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Date submitted2007-07-27
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Date accepted2007-09-24
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Date published2008-01-01
PB- and SR-isotopes – indicators for mixing processes in mine waters of the «Himmelfahrt Fundgrube»
- Authors:
- Heidel Claudia
Lead and Strontium isotope ratios in mine waters were investigated to pinpoint Pb and Sr sources and mixing processes of waters in the abandoned mine «Himmelfahrt Fundgrube» (Freiberg, Germany). Both Pb- and Sr-isotope compositions have shown the important role of gangue carbonates as an element source that could not be revealed by former oxygen and sulphur isotope studies.
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Date submitted2007-07-15
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Date accepted2007-09-15
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Date published2008-01-01
Features of engineering-geological surveys in areas of eluvial soil development (on the example of Nizhnekamsk)
- Authors:
- I. I. Nugmanov
A complex investigation of composition, physical and stress-and-strain properties of eluvial soils was carried out for the urban industrial zone of Nizhnekamsk. Dominating factors determining inhomogenity of the ground strata were revealed. Characteristics of eluvial soils formed on terrigenic (Nizhnekamsk) and carbonate (Kazan) Upper Permian sedimentary rocks were compared. Possible changes in properties of the eluvial grounds subjected to increasing industrial load were predicted.
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Date submitted2007-07-23
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Date accepted2007-09-03
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Date published2008-01-01
Wave principle of substantiation of the boundaries of hydrodynamic influence of geotechnical systems
- Authors:
- A. A. Lukin
The main goal of the investigation was to numerically determine and apply wave characteristics in a pressure-tight field in justification of the hydrodynamic influence limits in geotechnical systems. However, that research dealt with two problems: studies of wave processes and phenomena in water-pressure systems and justification of new material criteria and assessment techniques to estimate limits of hydrodynamic influence on interiors of a large variety of geotechnical systems (i.e. underground water intake structures, subsurface waste disposals, oil-and-gas fields, etc.). The following two tasks of the investigation were solved: computer simulation of harmonic low-frequency excitation of a pressure-tight hydrodynamic field from a single well (formulation and solution of the problem as experiment planning); modelling of a natural pressure-tight field in real conditions of non-uniform discontinuous industrial mode of pumping liquid wastes from a chemical plant.
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Date submitted2007-07-08
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Date accepted2007-09-28
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Date published2008-01-01
Study of possibilities of geophysical methods in connection with geological modeling of hydrocarbon deposits
- Authors:
- B. V. Belozerov
A detail analysis of existing geological modeling technologies is made and correlations between parameters in simulation of lithological-petrophysical, hydrodynamic and geophysical fluid systems are revealed. Optimal character and feasibility of basic modeling units – the hydraulic unit of the flow and the complex parameter – are noted. Causes of collectors heterogeneity are specified. The influence of shaliness, the type of the shale and the grain-size structure on the complex parameter is specified.
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Date submitted2007-07-30
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Date accepted2007-09-12
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Date published2008-01-01
Petrological characterization of montsogranites and granosigenites of the Ubukunskoye ore occurrence
- Authors:
- N. A. Grebenkin
- V. V. Suchkov
Granites with monzonitic structure and granosienites represent early and late phases of intrusion development. Crystallization of granites takes place with deanortitization of plagioclase and incongruent formation of К-Na-feldspar. Granosienites are characterized with cotectic crystallization. Changes in granosienites at the acid stage lead to albitization of the K-Na-feldspar, chloritization of biotite and large-scale development of pyrite with Cu, Cd, Zn, Pb impurities. The late alkaline stage is characterized with sedimentation of Ca as calci-spar.
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Date submitted2007-07-08
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Date accepted2007-09-05
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Date published2008-01-01
Hydrogeochemical conditions of the eastern slope of the Polar Urals
- Authors:
- N. V. Guseva
The article studies chemical composition of natural waters of the eastern slope of the Polar Urals. The balance condition of natural waters with rock-forming minerals is analyzed and geochemical types of waters are determined on its basis. Distribution of chemical elements in various geochemical types of water is considered. Changes in migration patterns depending on the environmental conditions are analyzed on the example of rare-earth elements.
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Date submitted2007-07-07
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Date accepted2007-09-17
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Date published2008-01-01
Geometrization of deposits with commercial hydrocarbon content in volcanogenic formations of triassic age based on the complex of geological and geophysical data
- Authors:
- E. V. Efimova
The work considers determination of geological and geophysical features that would allow determining areas with low and high development indices within deposits of volcanogenic trias. GIS data, data on contents of rare-earth elements in the rock and 3D seismic interpretation were used in the research.
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Date submitted2007-07-11
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Date accepted2007-09-09
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Date published2008-01-01
Causes of oil deposits zonality formation in carbonate reservoirs on the example of oil deposits in the south-east of the Republic of Tatarstan
- Authors:
- A. N. Kolchugin
Zonal structure of oil deposits in carbonate collectors is caused by the several reasons. The main ones are mineralogical and lithological heterogeneity of sedimentary rocks and physical and chemical evolution of deep streams in time. Good ability of carbonates to be exposed to transformations by secondary processes has allowed establishing general regularities in the sequence of the deposit formation.
