Выпуск: 6 , Том: 15 , Год издания: 2021

A man-induced seismic activation occurring near the Bachat open-cast coal mine in Kuzbass is studied. The Bachat earthquake of June 18, 2013 (M-L = 6.1) is the world's largest man-made earthquake related to the extraction of solid minerals. It created a powerful aftershock process. More than 3000 earthquakes have been recorded. It was found that the seismic process in the area of the mine as of 2020 is continuous and non-stationary: there are periods of background seismicity with relatively small and infrequent events, and periods of activations with earthquakes that are felt throughout the entire Kemerovo region (M-L >= 4), and an increased (by 2-3 times) frequency of small events. The duration of seismic activations is 1-3 months. Focal mechanisms of 76 events were determined for the mine area. The fact of mismatch between the model of the stress state of the Bachatsky open-cast coal mine area as recovered from the mechanisms of aftershocks and the mechanism of the main shock of the Bachat earthquake is found.