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Date submitted2020-05-07
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Date accepted2020-05-24
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Date published2020-06-30
Study of the technogenesis of the Degtyarsky mine by audio-magnetotelluric express sounding
- Authors:
- Vadim A. Davydov
The audio-magnetotelluric express sounding was performed at four sections crossing the mine field of the currently not functioning Degtyarsky mine. Field measurements were carried out by a universal broadband receiver “OMAR-2m” with active electromagnetic field sensors developed at the Institute of Geophysics UB RAS. Based on the obtained data, deep sections of the electrophysical parameters of the medium – apparent resistivity and effective longitudinal conductivity – are drawn. The nature of the geoelectric structure of the section allows mapping of the major lithochemical contamination plume and identifying the tectonic disturbance zones that drain aggressive mine waters. The mine waters of the Degtyarsky mine are a source of dangerous technogenic pollution. Despite the neutralization of surface runoff, underground routes of acidic water migration occur along tectonic cracks, primarily in the zone of the regional Serovsko-Mauksky fault. Tectonic zones in the mine area contain contaminated fissure-vein water, which is transited at a depth of 70 to over 200 m. Discharging ascending springs of such waters can be located at a great distance from controlled hydrological objects and pollute sources of drinking and household water supply. Urban development in the western and eastern parts of Degtyarsk does not fall within the distribution zone of polluted water. The southern part of the city is located beyond the watershed of the mine water flow area, but a danger of local contamination by tectonic disturbance zones remains possible. The worst environmental situation is observed in the northern outskirts of Degtyarsk, which falls into the area of heavy pollution of underground and surface waters. Besides, acidic fumes from the flooded Kolchedanny quarry can affect the health of city residents when emitted to the atmosphere.
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Date submitted2018-01-14
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Date accepted2018-03-12
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Date published2018-06-22
Peculiarities of kinematics of rock mass shear during development of subseismic-scale faults
- Authors:
- A. V. Merzlikin
- L. N. Zakharova
The article describes the mechanism of formation and development of subseismic-scale faults in sedimentary rock mass based on results of physical and mathematical simulation. Physical modelling of layered rock massif was carried out by using sand-gypsum mixture. The results of physical modeling made it possible to visually evaluate the process of formation and development of subseismic-scale faults, to establish the orientation and amplitude of the modeled faults. It was established that faults with higher amplitude had filler material formed because of friction of fault edges/walls. The volume of modelled formation after formation of faults depending on fault amplitudes changed from 2-3 to 10 %. To gain information on stress deformed condition of rock massif and identification of key peculiarities of fault propagation dynamics we used the mathematical modeling based on particle-flow algorithm. The results of mathematical modeling determined that during formation of low amplitude faults the shear field has several rock clusters. Due to interaction of clusters, which have coordinated movement and promote massif loosening, the rock mass accumulates voids, which are the prerequisite for formation of subseismic-scale faults. The gained results enable to specify the complex mechanism of irreversible shears and deformations of rock mass during formation and development of subseismic-scale faults. It contributes to the improvement of the methodology for predicting the SSF parameters, which is of practical importance in terms of reducing mining risks.
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Date submitted2013-07-27
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Date accepted2013-09-30
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Date published2014-03-17
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 submitted2009-10-12
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Date accepted2009-12-26
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Date published2010-09-22
Methods and techniques for control of rockburst-hazard in underground mining at ore mines of the Far-East district
An assessment is given to the present-day state of control of dynamic rock pressure manifestations in the rockburst-hazardous ore mines of the Far-East district. Consideration is given to the used methods and facilities for control of rock pressure and the ways for their improvement . Basic foundations of methodical approaches to the assessment of geomechanical state of rock mass by data of geoacoustic control are considered.
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Date submitted2009-10-21
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Date accepted2009-12-16
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Date published2010-09-22
Geomechanical foundations of the safe extraction in joint mining of rich, coppery and ore patches in deep ore mines at Тalnakh
- Authors:
- V. A. Zvezdkin
- A. A. Andreev
The paper deals with the specific formation of stress fields in ore-bearing intrusions at the Oktiabrsky and Talnakh ore deposits with due account of depth of occurrence and formation of tectonic disturbances. The authors have investigated the influence of mining works on stress state of ore-bearing portion of the intrusion. The relationships were obtained in terms of the formation of stress fields in the intrusion during its undermining, overmining and joint mining of several ore deposits. Some recommendations are given for mining of series of ore formations at the Oktiabrsky and Talnakh deposits.
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Date submitted2009-10-30
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Date accepted2009-12-30
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Date published2010-09-22
Prediction of geodynamic processes in exploitation of the rockburst-dangerous North-Urals bauxite deposit
- Authors:
- D. V. Sidorov
- O. B. Shonin
The paper presents the results of a computer modeling technology applied in the «Sevuralboxitruda» enterprise. The aim of the technology is to forecast geodynamical processes during mining works in tectonic-stressed zones of ore deposits. The impact degree on structural components of room-and-pillar mining method caused by active tectonic faults is estimated.
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Date submitted2009-07-25
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Date accepted2009-09-09
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Date published2010-04-22
The use of data on stress-strain state of rock mass in solutions of mining-and-technical tasks on the example of the Tishin ore mine
The Permion State Technical University and ASE «VNIItsvetmet» have carried out in situ measurements of stress-strain state at the Tishinsky lead-zinc ore deposit. Measurements and interpretation of deformations and stresses caused by excavation were used. Complex of researches made it possible to solve some important problems for safeguarding effective and secure ore production ore on deep level.
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Date submitted2009-07-29
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Date accepted2009-09-15
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Date published2010-04-22
Preconditions for application of supports of different types in productive workings of low-thick gently-pitching deposits in tectonically stressed massif (for conditions of the Karnasurt ore mine)
- Authors:
- A. V. Lovchikov
- A. V. Matytsyn
The paper presents the data on the mining-geological conditions for mining and types of stope supports applied at the Karnasurt Mine, the Lovozersky rare-metal deposit. The peculiar feature of mining conditions is the presence of high subhorizontal tectonic stresses in the rock masses, which make the stope roofs more stable, allowing application of non-reinforced types of support.
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Date submitted2009-07-16
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Date accepted2009-09-10
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Date published2010-04-22
Influence of tectonic stresses and geological disturbances in rock mass on the parameters of stress-strain state around mine workings
- Authors:
- D. N. Petrov
- I. S. Dolgy
- V. I. Ochkurov
The results of mathematical modeling of formation of stress fields in stratified rock mass under various vertical and horizontal stresses relation are presented. An assessment of influence of the presence and position of a great geological disturbance on a stress state around a mine working is considered.
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Date submitted1954-07-03
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Date accepted1954-09-27
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Date published1955-11-17
О тектонической нарушенности некоторых шахтных полей Сучанского угольного месторождения
- Authors:
- Unknown
Из числа разрабатываемых угольных месторождений СССР Сучанское месторождение по геологическим признакам и горно-эксплуатационным факторам является одним из самых сложных. Для него свойственны следующие основные особенности. Месторождение сильно дислоцировано. Пликативная и дизъюнктивная тектоника выражена резко. Угольные пласты (как горизонты) выражены, но изменчивы по мощности и качеству. Угленосная толща по плоскостям ослабления прорезана изверженными породами с проявлениями контактового метаморфизма. Ввиду того что антиклинальные части складок в значительной мере денудированы, разрабатываемые пласты угля заключены в синклинальных частях складок. Представляет несомненный интерес выяснение по данным эксплуатации распределения смещений и форм, в которых они проявляются в указанных условиях.