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Date submitted2007-07-02
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Date accepted2007-09-24
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Date published2008-01-01
Prospects of the Upper Pechora Depression for oil and gas in Perm Krai
- Authors:
- S. N. Krivoshchekov
The Upper-Pechora Depression is a new object in prospecting for oil and gas in the Perm Region. This depression is located in the north of the Perm Region and only part of it lies in the region. The depression is poorly studied. Prospecting is carried out in reefs D3-C1 of t age and enveloping structures. There exist 4 revealed structures and 8 structures prepared for deep drilling on the territory of the depression.
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Date submitted2007-07-08
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Date accepted2007-09-05
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Date published2008-01-01
Modeling the solution gas drive process in heavy oils
- Authors:
- Mehdi Chraïbi
- Stéphane Zaleski
- Fabienne Franco
Primary heavy oil recovery relies on the Solution Gas Drive mechanism, which has been the object of many recent research efforts. Current models are unreliable, and it is likely that they do not represent important physical effects. Here, we introduce a Darcy scale model in which the relative permeability of the gas phase is replaced by a new expression for the gas phase velocity based on the relative strength of viscous, gravity and capillary effects.
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Date submitted2007-07-04
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Date accepted2007-09-11
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Date published2008-01-01
Removing cuttings from deviated and horizontal wells
- Authors:
- Sandoiu Gheorghe-Florin
Effective cuttings transport is critical in drilling production horizontal and extended reach wells. In these cases, failure to remove drill cuttings from the hole would lead to deposition and accumulation of cuttings in the annulus, resulting in stuck pipe, eccentric annulus and/or reduced penetration rate.
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Date submitted2007-07-24
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Date accepted2007-09-08
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Date published2008-01-01
Development and bench testing of sealing of high speed roller cone bits supports
- Authors:
- S. Yu. Baigareev
The construction is designed of the radial compaction with perfected springy characteristic. The compaction allows to use it drilling bit with two and more frictionless bearing. Laboratory tests have shown more low factors of the abrasion of the seal assembly than serial. The compaction can be used in the system of forced lubrication of the drill bit it will allow else more reduce the velocity of the abrasion and provide the working-off of bit under raised frequency of the rotation.
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Date submitted2007-07-17
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Date accepted2007-09-09
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Date published2008-01-01
Prevention of corrosion and salt deposition by inhibiting foam systems in wells of North-West Bashkortostan fields
- Authors:
- B. R. Gilmutdinov
At the late stage of Bashkortostan’s oil field development, well operation is accompanied by corrosion and salt accumulation in the underground equipment. The study of the elemental composition of accumulations and deposits conducted with the help of a «Mini Pal» energy-dispersion X-ray spectrometer allowed to define more accurately the mineral composition of precipitates. Conventional techniques of corrosion and salt accumulation control do not allow to effectively protecting the annular space of wells. A fundamentally new method of equipment protection has been designed and tested that consists in the injection of a corrosion and salt accumulation inhibiting composition in a foamed form in the annular space. Tests of the proposed technology conducted in Arlanskoe field allowed to establish the mechanisms of changes in corrosion rate after treatments and to work through the treatment technology. The carrying out of treatments provided the increase of the effective protection period by 2,3-2,9 times. The use of nitrogen as a foaming agent makes the technology commercially safe and pollution-free.
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Date submitted2007-07-13
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Date accepted2007-09-19
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Date published2008-01-01
Solution of problems of water flooding of high-viscosity oil deposits in carbonate reservoirs
- Authors:
- V. V. Mukhametshin
New methods based on the generalization of the experience of organization of water flooding of complex low productivity beds of high viscosity oil have been received making possible to solve problems of analysis, control, regulation and exploitation process designing using current oil field geology information.
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Date submitted2007-07-14
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Date accepted2007-09-10
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Date published2008-01-01
Investigation of the possibilities of water-gas influence on the reservoir using pump-ejector units
- Authors:
- D. I. Popov
It is known that currently flooding application is being considered as the most extended method for the layer pressure supporting in Russia and of cause around all over the world. But there are a lot of physical and chemical barriers for the high oil recovery achievement that are linked with interactive of «water-rock» system. The results of research of the new technology for water-gas injection realization with use the pumpinjector equipment are presented at this article
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Date submitted2007-07-29
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Date accepted2007-09-21
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Date published2008-01-01
Fluid flow into the well in the conditions of zonally inhomogeneous formation
- Authors:
- D. A. Shakirov
The effect of changes in filtration properties of the near-well producing zone (NWPZ) on the reservoir external boundary radius (r к ) and on the well production rate is considered. On the basis of analytical calculations it is demonstrated that the dimensions of the drained reservoir zone decrease with impairment of the NWPZ properties. Therefore, with due account of r к changes, the fluid inflow reduces to a less extent than without regard for r к changes.
