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Date submitted2013-07-23
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Date accepted2013-09-04
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Date published2014-01-01
Status and development of mining and enrichment of rare earth metals in Russia
- Authors:
- M. N. Andreev
This article analyzes and summarizes the current state of production and enrichment of rare earth resources in Russia, and provides prospects for the mining industry. The necessity of finding new deposits and intensify mining rare earth materials is formulated. Provides information about the production of rare earth metals in the world, analyzed data on volumes of processing and marketing of the resource. The main problems arising in this area are identified.
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Date submitted2013-07-20
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Date accepted2013-09-20
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Date published2014-01-01
Interchamber pillars partial working off technology at the floor-and-chamber system of development of the korobkovsky deposit of KMA
- Authors:
- E. I. Boguslavskii
- M. N. Andreev
Article is devoted to a choice of rational technology of mining of part of stocks interchamber pillars at floor-and-chamber system of development of the Korobkovsky deposit of KMA. Authors carried out calculations and comparison of technical and economic parameters of two offered technologies of mining: horizontal layers with a stowing in an ascending order with application of a portable equipment and horizontal layers with a stowing in an ascending order with a driving of autobiases in interpanel pillars. For a choice of method of development for mining of part of interchamber pillar and determination of its parameters and indicators.
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Date submitted2013-07-29
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Date accepted2013-09-24
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Date published2014-01-01
Physical modeling of interchamber pillars fixity in Gubkin mine
Procedure of Korobkovsky iron-ore deposit new levels mining with the usage of physical modeling has been determined. Evaluation of interchamber pillars fixity in Gubkin mine and soil surface deformation in the process of lift mining and fractional interchamber pillars robbing on three levels has been carried out. After conducting geomechanical research the decision of foremost development and mining of bottom level reserve between –125 m / –250 m has been made.
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Date submitted2013-07-27
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Date accepted2013-09-30
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Date published2014-01-01
Influence of disjunctive dislocations on parameters of secure zones on flat-lying adjacent coal seams
- Authors:
- V. P. Zubov
- E. R. Kovalskii
- A. V. Nikiforov
The article focuses influence of disjunctive dislocations on parameters of secure zones on flat-lying adjacent coal seams is considered.
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Date submitted2013-07-16
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Date accepted2013-09-16
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Date published2014-01-01
Stopes walls stabilization at the rich iron ore mining by the flat-back cut-and-fill method
- Authors:
- V. P. Zubov
- M. D. Morozov
- A. S. Malyutin
The most influencing the stopes walls stability factors have been determined. Physical-and-mechanical ore mass properties impact to the stopes height has been researched. Advanced ways to improve stopes walls stability have been considered.
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Date submitted2013-07-26
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Date accepted2013-09-22
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Date published2014-01-01
Parameters of removing the overburden for deposits complex structure of carbonate rocks
- Authors:
- V. V. Ivanov
The main features of the development of Open-complex structure of carbonate rocks. The dependence for the determination of dozing on the domestic heap career, moving overburden on bestransportnoy scheme in goaf. Found that the optimum length of excavator block executed by one parking dragline at quarries carbonate rocks is achieved with the minimum total cost of doing the work of overburden and waste associated with the removal of the overburden.
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Date submitted2013-07-25
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Date accepted2013-09-29
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Date published2014-01-01
Assessment of the longwall face length influence on gas emission at longwall panels of the OJSC «Vorkutaugol» coal mines
- Authors:
- O. I. Kazanin
- A. M. Sufiyarov
Results of researches of the longwall face length influence on gas emission at the coal seam «Chetverty» longwall panels of the OJSC «Vorkutaugol» mines are given. Dependences of the longwall production and longwall face length are specified. Range of rational values of the longwall face length according to the gas emission control efficiency is determined.
