Study on the correlation between seismic characteristics and mine rock burst in Hegang area

In order to determine the geological dynamic environmental conditions for natural earthquakes and mine impact ground pressure, reveal the spatiotemporal correlation between the two, and further study the intensity classification of mine impact ground pressure, the study takes the natural earthquakes and mine impact ground pressure in Hegang area as the background. Based on the earthquake monitoring method of mobile seismic stations, the study analyzes the seismic characteristics of the Hegang area and the geological dynamic environment of impact ground pressure, as well as their spatiotemporal correlation, and proposes a classification method for impact ground pressure mines. The research shows that there is significant seismic activity in the southern mine area of Hegang, which is distributed in a NNE-oriented strip, while the mine impact ground pressure is distributed in a NE direction, showing a "parallel conjugate" relationship, which is consistent with the NE distribution of seismic activity in the large regional geological structure of the Yilan-Yitong fault zone, indicating that the crustal activity in the southern mine area of Hegang is controlled by the regional geological dynamic environment; through the correlation analysis of earthquakes and impact ground pressure in the same time period in terms of time, location, frequency, etc., it is determined that there is a good consistency between the two in time and space; through the analysis of the focal mechanism solution, it is revealed that the "P-axis" direction of earthquakes and large energy microseismic events in mines is consistent, indicating a unified tectonic stress field and energy conditions, suggesting that earthquakes and impact ground pressure in the Hegang area have a unified geological dynamic environmental condition; finally, based on the correlation between the two, reasonable selection of earthquake and impact ground pressure correlation indicators, different quantification values are given for each indicator, and the comprehensive indicator quantification results, a classification method for impact ground pressure mines in the Hegang area is proposed.