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Date submitted2007-07-15
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Date accepted2007-09-13
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Date published2008-01-01
Development of technology for construction of sidetracks with horizontal sections under the condition of preservation of the old wellbore and existing production from it. Justification of economic feasibility of drilling of sidetracks with horizontal sect
- Authors:
- S. V. Gavrilov
The practice of new oil and gas field development often shows that the real oildrainage boundary is larger than supposed one. On account of this the special zones are fixed in the area of oil field that are not in the area of drainage usually. The similar situation is considered by the example of oil field in Western Siberia. It was suggested to develop the area of field that was not covered with well spacing by means of construction of two lateral branches with horizontal sections instead of four deviated wells to solve this problem. The drilling technology of lateral branches and technology of tailing-in are considered by stages. A review of equipment that is used in drilling of lateral branches and in completion of wells with branch holes is given. The economical expediency of project realization of lateral branches construction.
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Date submitted2007-07-15
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Date accepted2007-09-03
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Date published2008-01-01
Filtering hydrocyclone for drilling mud cleaning with filter sounding by running transverse ultrasonic waves
- Authors:
- L. V. Vukadinovich
Shakers and hydrocyclones are the most widespread for mud cleaning. A shaker disadvantage is low purification efficiency, that is it’s impossible to separate fine solid particles (sand, silt). But a hydrocyclone disadvantage is high mud loss - up to 5% per cleaning cycle. A combine use of the hydrocycloning effect and fluid filtration inside the hydrocyclone with ultrasonic influence on the filter element is suggested in this research to reduce such disadvantage.
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Date submitted2007-07-30
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Date accepted2007-09-04
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Date published2008-01-01
Justification of steam-thermal horizontal well location in bitumen reservoir on the basis of complex generalization of geological-geophysical, field and laboratory data on the example of Mordovo-Karmalskoye field
- Authors:
- D. A. Dautov
The laboratory researches’ results of Mordovo-Karmalskoye oil-field’s bitumens’ optical properties, collectors’ heat conductivity’s data, statistical processing results of laboratory and factory are analyzed. The influence of conditions of thermal affects and heat conductivity of collectors on the optical properties of extracted bitumens are investigated. Correlation interrelations of bitumens’ optical properties with temperature conditions of their development, thermal and capacitance-fluid properties of collectors and typification of bitumens on optical properties are revealed. Recommendations on thermal affect’s perfection are given.
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Date submitted2007-07-13
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Date accepted2007-09-11
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Date published2008-01-01
Waterproofing compound for limiting water inflow into producing oil wells
Hydrophobic organic gel for technologies of the limitation of water production in oil wells is designed. The dependency of gel efficiency and rheological properties of waterproofing on gel basis on components relations and their concentration in hydrocarbon solvent is researched. Waterproofing influence on silica sand wettability and water relative permeability of reservoir model is researched.
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Date submitted2007-07-05
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Date accepted2007-09-11
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Date published2008-01-01
Investigation of development system variants with ore and host rock collapse by computer modeling
- Authors:
- A. M. Gildeev
This work studies various methods of mining with ore and gangue rock caving with application of computer simulation using the AutoCAD software package. Regularities in indices of completeness and quality of ore extraction under the caved rocks have been determined.
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Date submitted2007-07-15
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Date accepted2007-09-24
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Date published2008-01-01
Research of properties of building materials modified by hydrophobic additives on the basis of peat
- Authors:
- E. Yu. Isaeva
The basic principles in production of peat-based waterproofing agents are considered. These agents used to enhance properties of construction materials. Application of the hydrophobization method allows at least two-fold reduction of water absorption by construction materials without deterioration of their strength properties.
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Date submitted2007-07-29
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Date accepted2007-09-25
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Date published2008-01-01
Possibilities of computer modeling of mining works
- Authors:
- S. Pessler
- K. Drebenshtedt
One of the key elements enhancing performance and efficiency characteristics of excavating machines as well as reducing costs is a high degree of automation and introduction of computerized systems to collect, analyze data and plan technological parameters of mining. The article reveals possibilities to optimize mining planning and production with application of computer simulation.
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Date submitted2007-07-11
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Date accepted2007-09-23
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Date published2008-01-01
Investigations of character of manifestation of mountain pressure in various mining-geological conditions
- Authors:
- A. V. Rogachkov
The article analyzes ways to decrease the influence of rock pressure by means of anticipatory weakening of roof rocks, as well as application of technical solutions to choose rational parameters of protective pillars, mounting and enhancement of mine working support.
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Date submitted2007-07-29
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Date accepted2007-09-10
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Date published2008-01-01
Technological solutions and substantiation of geomechanical parameters of open-underground method of coal deposits development
- Authors:
- V. V. Senkus
The paper publishes the design results of two variants of combined underground and surface coal mining, as well as the program and methodology of geomechanical support of combined coal mining.
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Date submitted2007-07-20
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Date accepted2007-09-10
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Date published2008-01-01
Experimental evaluation of the influence of pulse electromagnetic treatment of ferruginous quartzites for the purpose of their de-strengthening before grinding
- Authors:
- E. A. Fedotov
The goal of this research was to develop scientifically justified recommendations on weakening of ferriferous quartzite grains to decrease power consumption during their disintegration, to enhance the efficiency of ore-grain release and the concentrate output and quality, as well as to reduce losses of iron in mill tailings. A method to assess the influence of impulse electromagnetic treatment of ferriferous quartzites on the effectiveness their impact fracture is analyzed.