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Date submitted2013-07-16
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Date accepted2013-09-21
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Date published2014-01-01
Gas emission control parameters determination for sublevel caving mining systems at the «Kiselevskaya» coal mine
- Authors:
- O. I. Kazanin
- A. A. Sidorenko
- V. V. Sementsov
The results of the aero- and gas-dynamics processes numerical researches for the sublevel caving mining system with mechanized roof support in conditions of «Kiselevskaya» coal mine are given in the article. It is shown, that reliable and effective panel ventilation is provided with the technological scheme with three entries at the each sublevel. The parameters of the technological scheme are determined.
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Date submitted2013-07-05
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Date accepted2013-09-16
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Date published2014-01-01
Prospects of improving technology for development of coalseams in Vietnam’s undergroundmines
- Authors:
- Kao Kuok Vet
- V. P. Zubov
In the article the problem associated with the necessity of application of the full goaf stowing technology in developing the steep coal seams in terms of Mao Khe deposit in Vietnam is presented.
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Date submitted2013-07-07
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Date accepted2013-09-17
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Date published2014-01-01
Ways of improving waste disposal in the workings of salt mines
- Authors:
- O. V. Kovalev
- S. P. Mozer
Address the major aspects of waste disposal in underground space. Are key problems of isolation of wastes in underground salt deposits? Proposed waste disposal technology, based on the use of waste for immobilization of natural mineral salts.
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Date submitted2013-07-20
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Date accepted2013-09-04
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Date published2014-01-01
Some approaches to secure mining of potash deposits
- Authors:
- O. V. Kovalev
- S. P. Mozer
The basic aspects of safe mining of potash deposits is reviewed. Practical examples of the mechanism and possible consequences of violating the integrity of the waterproof rock strata are described. Use of remote non-destructive monitoring system for non-destructive integrity breeds of the waterproof rock strata is proposed.
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Date submitted2013-07-18
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Date accepted2013-09-02
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Date published2014-01-01
Rock mechanics problems decision algorithm for bottom layers of potash salt deposits
Decision algorithm for rock mechanics problems for bottom layers of potash deposits is suggested. Flow chart for the algorithm and it’s parts is shown. The algorithm represents the method to choose excavation technology for multi-layer potash deposits.
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Date submitted2013-07-28
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Date accepted2013-09-27
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Date published2014-01-01
The analysis of the stress-and-strain state in vicinity of mining excavations
- Authors:
- A. A. Sankovskii
- E. R. Kovalskii
Estimation of the strain-and-stress state and displacement of the waterprotective layers in vicinity of mining excavations in conditions of SKRU-3 mine (Uralkali Group) is done. It is shown that loadings on pillars on layer Kr.II exceed 15-20 % loadings on layer AB.
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Date submitted2013-07-28
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Date accepted2013-09-08
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Date published2014-01-01
Endogenous fire hazard Kuzbass mines
- Authors:
- A. A. Sidorenko
The analysis of a current state of a problem of emergence of endogenous fires is made at working off of coal layers in mines. Influence of mining-and-geological conditions on efficiency and safety of working off of the layers inclined to selfignition is considered. Need of an integrated approach to a solution of the problem of endogenous fires is shown at working off of stocks in difficult mining-and-geological conditions.
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Date submitted2013-07-26
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Date accepted2013-09-18
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Date published2014-01-01
Mining units quantity determination to achieve the established open cast output and averaging ore requirements
- Authors:
- S. I. Fomin
- V. A. Shevelev
- M. A. Marinin
The balancing stripping ratio and ore production methods include simulation in order to reduce the prestripping waste and maintain a suitable space between each bench. The reliability analysis method of mining technological system in mine design is discussed in this paper. The probabilistic approach used here takes into consideration the uncertainty associated with estimation of most economic, mining and geological variables. This paper concerns the rational distribution of reserves which can be mined and waste advancing down the open cast site at steep pitch deposit.
