Medvedieva О., Ryabko A., Ostapenko N., Pronko O., Zhanakova R. Assessment of the stability of a coal-mining enterprise's rock dump after reclaimation

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Parent Category: Geo-Technical Mechanics, 2024
Category: Geo-Technical Mechanics, 2024, Issue 170

Geoteh. meh. 2024, 170, 100-109

 

ASSESSMENT OF THE STABILITY OF A COAL-MINING ENTERPRISE'S ROCK DUMP AFTER RECLAIMATION

1Medvedieva О. 1Ryabko A. 1Ostapenko N.  1Pronko O. 2Zhanakova R.

1M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine

2Satbaev University

UDC 504.06:624.131.543:519.673

Language: English 

Abstract. The article considers an approach to the use of geomechanical parameters of the stability of slopes of dump systems as a component of a comprehensive environmental assessment of mining enterprises to be liquidated. Performing a geoecological assessment is necessary to establish the possibility and effectiveness of carrying out eco-oriented works during the conservation, closure and liquidation of mining enterprises. Numerical calculations are demonstrated on the example of a representative object - the tailings massif of the SE "Zarichna Mine" of the Mezhyrichan deposit of the Lviv-Volyn coal basin. The materials of the environmental impact assessment project (EIA) of the liquidation of this mining enterprise were used as initial data. The given structure of waste object analysis and calculations of sustainability indicators can be the basis for creating a standard procedure for geoecological assessment of slope systems of mining enterprises at various stages of existence - from design to liquidation. It is also possible to build a methodology standard for the relevant sections of the EIA of enterprises that have large-scale slope systems in their structure. The limit state (equilibrium) methods were used as methods of calculating the stability coefficient of dump slope systems. The results of the calculations show fairly close values of the stability coefficient for all methods. This is primarily due to their similar methodological basis. It is advisable to direct further research to the application of calculation methods based on other principles of building a geomechanical shear model, namely methods of the mechanics of solid deformable body and numerical approaches for solving the calculation part of stability models. It is also advisable to expand the structure of factors taken into account in geomechanical models of stability by adding submodels of hydrosphere-filtration, atmospheric-climatic, seismic and other phenomena. Based on the calculation, recommendations were made for further maintenance of the geomechanical properties of the dump in an environmentally hazardous state. Monitoring and technological measures of eco-safety in the conditions of adverse natural atmospheric, hydrospheric, climatic phenomena and reclamation works are defined.

Keywords: comprehensive assessment of the environmental safety of dump systems, the coefficient of stability of the slope system, models of the stability of rock massifs, closure of mining enterprises.

 

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About the authors:

Medvedieva Olha, Doctor of Technical Sciences (D. Sc.), Senior Researcher, Senior Researcher in Department of Ecology of Natural Resources Development, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-5575-713X

Ryabko Andrii, Junior Researcher in Department of Ecology of Natural Resources Development, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-6305-3853

Ostapenko Nataliіa, Candidate of Chemical Sciences (Ph.D.), Senior Researcher in Department of Ecology of Natural Resources Development, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0000-0001-5121-7160

Pronko Olena, Engineer in Department of Ecology of Natural Resources Development, M.S. Poliakov Institute of Geotechnical Mechanics of the National Academy of Sciences of Ukraine (IGTM of the NAS of Ukraine), Dnipro, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. , ORCID 0009-0005-0965-9666

Raissa Zhanakova, Candidate of Technical Sciences (Ph.D.), Associate Professor of the Mining Department, Satbaev University, Almaty, Kazakhstan, r.zhanakova@satbayev.university, ORCID 0000-0003-0845-8449