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Date submitted2007-07-11
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Date accepted2007-09-20
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Date published2008-01-01
Analytical method of determining the overburden exploitation factor by means of the graph of its minimum current volumes
- Authors:
- M. P. Bukasa
The work is devoted to the analytical method of solving the problem of stabilization of quarry productivity. The dependence of the average operating stripping ratio on the duration of the operational period of the open pit activity is established. Practical calculations are presented for one of the diamond kimberlite pipes of the Democratic Republic of Congo and were performed on the basis of AutoCAD 2006 and Microsoft Excel.
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Date submitted2007-07-27
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Date accepted2007-09-07
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Date published2008-01-01
Slope stabilisation method on S7 «Zakopianka» road case
- Authors:
- Michal Godzinski
- Paluch Lukasz
Modernization of the Zakopianka Road is probably the most expected investment in Southern Poland. Some problems occurred during the construction stage connected with protection of slopes from failure at the pre-planned highway location. This problem resulted from a relatively small amount of investment and lack of soil stabilization plans in the original construction design. Various slope reinforcing methods for the Myślenice – Pcim highway section are presented in the paper. The results of calculations with Finite Difference Method (FDM) and Limit Equilibrium Method (LEM) are presented as well.
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Date submitted2007-07-10
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Date accepted2007-09-07
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Date published2008-01-01
Determination of accuracy of a combined system of tachymeter and echo-sounder and suggestions of improvement
- Authors:
- Britta Lickfett
- Friedrich Partmann
The coastal measuring equipment is a combined system of tachymeter and an echo sounder. It is used for description of the surface of the seabed. The quality and possibilities of detection with this system can be determined through different tests.
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Date submitted2007-07-30
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Date accepted2007-09-12
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Date published2008-01-01
Management of underground issues in France using probabilistic methods
- Authors:
- Maxime Cauvin
As many other European countries, France has now to manage the “post-mining” phase, rather than mining activity as such. This paper focuses on presenting some post-mining issues and on discussing several improvements and benefits that probabilistic methods may bring to the management of problems related to a post-mining activity.
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Date submitted2007-07-28
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Date accepted2007-09-08
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Date published2008-01-01
Development and application of 3D-model of the territory for making optimal management decisions
- Authors:
- I. V. Ilinykh
The paper summarizes two years of experience in developing a three-dimensional model of Tyumen city. The methodology of three-dimensional modeling of large territories using modern information resources is considered.
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Date submitted2007-07-21
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Date accepted2007-09-02
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Date published2008-01-01
Estimation of stability of the cavern for gas storage taking into account salt rheology
- Authors:
- D. V. Shustov
Issues of stability of underground constructions for gas storing in salt caverns are reviewed in the article as well as the influence of the walls excavation convergence on the surface studied with application of the mathematical modelling method. Feasibility study of geomechanical aspects of the project has been carried out basing on the calculation results.
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Date submitted2007-07-20
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Date accepted2007-09-18
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Date published2008-01-01
Reduction of greenhouse gas emissions in the district heating system of Vyborg
Ratification of the Kyoto Protocol makes it possible to use the reduction of greenhouse gas emissions in Russia on a financial basis. This can contribute to a significant improvement of heat supply systems in cities. In the city of Vyborg it is rational to reconstruct transmission and distribution networks, install individual substations and improve the energy efficiency of buildings.
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Date submitted2007-07-07
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Date accepted2007-09-22
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Date published2008-01-01
The database of wastes and waste incineration optimization
- Authors:
- Fiedor Jiri
- Obroucka Karel
This paper deals with the determination of fundamental thermochemical properties of combined industrial waste and individual components of household waste. The values of these parameters significantly influence the course of the incineration process. The aim of the study is to create a basis for the possibility of energy menu development for incinerators and thus to widely popularize energy production from waste.
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Date submitted2007-07-04
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Date accepted2007-09-24
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Date published2008-01-01
Some topics on using ultrasonic method for concrete casting level measurement in bored pile foundation
- Authors:
- Lan Kai
- Yan Taining
- Shao Chun
With the rapid growth of China's economy, bored piles are widely used in infrastructure construction projects. But how to get the exact surface of the poured concrete is a difficult problem in quality control of bored piles. In practice, the only way to avoid quality problems is to pour a larger volume of concrete, which results in more waste and creates more burden on the environment due to the discarded concrete columns. Therefore, the development of an ultrasonic device to measure the concrete pouring level is highly relevant. Based on the analysis of the negative consequences of pouring too much concrete, the paper presents the design scheme of the device, summarizes the main difficulties and summarizes the results of our group.
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Date submitted2007-07-30
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Date accepted2007-09-26
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Date published2008-01-01
Development of the automated system of maintenance of pumping modes of oil pumping stations, providing energy resources saving, on the basis of wireless technologies
- Authors:
- V. A. Baturin
The article analyzes controlling system of the “Kovali-3” oil booster station. A number of drawbacks have been detected in the equipment, the system itself and the operating principle. An automated pump controlling system based on frequency-controlled electric drive is offered to upgrade the oil booster station. The algorithm of the system peration is described, which is based on the situation management principle. The paper offers a brief analysis of the possibility to use wireless channels for data transmission within the oil booster station and at higher hierarchical levels.
