ANALYSIS OF COAL SEAM PERMEABILITY AROUND THE EDGES VERSUSSTRESS-STRAIN STATE OF ROCK MASS

The features of the natural-and-induced seismicity are analyzed in the center of Kuzbass and at individual open pit coal mines. The influential factors of such seismicity are mostly connected with development of deep faults. Local destruction and transformation of coal pit walls is conditioned by geological structure of coal deposits, relief of terrain, climatic factors, modes of overburden and bed rock occurrence, water flows, technologies of overburden removal and actual mining, availability of rock exposures in depth of excavations in the absence of lateral earth pressure coefficient, as well as their interaction and mechanisms. The scientific research implemented at the Institute of Mining, SB RAS and the open pit mining practice shows that the listed factors have decisive effect on deformation–wave processes in coal pit walls and cause local destruction in depth of rock mass under weak lateral earth pressure at exposures. As a consequence, seismic events build up and pass to the stage of low-energy swarming flows and small-focus earthquakes in the concentration areas of mining activities. New objectives are formulated for the advanced research of the interaction between the mentioned natural/ induced factors and mechanical erosion, deformation–wave and seismic processes in depth of pit walls in the absence of lateral earth pressure at exposures based on the integrated monitoring of nonlinear geomechanical processes.

Acknowledgements: The study was supported by the Russian Science Foundation, Project No. 17-17-01282.


For citation: Oparin VN., Adushkin VV., Yushkin VF., Potapov VP. Influence of natural climate and mining-induced impact on mechanical erosion and seismic noise in the areas of open pit coal mines in Kuzbass. MIAB. Mining Inf. Anal. Bull. 2019;(9):72-101. [In Russ]. DOI: 10.25018/02361493-2019-09-0-72-101.

Keywords

Оpen pit coal mine, overburden, natural climatic conditions, fractures, deep fault, mining, mechanical erosion and seismic processes, geomechanical monitoring.

Issue number: 9
Year: 2019
ISBN: 0236-1493
UDK: 550.3 + 622
DOI: 10.25018/0236-1493-2019-09-0-72-101
Authors: Oparin V. N., Adushkin V. V., Yushkin V. F., Potapov V. P.

About authors: V.N. Oparin, Corresponding Member of Russian Academy of Sciences, Dr. Sci. (Phys. Mathem.), Professor, Head of Department, e-mail: oparin@misd.ru, V.V. Adushkin, Аcademician of Russian Academy of Sciences, Advisor of Russian Academy of Sciences, Dr. Sci. (Phys. Mathem.), Institute of Geosphere Dynamics of Russian Academy of Sciences, 119334, Moscow, Russia, e-mail: adushkin@idg.chph.ras.ru, V.F. Yushkin, Dr. Sci. (Eng.), Leading Researcher, e-mail: L14@ngs.ru, V.P. Potapov1, Dr. Sci. (Eng.), Professor, Director, Institute of computer technology, Kemerovo branch, Siberian Branch of Russian Academy of Sciences, 650025, Kemerovo, Russia, e-mail: ict@ict.nsc.ru, Chinakal Institute of Mining of Siberian Branch of Russian Academy of Sciences, 630091, Novosibirsk, Russia. Corresponding author: V.N. Oparin, e-mail: oparin@misd.ru.

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