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Date submitted2013-07-14
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Date accepted2013-09-07
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Date published2014-01-01
Open cast geological conditions analysis and the mining units formation in ore losses and dilution determining
- Authors:
- S. I. Fomin
- P. B. Kava
- M. A. Marinin
The opencast geological conditions analysis and the mining units formation in ore losses and dilution determining is given in dynamic type. The optimum height of immixed rocks triangle on minimum economic damage from losses and dilution criterion is determined. Minimum damage of an enterprise from losses and dilution of one ton of ore that provides minimum producing cost of ore mining is accepted as a criterion of optimum correlation of technological standards of rate of contact areas and standards of losses and dilution of ore.
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Date submitted2013-07-23
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Date accepted2013-09-11
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Date published2014-01-01
Use of coefficient of output at pit delimitation
- Authors:
- G. A. Kholodnyakov
- N. S. Vainonen
In work it is settled an invoice the final depth of a pit of the conditional complex occurrence presented by three minerals. It is shown that when developing complex occurrence it is more expedient to use coefficient of output, instead of overburden ratio.
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Date submitted2013-07-13
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Date accepted2013-09-03
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Date published2014-01-01
Technology options for the preparation of new horizons
- Authors:
- G. A. Kholodnyakov
- D. N. Ligotskii
The paper considers the advantages and disadvantages of technological options for the training of new horizons in the fields of mineral resources with large water production using excavators such as direct and backhoes.
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Date submitted2013-07-23
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Date accepted2013-09-09
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Date published2014-01-01
Quarry capacity of ore relation from bench height
- Authors:
- G. A. Kholodnyakov
- M. D. Abdullaev
The work evaluated the impact of the bench height on the development of mining operations and quarry capacity of ore. The analysis of the height of the step depends on the area of the ore deposit within the quarry field, as well as the dependence of the length of the scope of work on the angle of the ore body.
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Date submitted2013-07-16
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Date accepted2013-09-08
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Date published2014-01-01
Determination of ore reclaiming efficiency on accumulation and bedding stockyards
- Authors:
- V. A. Shevelev
Буферно-усреднительный склад в карьере является сложной системой, эффективность функционирования которой зависит от многих факторов. Основным показателем работы внутрикарьерного склада является эффективность усреднения на нем руды.
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Date submitted2013-07-10
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Date accepted2013-09-14
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Date published2014-01-01
Quality management of brown coal at open-pit mine in the presence of several consumers with varios requirements to it
- Authors:
- M. M. Yakubovskii
- K. Drebenshtedt
The article considers main stages of mine planning and modern methods of quality management at open-pit coal mines in Germany. The object of research is the company «MIBRAG GmbH» producing brown coal and providing them a wide range of consumers which have dif-ferent demands to the coal’s quality.
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Date submitted2013-07-01
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Date accepted2013-09-13
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Date published2014-01-01
Analysis of accident and stages of effective safety management system on the example of «Vorkutaugol»
- Authors:
- E. G. Buldakova
- E. B. Gridina
The paper analyzes the time periods with significant differences on the level of technology of mining, production volumes in mines of «Vorkutaugol». The features of an integrated system of labor protection and industrial safety, realized in the merger.
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Date submitted2013-07-05
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Date accepted2013-09-23
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Date published2014-01-01
Increase of stability of mine workings in the permafrost zone
- Authors:
- A. F. Galkin
Some experimental results of increase of stability of mine workings are presented in this article. The investigated mine workings are located in the permafrost conditions and the increasing of stability is achieved by insulation. Problems of thermal protection of frozen breeds are considered at high temperatures of air in mine workings.
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Date submitted2013-07-23
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Date accepted2013-09-14
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Date published2014-01-01
Experimental researches on definition energy costs of workers, depending on the parameters of the cooling microclimate
- Authors:
- A. F. Galkin
- R. G. Khusainova
The results of comprehensive research on the change of energy expenses, depending on the operating parameters of the cooling microclimate, on the basis of which is determined by the need to adjust the work and rest conditions for workers of the northern regions.