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Date submitted2007-07-18
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Date accepted2007-09-28
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Date published2008-01-01
Application of the system of recovery of light fractions of hydrocarbons at loading into railway tank cars
- Authors:
- O. V. Kozachok
Measures to reduce losses of oil and petroleum products during their transportation and storage are analyzed. The article considers the introduction of a method of sealing the loading of vehicles with the use of installation for the capture and recovery of light hydrocarbon fractions. The basic principles of its operation, technical characteristics and advantages are described.
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Date submitted2007-07-27
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Date accepted2007-09-29
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Date published2008-01-01
Hydrified tunneling complex for hard rocks
- Authors:
- M. V. Kucherenko
- A. A. Kucherenko
The article provides justification of the choice of mining tunneling equipment for construction of roadway in hard rocks with the use of hydraulic over loader with wedge conveying elements. High efficiency of the equipment in comparison with known analogs on the basis of modeling of its operation is shown.
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Date submitted2007-07-21
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Date accepted2007-09-01
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Date published2008-01-01
Energy saving compensated asynchronous motors and electric drives on their basis
- Authors:
- A. R. Mugalimova
The conventional induction motors have electrical efficiency η.=0.85÷0.94, cosφ=0.7÷0.85 and energy efficiency η en =η n cosφ n =0.6÷0.8. The proposed energy compensated induction motors are characterized by higher energy efficiency η n =0.85÷0.94, cosφ n =1.0, η en =η n cosφ n =0.85÷0.94.
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Date submitted2007-07-26
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Date accepted2007-09-07
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Date published2008-01-01
Investigation of dynamic loads of frame structures of peat machines
- Authors:
- A. N. Pavlov
The movement of peat machines is complicated by the presence of unevenness in the form of bumps and stumps, high moisture content of the deposit in some areas and, finally, deformability of the peat deposit. All this significantly worsens the passability of peat machines in comparison with machines moving on flat hard ground. The purpose of the tests is to select the most rational frame variant in terms of its durability, minimum weight and manufacturability of construction.
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Date submitted2007-07-04
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Date accepted2007-09-03
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Date published2008-01-01
Hydromechanical power plant of a quarry drilling machine
- Authors:
- S. A. Semova
A basic diagram of mechanisms of the hydraulically driven drilling rig developed at the Moscow State Mining Institute is presented, which secures necessary power and velocity parameters of the chisel, minimal sizes and weight, a high starting torque and efficiency, an efficient overload protection, a possibility of automated control, convenience in maintenance and repair as well as safe and comfortable operating condition.
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Date submitted2007-07-02
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Date accepted2007-09-24
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Date published2008-01-01
Development of the traction electric drive of the trolley transportation for the open-cast mining works
- Authors:
- V. A. Cherepanov
The Institute of Mining Practice of the Ural Branch of the Russian Academy of Sciences together with the Ural State Mining Institute is developing and trying to introduce a new type of wagon-trolley at mining enterprises in Russia and CIS countries. This paper considers the basic requirements and the most acceptable, in our opinion, designs of the traction electric drive of the wagon, which can be briefly described as follows: supply network - frequency converter (consisting of completely uncontrolled IGBT or IGCT modules implemented by Direct Torque and Flux Control algorithm) - commutatorless traction motor.
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Date submitted2007-07-29
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Date accepted2007-09-21
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Date published2008-01-01
Thermomechanical rolling of wire rod with superior properties
- Authors:
- Sebastian Waengler
- Rudolf Kawalla
Long products are one of the most important products of the global metallurgy industry. Rising prices for energy and raw materials, as well as strict legislative regulation make it necessary to improve mechanical properties and reduce energy consumption during production. Thermomechanical rolling is a promising approach to meet consumer requirements for improving mechanical properties and reducing energy consumption.
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Date submitted2007-07-17
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Date accepted2007-09-30
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Date published2008-01-01
Recovery of manganese from mixed metal solutions by solvent extraction with organophosphorus acid extractants
- Authors:
- Pakarinen Jouni T.
- Paatero Erkki Y.O.
Di(2-ethylhexyl) phosphoric acid (D2EHPA) and bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex272 manufactured by Cytec, USA) were used to extract manganese from sulfuric acid solutions containing Co, Mg, Ca and Na. Cyanex272 was found to have slightly higher selectivity towards manganese than D2EHPA. In addition, it was found that an increase in temperature had a negative effect on the selectivity for Mn.
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Date submitted2007-07-26
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Date accepted2007-09-28
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Date published2008-01-01
Determination of hafnium in zirconium compounds using flame atomic absorption spectrometry (FAAS)
- Authors:
- Agata Jakóbik – Kolon
- Marek Smolik
- Ewa Miodek
The optimum conditions for determination of hafnium in zirconium matrix by FAAS were established (1% HF, 0,1% Al, max. 1% ZrOCl2). The effect of various inorganic acids (HF, HCl, HClO4, HNO3, H2SO4), as well as influence of comparable amounts of Fe, Ca and Mg on the Hf signal was also studied. ICP-AES was used as comparative method.
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Date submitted2007-07-20
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Date accepted2007-09-21
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Date published2008-01-01
Technology of fabrication in relation to microstructure of Ni-Ti shape memory alloys
- Authors:
- I. Szurman
- M. Kursa
This article deals with the production of shape memory Ni-Ti alloys in a plasma furnace and a vacuum induction furnace. Flattening and drawing were then carried out to produce wires that will be used to measure transformation temperatures.
