The influence of extensive caving zones on the state and behavior of the surface as a result of underground mining works

Fedorov, Evgeny; Kassymkanova, Khaini-Kamal; Jangulova, G.; Miletenko, N. A.

doi:10.1051/e3sconf/202019203009

Cited by 7 publications

(5 citation statements)

References 2 publications

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“…Experience shows that in most cases it is most efficient from the engineering and organizational points of view to drive horizontal and inclined transport transportation workings from the open pit side [47][48][49]. When determining the parameters of OT and OUT, the methods used for OPMO are applied [2][3][4] and technological features of determining parameters of mining operations in combined mining are also considered [53][54][55].…”

Section: Analysis Of Researches and Publicationsmentioning

confidence: 99%

Iron ore underground mining under the internal overburden dump at the PJSC “Northern GZK”

Pysmennyi

Chukharev²,

Kyelgyenbai³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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Deterioration of mining conditions at mining deposits by open pit methods (increased mining depths, reduced ore deposit thickness) leads to an increase in mining costs. In Ukraine, to reduce open pit mining costs, overburden is disposed in temporary internal dumps located directly in the open pit over the ore reserves. Reactivation of pit areas with the temporary internal overburden dump located on them results in a surge of mining operations and deterioration of technical and economic indicators. Increased energy consumption, a decrease in working site parameters, an increase in angles of open pit slopes and stripping lags lead to unprofitability of open pit mining. One of the solutions to the mentioned scientific and engineering problem involves combined mining of deposits by integrated open pit and underground mining operations. The combined open pit-underground mining method enables reducing mining costs and enhancing technical and economic indicators. The suggested schemes for opening reserves located under the internal overburden dump enhance technical and economic indicators of deposit mining through making the internal dump a permanent one. This allows further disposal of overburden into internal dumps. Implementation of scientific recommendations and technological solutions resulted from the research performed (exemplified by the deposit Hannivske, Ukraine) reduces the cost of ore by 1.33 USD/t. At the same time, the total cost of building an underground mine makes 16.4 M USD, which is 30% less than when applying traditional opening vertical shaft schemes.

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Section: Analysis Of Researches and Publicationsmentioning

confidence: 99%

Iron ore underground mining under the internal overburden dump at the PJSC “Northern GZK”

Pysmennyi

Chukharev²,

Kyelgyenbai³

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

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“…Changes in geoenergy are directly caused by cavities of various shapes and sizes created in the rock mass. Therefore, in order to study pre-crisis anomalies in the development of geomechanical processes preceding geodynamic phenomena, much attention has recently been paid to the energy parameters characterizing the rock mass state as an open, dissipative natural and technical system [22]- [24].…”

Section: Critical Analysismentioning

confidence: 99%

Improving the accuracy of predicting the hazard of the earth’s surface failure formation during underground mining of mineral deposits

Imansakipova¹,

Aitkazinova²,

Sakabekov³

et al. 2021

Min. miner. depos.

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Purpose. Development of a new approach to improving the accuracy of predicting situations in which the earth’s surface failures occur as a result of undermining a rock mass during the development of mineral deposits. Methods. The critical situations, including the earth’s surface failures, are predicted on the basis of assessing the value of geoenergy and studying its change as large volumes of rock mass are involved in mining. Analytical solutions based on the fundamental laws of physics and mechanics of continuous media are used. The research is performed using methods of cause-and-effect analysis. Findings. Based on the cause-effect relationship, determined between the change in the value of the mass geoenergy and deformation processes on the daylight surface of the field, an effective method has been developed for ranking it according to the degree of hazard of failure formation with the simultaneous use of two criteria. One of the criteria is determined by the relative change in geoenergy during the system transition from the initial (stable) state to the current one, which becomes unstable under certain conditions. The second criterion is formed on the basis of the change in geoenergy during the transition from the current (possibly unstable) state to the final (stable) state. Originality. For the first time, when zoning the daylight surface of a field according to the degree of hazard of failure formation, two ranking criteria are used simultaneously, based on the assessment of geoenergy accumulated in a heterogeneous mass, when it is undermined in the conditions of triaxial compression. Practical implications. The territory ranking method, developed on the basis of the used criteria for hazard of failure formation, allows improving the quality of situational control, predicting risk situations and their development, as well as optimizing the short-term and long-term plans for the development of mining operations.

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“…That can prove the efficiency of seismic exploration while solving following geological problems: studies of structural and tectonic formation of ore areas; singling out and specification of the ore control structures; identification and depth mapping of the ore control fractures; volumetric mapping of intrusions; determining spatial position of the ore-bearing zones inside the intrusive ones etc. [39], [40].…”

Section: Introductionmentioning

confidence: 99%

Improving a geophysical method to determine the boundaries of ore-bearing rocks considering certain tectonic disturbances

Kassymkanova¹,

Истекова²,

Rysbekov³

et al. 2023

Min. miner. depos.

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Purpose is to improve a geophysical method of determining the boundaries of ore-bearing rocks and tectonic disturbances under complex mining and geological conditions while developing 3D geological models. Methods. 3D geological models of natural objects were developed on the basis of complex structural, geological-geophysical, and lithological facies analysis with the wide use of modern 3D seismic exploration technologies taking into consideration the parameters for prediction and selection of optimal factors for ore deposit development. Findings. The scientifically substantiated result is represented by the increased reliability and efficiency of seismic exploration for singling out the ore horizons and ore bodies as well as tectonic disturbances at different depths by specifying geological structures of the prospective areas and sites under study. Originality. Basing on the carried out studies, methods of the development of 3D geological models to study depth geological inhomogeneities of the ore-bearing complexes under complex mining and geological conditions were improved. Practical implications. The obtained results of 3D modelling of geological media basing on the applied 3D seismic exploration will help increase a confidence factor of scientifically substantiated prediction of ore deposits, provide optimal development of complex ore objects, reduce risks, and increase economic efficiency of solid deposit development under complex mining and geological conditions.

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The influence of extensive caving zones on the state and behavior of the surface as a result of underground mining works

Cited by 7 publications

References 2 publications

Iron ore underground mining under the internal overburden dump at the PJSC “Northern GZK”

Iron ore underground mining under the internal overburden dump at the PJSC “Northern GZK”

Improving the accuracy of predicting the hazard of the earth’s surface failure formation during underground mining of mineral deposits

Improving a geophysical method to determine the boundaries of ore-bearing rocks considering certain tectonic disturbances

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