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Date submitted2013-07-09
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Date accepted2013-09-01
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Date published2014-01-01
Certain periodicity organizational and technical preventive measures, aimed at improving the effective management of safety on coal open pit mining
- Authors:
- E. B. Gridina
- A. V. Pasynkov
Developing preventative preventive measures is one of the key ways to increase the effectiveness of occupational health and safety of miners. Integrated use of probabilistic and expert - analytical methods for analysis of injury, in particular it allows to develop a plan and to deter-mine the frequency of short-term preventive measures.
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Date submitted2013-07-05
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Date accepted2013-09-21
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Date published2014-01-01
Justification of effective dust control in the open-pits of cryolithozone
- Authors:
- E. P. Dalbaeva
The new method of assessing the effectiveness of the winter dust suppression in quarry has been worked out, allowing to quantifies the necessary level of winter dust control to minimize the risk of occupational diseases caused by negative effect of dust on workers organism.
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Date submitted2013-07-29
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Date accepted2013-09-13
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Date published2014-01-01
Water economic recultivation of sandy opencasts in Leningrad region as the complex way of decision of region’s environmental problems
- Authors:
- S. V. Kovshov
- M. M. Yakubovskii
- V. P. Kovshov
One of the most perspective recultivation directions of the fulfilled sandy open-cast mines is water economic. There of working out of new more simple and economic projects water economic recultivation is required, thus capable in a complex to solve various geoenvironmental problems. The short review of the basic existing recultivation directions the fulfilled sandy open-cast mines is given. The water economic direction in which the special accent becomes on designing of fire reservoirs is in more details analyzed.
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Date submitted2013-07-09
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Date accepted2013-09-04
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Date published2014-01-01
A new chemical method of dust suppression for the storage of the rock mass
The using of chemically-active reagents is one of the most promising directions in the process of dust suppression. Due to the need to develop new ways of suppression of dust during storage of the rock mass. The paper provides the analysis of the use of calcium carbide as an element of the dust suppression system and the system of permafrost rocks.
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Date submitted2013-07-17
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Date accepted2013-09-07
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Date published2014-01-01
Increasing efficiency and mine resource development on the Prokopevsk-Kisilevsky deposit
The security issues of the deep mining of Prokopevsk-Kisilevsky deposit the Kuzbass are considered. The analysis of the existing technologies and systems development are executed. The recommendations to improvement of the technical and economic parameters, reducing accidents and injuries of the working off inventories powerful coal steeply inclined seams and steep coal seams were given.
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Date submitted2013-07-26
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Date accepted2013-09-22
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Date published2014-01-01
Production of slate gas
- Authors:
- R. D. Magomet
In article economic, technical and ecological aspects of development and development of production of natural gas from slate breeds are considered. The comparative analysis of experience of production of slate gas is carried out to the USA, EEC, Russia.
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Date submitted2013-07-20
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Date accepted2013-09-01
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Date published2014-01-01
Methodological features of intensification natural ventilation pits
- Authors:
- V. A. Rogalev
- K. N. Yastrebova
Effective method of intensification of natural ventilation pits is to ensure steady airflow around the sides of the wind stream. Methodical features of the implementation of this method and the corresponding mathematical algorithm.
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Date submitted2013-07-22
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Date accepted2013-09-28
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Date published2014-01-01
Influence of personal factors on neadekvatne of action of officials of mines
In article the method of definition of personal factors of inadequate actions which lead to traumatism cases at the mountain enterprise is opened. For definition of personal factors the data received at poll of experts are used.