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Date submitted2007-07-23
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Date accepted2007-09-19
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Date published2008-01-01
Development of flotation technology of metallurgical sludge processing
- Authors:
- O. G. Efremova
Many metallurgical enterprises in Russia are experiencing difficulties with raw material supply. One of the ways to solve this problem is the use of secondary resources, in particular, metallurgical tailings. Since these tailings are characterized by high zinc content, which negatively affects the operation of blast furnaces, the study is devoted to the development of technology for zinc removal from tailings.
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Date submitted2007-07-24
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Date accepted2007-09-02
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Date published2008-01-01
Development of device structure for detection of metal objects in ore
- Authors:
- A. M. Kurchukov
The purpose of this work is to improve the reliability of devices for the detection of metal impurities in the production line of technological raw materials using eddy current self-sustained sensors. An effective way to increase their reliability is to increase the ratio between useful signal and background noise in the conversion signal channel of the device. This ratio can be increased by developing an optimal device structure. The device structure is designed using the method of optimal matched filtering of signals from background noise.
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Date submitted2007-07-18
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Date accepted2007-09-13
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Date published2008-01-01
Research of dependence of viscosity of electrolyte viscosity of electrolyte of copper refining production on its composition and temperature
- Authors:
- I. S. Kuzmina
The values of dynamic viscosity of copper-nickel sulfate solution with boundary parameters Cu 2+ -50-60 g/dm 3 , Ni 2+ -20-25 g/dm 3 , H 2 SO 4 -140-180 g/dm 3 in the temperature range of 50-70° have been determined. A simplified equation for analyzing the viscosity of the solution depending on its composition and temperature is proposed. Technological graphs of solution viscosity simplifying its determination are given.
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Date submitted2007-07-20
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Date accepted2007-09-29
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Date published2008-01-01
Development of technology of tungsten wire production for light sources with the use of blue tungsten oxide as an intermediate product
- Authors:
- S. I. Lyakh
The work reveals types of technological regimes to produce blue tungsten oxide - an intermediate compound in tungsten powder production, which is used in manufacturing of tungsten wires for the electrical engineering industry. A technology of blue tungsten oxide production developed on the basis of this research was tested at the industriasl scale and introduced at the Novosibirsk Electrovacuum Plant.
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Date submitted2007-07-14
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Date accepted2007-09-16
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Date published2008-01-01
Extraction of noble metals from slags of metallurgical production
- Authors:
- K. E. Ananenko
The paper presents results of laboratory tests in upgrading metallurgic slag. Staged upgrading schemes have been designed with application of high-tension separators, jigs washers and flotation machines, sluices, concentration tables, and the Itomack centrifugal separator. As the result, two upgrading schemes - dry and wet - are suggested.
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Date submitted2007-07-10
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Date accepted2007-09-20
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Date published2008-01-01
Application of risk assessment concept in Estonian mining industry
The paper deals with the problems of risk assessment in Estonian oil shale mines, where room-and-pillar mining with blasting is applied. This paper examines the risks associated with the application of a new room-and-pillar mining technology using modern machines at the Estonia mine. The new mining technology is based on the transition from packet blasting to emulsion blasting, from 2.0 m boreholes to 4.0 m boreholes (ATLAS Copco machine) and on a new undercutting method (SMAG machine). With this equipment with the new technique, the advancement speed at the entrance reached 4 m. As a result of this increase in advancement speed, situations with unsupported room lengths of up to 5.5 m can be expected with a decrease in the stability of the immediate roof. Various factors relevant for Estonian oil shale mines have been identified. The study showed that the probability and consequences of the risk are acceptable. The used concept of the risk assessment method is applicable to Estonian oil shale mines. It can be used for different purposes and levels. The results of the risk assessment are of particular interest for practical purposes.
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Date submitted2007-07-06
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Date accepted2007-09-23
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Date published2008-01-01
Large scale investments in Russia’s infrastructure and natural resources sector
- Authors:
- Thomas Schumann
Russia has a significant need for large-scale investment in infrastructure and natural resource extraction. It is generally accepted that these needs can only be met through foreign direct investment (FDI). Without an inflow of capital and know-how, Russia will miss chances to grow its entire economy and lose export revenues. This article pays special attention to the conditions for attracting large-scale FDI, which today is increasingly realized through the creation of project finance structures.
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Date submitted2007-07-29
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Date accepted2007-09-26
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Date published2008-01-01
Economic added value as a tool of company management
- Authors:
- S. G. Galevskii
The Economic Value Added (EVA) financial index and indices derived from it are considered in the article. Computational procedures of the EVA and interpretation of its different values are given. Besides, areas of its application such as company’s management, business cost estimation and staff motivation are considered. Index application is demonstrated by the example of the West-Siberian Metallurgical Plant.
