
- M. P. Talerov
In course of analysis was made a conclusion that tangential rotary cutters in most cases fell out in consequence of armor breakage, bared during wearing of holder. In this connection, was offered a way of cutters diagnostication, concluding in checking length of the bare part of hardalloyed rod in purpose of the well-timed change of weared out cutters and non-admission working machine in undesirable for itself conditions
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Date submitted2008-09-07
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Date accepted2008-11-20
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Date published2009-03-01
Consideration of drive motors properties in the model of vibrating jaw crusher with rigid and non-rigid fastening of axes of vibration exciters
- Authors:
- S. Yu. Tyagushev
The paper presents a computer model of an electro – mechanical system of the vibration jaw crusher. Taking into account an impact of electrical drive characteristic on the crusher operation modes which correlate with reported experimental data. The results of computer experiments have revealed frequency of the vibration jaw crusher mode.
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Date submitted2008-09-16
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Date accepted2008-11-24
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Date published2009-03-01
Comparative assessment of wear intensity of large-modular gears depending on lubrication conditions
- Authors:
- S. L. Ivanov
- A. S. Fokin
- A. A. Poddubnaya
Ways to raise service life of open tooth gearings on an example of a drive of a spherical mill are considered. Results of introduction of automatic system of greasing are resulted and increase ways efficiency of its uses are offered.
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Date submitted2008-09-01
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Date accepted2008-11-01
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Date published2009-03-01
Resonant electric drive of the reciprocating-rotational motion of a dynamically balanced drilling projectile on a load-carrying cable
- Authors:
- A. N. Fomenko
Mathematical and imitating models of electromechanical systems return-rotary movement are considered, results of imitating modelling in systems with dry and viscous frictions are resulted, the settlement scheme for dynamically counterbalanced chisel shell on cargo carrying cable is resulted.
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Date submitted2008-09-13
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Date accepted2008-11-24
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Date published2009-03-01
Application of fuzzy logic theories at compensation of higher harmonics by active filter
- Authors:
- A. P. Shevchuk
In this paper an actual problem – the reduction of line current harmonic is discussed with the example of fuzzy controlled APF design. This is the most perspective decision that make possible to reduce line current harmonic and to correct factor of sinusoidal view of line of voltage. Results of testing are corroborate the efficiency of APF.
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Date submitted2008-09-04
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Date accepted2008-11-24
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Date published2009-03-01
Comparative analysis of mill calculation methods and selection of their optimal ratio
- Authors:
- A. V. Alikin
At modern concentrating factories of 70 % of expenses of the electric power it is necessary on preparation of ore, and 2/3 these expenses fall on milling. Mills should provide demanded granulation of grinding at peak efficiency of crushing and minimally possible capacity on a drive. Therefore important correctly to choose a method for calculation of mills.
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Date submitted2008-09-11
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Date accepted2008-11-18
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Date published2009-03-01
Technological application of vibrating mills with horizontal chambers
- Authors:
- G. A. Balyan
Vibrating mills with horizontally disposed work chambers have a wide application at fine grinding of ores and industrial minerals, mechano-chemical processes, grinding of coal, metals and alloys, at recycling of industrial wastes etc. These not enough popular and completely studied possibilities of the vibrating mills with horizontal chambers could be implemented as industrial operating units in common conditions within typically used vibrations, for instance - frequency between 15 and 50 Hz and an amplitude - up to 6 mm. Application and laboratory batch tests on vibrogrinding for diverse materials are reviewed at the paper.
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Date submitted2008-09-11
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Date accepted2008-11-16
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Date published2009-03-01
Problems of autogenous processes in copper, nickel metallurgy and ways of their solution
- Authors:
- Yu. V. Berkutov
The article contains description of main problems which copper and nickel autogenic smelt[1]ing faces. Also methods to solve them are considered.
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Date submitted2008-09-21
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Date accepted2008-11-29
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Date published2009-03-01
Application of planning theory for the study of Vanyukov process
- Authors:
- N. V. Danilova
The approach to studying metallurgical processes by means of a method of planning of experiment is considered. With use 2 4 factorial plans are investigated influence of parameters of loading of furnace Vanjukov on concentration of copper in stein. As varied variables the stream of sulphidic materials, stream of fluxes and stream of technical oxygen were considered. As a result of processing skilled data the equation of regress is received. The model of Vanjukov process is constructed. Numerical Experiments were made on a method of Monte-Carlo. Аre revealed current control system shortcomings by process.
