Monitoring of Seismic Activation in the Area of the Kaltan Open Pit and Alardinskaya Mine (Kuzbass)

• Published in: Seismic instruments 2020, Vol.56 (1), p.82-92
• Main Authors: Emanov, A. A., Emanov, A. F., Fateev, A. V.
• Format: Article
• Language: English
• Subjects: Activation; Area; Coal mines; Coal mining; Earth and Environmental Science; Earth Sciences; Earthquakes; Geological faults; Geophysics/Geodesy; Mines; Mining; Monitoring; Seismic activity; Tectonics; Underground mines; Underground mining
• ISSN: 0747-9239; 1934-7871
• DOI: 10.3103/S0747923920010053

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 M L ≤ 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 M L = 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.