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Date submitted2013-07-19
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Date accepted2013-09-18
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Date published2014-01-01
Experience of implementing electromagnetic shielding on OJSC «Mordovcement»
- Authors:
- P. S. Sedov
- S. V. Kovshov
- Z. N. Cherkai
The negative effects of electromagnetic waves could be appear during violation of the designing established rules of installation and operating various sources of electromagnetic fields. Permanent action of electromagnetic small intensity waves have negatively influence on the enterprise’s workers. Employees feels tired, working capacity can be reduced, there is an un-reasonable irritability, periodic headaches and dream violation. This article is offers a package of measures to reduce electromagnetic load on staff of JSC «Mordovcement», by introduction of electromagnetic shielding system of the industrial frequency fields.
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Date submitted2013-07-27
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Date accepted2013-09-03
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Date published2014-01-01
Gas balance definition of working area with face zone isolation
- Authors:
- V. V. Smirnyakov
The article describes the methods for gas balance definition of working area with face zone isolation from mined-out space, that have allowed to change the air distribution in face zone and to determine the part of evolved gas from bed and marked bed.
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Date submitted2013-07-16
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Date accepted2013-09-20
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Date published2014-01-01
Choice and valuation of similarity parameters for aero-gas-dynamic modeling with main roof collapse
- Authors:
- V. V. Smirnyakov
The article describes the necessary conditions for similarity parameters choosing for aero-gas-dynamic modeling with main roof collapse and it has been made analysis of them.
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Date submitted2013-07-02
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Date accepted2013-09-01
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Date published2014-01-01
Analytical estimation of aerodynamic characteristics of the main roof collapse
- Authors:
- V. V. Smirnyakov
The article describes the formulas for calculation of air flow characteristics, that originates from the main roof collapse and also it has been made analysis of variates, that form their parts.
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Date submitted2013-07-21
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Date accepted2013-09-04
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Date published2014-01-01
About the long-range programme for industrial and ecological safety in coal branch of industry
- Authors:
- V. V. Smirnyakova
The conditions and the main problems of Russian coal industry development have been envisaged, the purposes, problems and realization terms of the longrange programme for industrial and ecological safety in coal branch of industry and also amount of finance and waiting results have been shown in the article.
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Date submitted2013-07-10
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Date accepted2013-09-19
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Date published2014-01-01
Occupational safety and health professional
- Authors:
- Z. N. Cherkai
The comparative data on the number of employees at work in hazardous conditions, the structure of the circumstances and conditions of professional diseases are identified causes of unsatisfactory working conditions.
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Date submitted2013-07-13
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Date accepted2013-09-21
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Date published2014-01-01
Modern technology of consumption waste management in the mining agglomeration
- Authors:
- M. Sh. Barkan
- A. B. Makhovikov
- E. I. Kabanov
Any industrial agglomeration is a territory, not only with a high concentration of industrial facilities, but also with high population density. This, in turn, is an essential prerequisite to problems associated with the large volume of waste consumption. To solve these problems it is necessary not only to improve the technology for processing different kinds of waste, but also to establish a system by their rapid collection and transport.
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Date submitted2013-07-06
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Date accepted2013-09-18
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Date published2014-01-01
Comparative analysis of methods of waste disposal biological treatment of the fuel and energy complex
- Authors:
- A. E. Isakov
For the treatment of domestic and industrial waste water in Russia and abroad widespread biological treatment method. With his undoubted merits it has a significant drawback – the formation of a large amount of excess sludge. In the case of waste water containing high levels of heavy metals, its processing by traditional methods can be hazardous to the environment.
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Date submitted2013-07-22
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Date accepted2013-09-24
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Date published2014-01-01
Contemporary Problems of salvaging drill cuttings on the Western Siberia oilfields of the final stage of development
- Authors:
- V. V. Katsilo
The article deals with the problem of disposing of industrial and technological drilling wastes due to the application of salt biopolymer drilling fluids for extraction of residual oilfields of Western Siberia, which are at an final stage of development using the technology of directional drilling. The problem of disposal of drilling waste in the oilfields of the final stage of development is proposed to solve through the introduction of protective functions of the complex engineering activities, including, the development of waterproofing layer of clay cuttings, which is formed by drilling the top of the production casing, for different host rock cuttings.