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Date submitted2008-09-12
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Date accepted2008-11-03
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Date published2009-03-01
Enrichment of fine and fine gold
- Authors:
- Diakite Mohammed L. L.
In connection with gradual reduction of reserves of gold-bearing ores, in processing ores with lower maintenance gold that leads to necessity to search for new ways of an intensification of processes of extraction of thin and small gold from ores start to be involved. One of such ways is an application of an ionic exchange which in a combination to cyanic process and other ways of enrichment allows to raise the general extraction of precious metals. These questions it is considered on an example of the concrete concentrating factory processing gold-bearing ores of deposit of Thumal (Mali).
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Date submitted2008-09-25
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Date accepted2008-11-18
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Date published2009-03-01
Influence of anion on the process of liquid extraction of cerium (III) by oleic acid
- Authors:
- D. S. Lutskyi
Experimental data on solvent extraction of cerium (III) by solutions of oleinic acids in odimethylbenzene was obtained. After mathematical analysis of the dependences of the distribution coefficient from pH and composition of organic and aqueous phases was determined the structure and composition of solvate complexes and value of the Gibbs free energies and reaction equilibrium constant.
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Date submitted2008-09-29
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Date accepted2008-11-23
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Date published2009-03-01
Side lining of aluminum electrolyzer from silicon carbide
- Authors:
- V. V. Napsikov
It’s offering replacement coal blocks of side potlining of electrolysis bath on silicon carbide slabs. Expediently to use silicon carbide blocks because they have the advantage of coal blocks: higher oxidation stability, higher real resistance, higher physical strength. Using these advantages in electrolysis baths renders possible: to reduce oxygen demand of side potlining surface; raise incorrodibility of side blocks on interracial metal-electrolytic conductor; to reduce saturation degree side blocks by fluorides from electrolytic conductor; to reduce current drain through the side potlining; to control skull degree growing superiorly. The result is following: increasing durability of electrolytic furnace without pot relining from 48 until 72 months.
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Date submitted2008-09-10
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Date accepted2008-11-28
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Date published2009-03-01
Research of self-milling process of diamond-containing ores
- Authors:
- N. V. Nikolaeva
Grinding circuit are projected for decrease size a material up to the size allowing at the following particle separation on this or that physical property to receive the best technological parameters. Their activity determines efficiency with which the crushing energy is transferred. It determines crushing energy of all repartition ore pretreatment. Process of crushing the most power[1]intensive and consequently it is usual most dear to typical concentrating factory. Now for modelling processes of enrichment including ore pretreatment, such predicting packages as JKSimMet are used, UniCrugr, etc.
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Date submitted2008-09-23
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Date accepted2008-11-10
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Date published2009-03-01
Modeling and automation of metallurgical slurry filtration process on press filters
- Authors:
- D. N. Safonov
One of the basic technological processes, which defines the affectivity of hydrometallurgical schemes of the non-ferrous metallurgical plants, chemical plants and concentrate-production plants is the filtration process of technological pulps and waste solutions. One of the most priority tasks today is the productivity improvement of filters. During the solving this problem the main attention will be pay for the intensification of filtration process. For example we need to direct the separation process with maximum speed and, also, to receive the satisfactory quality of product.
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Date submitted2008-09-23
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Date accepted2008-11-26
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Date published2009-03-01
Investigation of the regularities of electrochemical selenium extraction in the processing of copper electrolysis sludge
- Authors:
- A. A. Chernyshev
Now manufacturing of rare chalcogens and precious metals is realizing in processing of sulphidic polymetallic raw material, mainly from muds of copper and nickel electrolysis. In the article the possibility of selenium extraction from alkaline solutions, using electrolysis. Detachment of choosing pH of initial solution are made. Also you can find results of polarizing admeasurements of selenium extraction from selenite – biselenite solutions. The conclusions of possibility of selenium procurement, using electrolysis.
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Date submitted2008-09-15
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Date accepted2008-11-11
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Date published2009-03-01
On the extraction of germanium from alkaline solutions
- Authors:
- A. A. Chistyakov
Isotherms of sorption of 2- GeO 3 and 2- Zn(OH) 4 on a synthetic sorbent are received. The thermodynamic description of sorptionisotherms analogue of the Lengmjur equation is offered. Values limiting and seeming constants of sorption equilibrium, apparent constants and Gibbs energy of reaction. Selectivity of sorption on anionite in relation to germanium is shown.