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Date submitted2007-07-09
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Date accepted2007-09-29
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Date published2008-01-01
Economic evaluation of labor potential use efficiency in coal-mining region
- Authors:
- I. A. Getmanova
The article considers socio-economic problems arising from the restructuring of the coal mining industry. The methods of determining the cost estimates of labor potential of the coal mining region on the basis of calculating the professional index of a person are given. The algorithm for calculating the efficiency of labor potential use, as well as the calculation of cumulative environmental and economic effect due to the increase in labor potential as a result of employment of people previously not employed in coal-mining regions is proposed.
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Date submitted2007-07-18
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Date accepted2007-09-06
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Date published2008-01-01
Formation of the program on oil production intensification
- Authors:
- A. E. Novoselova
The main trends in the development of oil-gas production in Russia are described in the paper. Theoretical and methodological provisions in development of the program to intensify oil production are offered as a factor of rational use of production capabilities in the oil sector.
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Date submitted2007-07-01
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Date accepted2007-09-03
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Date published2008-01-01
Economic results of variants of development and oil production in the North-West region of Russia
- Authors:
- A. E. Cherepovitsyn
- L. S. Sinkov
The levels of crude oil production by different variants taking into account modern state of geological prospecting and based on data of research institutes and oil company are forecasted. The predictions of oil production by each of variant are based on. Economic indexes of reserves development and oil production are determined. Comparative economic characteristics of alternative oil production forecast by such indicators as investments, net present value, state capitalized value, profitability index are calculated. Economical advisability of oil reserves development by fixed forecasting oil reproduction and production and taking into account present tax structure are determined.
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Date submitted2007-07-09
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Date accepted2007-09-27
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Date published2008-01-01
Economic estimation of priority direction of natural gas resources development in the North-West region of Russia
- Authors:
- A. E. Cherepovitsyn
Priority direction of gas industry development in the North-West District is first commercial production of Shtokman gas condensate field with export to North America and West Europe. The levels of gas production take into account alternative export by means LNG and pipeline systems are determined. Economic results under such conditions that natural gas market price equal 240 $ per 1000 cubic meters are calculated. Economic indicators such as investments, net present value, state capitalized value, profitability index are calculated. First of all economic efficiency is defining the possibility of LNG.
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Date submitted2007-07-12
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Date accepted2007-09-04
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Date published2008-01-01
Stimulation of investment attractiveness of environmental impact by methods of tax regulation
- Authors:
- T. A. Shelyakina
Payments for environmental pollution are proposed to be increased to optimal market levels that attract investment in environmental facilities, with a simultaneous reduction in income tax.
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Date submitted2007-07-03
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Date accepted2007-09-01
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Date published2008-01-01
Assessment of financial stability of LLC Peterburgteploenergo
- Authors:
- I. I. Kashtanova
In work the basic problems of one of branches of a fuel and energy complex – heat supplies are considered. The analysis of activity of the enterprise, its participation in fuel and energy projects of city of St.-Petersburg is given. The technological and organizational-administrative decisions directed on increase of efficiency and reliability of functioning of «Peterburgteploenergo Ltd.» are scientifically proved, factors of financial stability are certain.
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Date submitted2007-07-07
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Date accepted2007-09-22
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Date published2008-01-01
Role and value of business reputation in the assets of the company
- Authors:
- A. A. Sarafanova
- E. V. Khit
The article analyses correlation of the term «business reputation» used in Russian accounting with its analogues used internationally. It defines the notions of aims and reasons of appreciating business reputation of a modern company.
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Date submitted2007-07-26
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Date accepted2007-09-15
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Date published2008-01-01
To the estimation of economic efficiency of innovations at mining enterprises on the basis of the developed mathematical model
- Authors:
- E. A. Nikolaenkova
- V. A. Fedoseev
The problems connected with quantity and quality evaluation of the economical efficiency of iinnovations in the mining industry are considered in the paper. The essence of «novelty» for example for working ore mill is detailed. Changing key parameters of the technological process, which are not directly connected with «novelty» leads to necessity of making a three-factor (twofactor) mathematical model.
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Date submitted2007-07-18
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Date accepted2007-09-08
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Date published2008-01-01
Biodegradation of PAHs, PCBs and PHC in sediments from the manmade water course of Černý příkop in the municipal territory of the Ostrava city (Czech republic)
The paper deals with biodegradation of polycyclic aromatic hydrocarbons, polychlorinated biphenyls and petroleum hydrocarbons in sediment samples from Černí Pršíkop. Bottom sediments from Černí Pršíkop represent a significant environmental load on the territory of the city of Ostrava, they are contaminated with a wide range of organic substances. Standard pure bacterial cultures of Pseudomonas putidaa Rhodococcus sp. were used for biodegradation. The data obtained should be in accordance with the data specified in Act N°294/2005 Coll. on the conditions for land filling and surface utilization of waste.
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Date submitted2007-07-11
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Date accepted2007-09-25
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Date published2008-01-01
Experimental researches for the reduction of the noxes during the burning of pit coal from Jiu Valley – Romania
- Authors:
- Ciolea Daniela Ionela
The paper summarizes the results of measurements made on a pilot liquefied bed combustion plant used in a pilot activity while operating on mine coal in the Ju Valley. Flue gas desulphurization and overall flue gas cleaning has become a major concern for many users of combustion plants with pollutant emissions in the last quarter of the century.