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Date submitted2013-07-02
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Date accepted2013-09-09
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Date published2014-01-01
Identification of degradation of soil and vegetable communities testing technogenic loading on materials of space shooting
- Authors:
- D. S. Korelskii
The basic principles on the use of satellite images of different resolution to assess the state of natural soil and plant communities with severe human impacts, primarily atmospheric. Researchers give now various signs of change of qualitative and quantitative structure of vegetation under technogenic loading. However all of them have essential shortcomings that demands continuation of researches in the field for the purpose of increase of reliability of allocation of zones of a breaking of plant communities in an operative mode.
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Date submitted2013-07-01
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Date accepted2013-09-01
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Date published2014-01-01
Studying of the overgrowth mechanism dumps overburden breeds in climatic conditions of northern regions
- Authors:
- V. S. Kuznetsov
In this work the mechanism of overgrowth dumps overburden breeds in climatic conditions of northern regions is considered. Conditions influencing formation of «pioneer» vegetable communities in territories broken by open mining operations are analyzed.
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Date submitted2013-07-28
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Date accepted2013-09-07
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Date published2014-01-01
Application of the method of x-ray fluorescence for carrying out monitoring of the soil and vegetable cover
- Authors:
- M. A. Kulikova
For preservation of soil-vegetable cover quality, the prevention and decrease of negative technogenic impact it is necessary to exercise systematic control of land resources condition. Monitoring as a system of regular supervision over a state of environment for the identification purpose of anthropogenous effects and consequences and acceptance of the appropriate nature protection measures differs a wide set of various options of its realization depending on specific objectives, situations, terms, scales, intensity of influence.
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Date submitted2013-07-18
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Date accepted2013-09-30
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Date published2014-01-01
Reducing environmental hazard drilling works
- Authors:
- M. M. Malyshkin
The problem of disposal of drilling waste is proposed to solve through the introduction of protective functions of the complex engineering activities, including, firstly, the application in the process of drilling mud through watersoluble biodegradable polymers and quadruple systems, cleaning fluid, and secondly, the application design platform with the wells trench in the body of the embankment site for pressed cuttings, which is arranged for a temporary earthen vessel for drilling wastewater.
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Date submitted2013-07-06
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Date accepted2013-09-09
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Date published2014-01-01
Primary forecast of density-related nonstationarity of cross-section upper part
- Authors:
- I. B. Movchan
- V. Yu. Asyanina
The state of profile higher part state and the directly depended housing stock are determined by geological factors and human influence. It both define time variation of the density of surface states structural and material systems. Gravimetric survey for the gravitational field temporal dynamics is the cheap method for its rapid assessment. Its description can be done at two levels: the structural one (qualitative) and the depth (quantitative).
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Date submitted2013-07-03
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Date accepted2013-09-16
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Date published2014-01-01
Tracing the forecast structural elements while interpretation of remote sensing data within Fresnillo city (Central Mexica)
- Authors:
- I. B. Movchan
- V. Yu. Asyanina
The remote sensing data are experimental foundation for leading geological prediction, if the access to geophysical field is absent. The methodology of authorship for automatize lineament decoding with different generalization levels is used for analysis. The result represent a combination of linear and circular structures, which are arranged into a quasiperiodical plan. Discordant proportion areas of overlapping structural component of this plan have a prognostic significance.
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Date submitted2013-07-27
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Date accepted2013-09-21
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Date published2014-01-01
Development free-chemical metod of cltaning water out from oil on the cmf companies
- Authors:
- M. A. Pashkevich
- I. A. Golubev
In this paper deals with the problem of pollution of oil-contaminated wastewater. A method of treatment which increases the quality of recyclable waste water, by improving existing production systems using Reagent-free method.
