Abstract
Based on the results of monitoring with a temporary seismic network in the southern Kuzbass in an area of technogenic seismic activation that formed during simultaneous impact of open and underground coal mining, the article presents a detailed study of the spatial structure of this activation, its development over time, and its relationship with tectonic faulting. Seismic activation near underground workings is differs in the locality of the area and a large number of earthquakes with local magnitudes of ML ≤ 2 (Bormann, 2002). For three closely located coal mines, general seismic activation is observed, within which, as a local zone, there is activation of underground workings characterized by strong earthquakes with ML = 3–4. The focal depths have a bimodal distribution with maxima in the 1–1.5 and 2–3 km ranges. Both in the area of underground mines and open mines, the deep interior is seismically activated much deeper than mining works, while the seismic process is unsteady and pulsating in time.
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ACKNOWLEDGMENTS
The authors are grateful to JSC UK Kuzbassrazrezugol; LLC KRU-Vzryvprom, and LLC Razrez Korchakolsky for information on industrial blast parameters, as well as to the Department of the Coal Industry of the Kemerovo Oblast Administration for their support during the study.
Funding
This study was supported by the following projects: FNI no. 0152-2016-0002 “Evolution of Seismotectonic Processes in Siberia based on Earthquake Monitoring Data”, p. 136 “Catastrophic Endogenic and exogenic Processes: Problems of Forecasting and Reducing the Level of Negative Consequences” (research topic within the state task of the Siberian Branch, Russian Academy of Sciences SB RAS, no. 007-00204-16 PR); FNI no. 0331-2019-0006 “Structures and Stress–Strain State of the Earth’s Crust of the Platform and Folded Regions of Central Asia Based on the Joint Solution of the Inverse Problems of Seismology and Gravimetry” (research topic within the state task of the Institute of Geochemistry, Siberian Branch, Russian Academy of Sciences).
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Emanov, A.A., Emanov, A.F. & Fateev, A.V. Monitoring of Seismic Activation in the Area of the Kaltan Open Pit and Alardinskaya Mine (Kuzbass). Seism. Instr. 56, 82–92 (2020). https://doi.org/10.3103/S0747923920010053
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DOI: https://doi.org/10.3103/S0747923920010053