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Date submitted2007-07-30
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Date accepted2007-09-09
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Date published2008-01-01
Microbial surfactants and rhodococcus – facts and possibilities
- Authors:
- Susanne Niescher
The paper describes possible applications of surfactants of microbial origin (Rhodococcusbiosurfactants) for hydrocarbon neutralization.
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Date submitted2007-07-26
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Date accepted2007-09-30
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Date published2008-01-01
Analysis of oil sludge using amperometric ion-selective electrodes
- Authors:
- K. O. Kunakov
- M. V. Kryuchkov
The article offers a new technique to analyze composition of oil muds and describes basic principles of this technique.
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Date submitted2007-07-09
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Date accepted2007-09-02
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Date published2008-01-01
Integrated monitoring of the impact of Severonickel Combine on the natural environment
- Authors:
- M. V. Parshina
- D. S. Korelskii
The research presented at paper carried out in area of Monchegorsk and directed on definition of mechanisms and an estimation of infringement and pollution level of an environment during industrial activity of factory «Severonikel». Results of research of transformation degree and migration probability of polluting components from waste on the open area solid wastes storage due to hypergenic processes are presented. Тhe high acid potential of solid wastes is proved and it at rather small volumes infiltration waters causes significant damage to the superficial waters because of global issue. Damaged water is an unique source of drinking water supply in area of Monchegorsk. Also in work the system of monitoring and an estimation of a soil-vegetative cover condition in forest ecosystems impacted by factory «Severonikel» is offered.
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Date submitted2007-07-27
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Date accepted2007-09-11
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Date published2008-01-01
Analysis of ecological situation in the zone of influence of the large cement plant and technical solution for its improvement
- Authors:
- N. N. Safarova
- Yu. P. Sorokin
In given clause the analysis of an ecological situation in a zone of influence of cement works is made, and also the technical decision on its improvement is offered. Development of deposit marl in the open way renders adverse influence on vegetative and fauna. The woods which are being with a factory special nature protection, sanitary-and-hygienic, antierosion and soil-protective functions, but the main function carry out ability of clarification of atmospheric air from a dust, gases and others polluting. The special place is given to the main problem rekultivation the broken grounds. Rekultivation territories careers becomes complicated presence of a complex relief, absence of a vegetative ground and fresh water, weak security and other resources. Special difficulty is represented with restoration of vegetation on abrupt slopes, high multistage careers.
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Date submitted2007-07-17
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Date accepted2007-09-18
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Date published2008-01-01
Use of long-lived solidifying foams for protection of working spaces from dust and gas explosions
- Authors:
- Yu. D. Smirnov
Mining is closely connected with the impact of mankind on the environment for the purpose of supply with primary resources. In SPMI laboratory under the direction of prof. Y. V. Shuvalov series of measures aimed at protection of environment from harmful impact of technological processes during open-cast mining and underground operation of coal, which is nowadays the most popular power resource are carried out. In future coal will be one of the main resource, as it’s supply may satisfy the needs of all branches of industry for a long period. These researches were done with support from Saint-Petersburg Government, US CRDF, RF Ministry of Education and Science and REC-015 at SPMI, Russia.
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Date submitted2007-07-02
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Date accepted2007-09-27
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Date published2008-01-01
Assessment and reduction of technogenic load in the zone of influence of oilfields of LLC RN-YUGANSKNEFTEGAZ
- Authors:
- M. V. Kozhevnikova
The aim of research: an assessment of technogenic changes of components of the natural environment in the impact zone of petrocrafts. Research problems: revealing technogenic transformations to the natural environment in the zone of direct technogenic influences (DTI) and outside of it; an assessment of technogenic variability of geosystems; development of protection of an environment actions on decrease technogenic loadings. The results of researches: the estimation of a condition of components of the natural environment in the impact zone of petrocrafts for the first time carried out; modelling emergency flood of oil carried out.
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Date submitted2007-07-21
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Date accepted2007-09-20
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Date published2008-01-01
Mechanism of pollution of soil and vegetation cover in the zone of influence of enterprises of aluminum industry
- Authors:
- M. A. Kulikova
Effect of metallurgy enterprises at a soil-vegetable cover grows up every year. As the result the soil fertility falls, heavy metals pollute the soil cover etc. Emissions are the central source of heavy metals hitting on the soil cover. Heavy metals hit into the soil with atmospheric precipitation and accumulate there. Litochemical areas form so. The aim of our researches is implementing of the soil-vegetable monitoring in a zone of influence of enterprise «Sevuralboksitruda» while the ecological department of enterprise doesn’t realize a real control.
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Date submitted2007-07-06
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Date accepted2007-09-20
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Date published2008-01-01
Monitoring and development of methods of oil sludge pits reclamation
- Authors:
- M. M. Malyshkin
- M. A. Pashkevich
One of the largest environmental problems of the oil industry in Russia is drilling waste contamination, that has negative impact on the living conditions of the people, animals and plants. Drill return sumps are pits on the territory of drilling sites, filled with drilling waste. The problem of drill return sumps recultivation can be solved using the local tree crops and drilling wastage skillfully employed as growth-stimulating substance alongside with drill return sumps amelioration. This gives us a possibility of developing of a conceptually new scientific and methodical base of forest recultivation on the disturbed lands.