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Date submitted2013-07-08
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Date accepted2013-09-28
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Date published2014-01-01
Research of technogenic migration of manganese in water objects of the Kovdor area
- Authors:
- V. A. Petrova
- M. A. Pashkevich
Researches of a condition of reservoirs of the Kovdor area showed that one of actual problems is pollution of a surface water by compounds of manganese. In this regard in work questions of a manganese origin in water objects and features of behavior of this element depending on changing conditions of the environment are considered.
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Date submitted2013-07-18
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Date accepted2013-09-14
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Date published2014-01-01
Analysis of impact of gas field water bodies
- Authors:
- T. A. Petrova
Surface and ground water are one of the most environmentally vulnerable elements of the environment. This explains the high rate of migration of chemical elements in the subsurface hydrosphere. Sources of impact on the water environment in the vicinity of the gas field are numerous areal and linear features primary and secondary process, as well as objects related infra-structure.
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Date submitted2013-07-03
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Date accepted2013-09-18
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Date published2014-01-01
Approach to the conduct of monitoring studies in the area of the mineral and raw complex objects using remote sensing
- Authors:
- T. A. Petrova
The article gives a brief description of the spacecraft used to monitor the environment in the vicinity of industrial facilities mineral complex. Describes the basic uses of satellite data for assessing the impact of objects mineral complex on the components of the environment.
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Date submitted2013-07-22
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Date accepted2013-09-18
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Date published2014-01-01
Optimization of work of dust supperession sprayer with use of computing modelling
- Authors:
- Yu. D. Smirnov
- O. S. Dobrynin
In the Mining University conducted test flights of drones developed on the basis of RDR-2012 «Mining», designed and ready for implementation techniques detour routes and measurement methods for conversion and transmission of information for environmental studies.
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Date submitted2013-07-11
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Date accepted2013-09-05
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Date published2014-01-01
Mathematical modelling of applied problems of rock mechanics and rock massifs
- Authors:
- A. P. Gospodarikov
- M. A. Zatsepin
The variety of the mining and geological conditions with further increasing in depth of the development of bedded deposits leads to necessity for the analysis of stress and strain state near different types of excavations.
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Date submitted2013-07-16
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Date accepted2013-09-02
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Date published2014-01-01
Physical processes methane formation as a result of coal disintegration
- Authors:
- M. G. Menzhulin
- A. V. Montikov
- S. V. Vasilev
Considered are the thermodynamic conditions on the surfaces generated in coal cracks in the process of its destruction. It is shown that the temperature at the surface of cracks on the stage of destruction is comparable with the melting temperature of coal and ignition of methane. Ratios for the assessment of the development phase transitions on the surfaces of coal cracks. It is shown that the rate of methane in proportion to the total surface of the pieces of coal at de-struction. To reduce the amount of methane generation it is recommended to reduce the load on the breakage face.
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Date submitted2013-07-18
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Date accepted2013-09-24
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Date published2014-01-01
Forecast stress state of mass when extraction coal reserves under open pit mine in the underground mining Nui Beo (Vietnam)
- Authors:
- Nguen Van Kuang
Define the underground extraction zone, which under the influence of open pit mine, on the tunnels in geology conditions of the underground mining Nui Beo. Calculate the components of the stress of the around rocks and tunnels under the pits and given the reasonable parameters of the support passport.
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Date submitted2013-07-12
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Date accepted2013-09-22
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Date published2014-01-01
Method of normal load prediction on vertical shaft lining based on nonlinear behaviour of rock mass
- Authors:
- A. G. Protosenya
- Nguen Ny Bai
Method of normal load prediction on vertical shaft lining which is constructed in nonlinear rock mass is suggested. It is supposed, that limit state zone is formed around excavation. The deformation properties of rock mass in the suggested method are determined according to nonlinear rock model. In order to predict stress and strain state around excavation the equations of deformation plasticity theory are used. The Mohr-Coulomb strength criteria is taken as a yield surface.