Influence of weak earthquake on rock burst risk in adjacent mine field
HE Gang;HE Hu;YANG Zengqiang
Jiangsu Coal Mine Rockburst Prevention Engineering Technology Research Center
Production Dispatch Command Center, Xuzhou Coal Mining Group Corp. , Ltd.
School of Resources and Geosciences, China University of Mining and Technology
Key Laboratory of Deep Coal Resource Mining of Ministry of Education, China University of Mining and Technology
Jiangsu Vocational Institute of Architectural Technology
Taking the weak earthquake near Zhangshuanglou Coal Mine as the engineering background, the rock burst risk affected by earthquake was analyzed through SOS microseismic monitoring, stress monitoring and seismic wave CT inversion and other technical means. The results show that the mine microseismic monitoring system has a certain response ability to weak earthquakes near the mine field, but the source position was outside the range of the microseismic monitoring network, there were many calculated source positions and the positioning error was large. The overall trend of the monitoring data of mine microseismic monitoring, stress monitoring and seismic wave CT inversion before and after the earthquakes were stable, which indicated that the weak earthquakes near the mine field had no significant impact on the mine rockburst risk. The results can provide guidance for the in-depth understanding of the impact of the natural earthquake near the mine field on the rockburst risk in coal mine, and references for the follow-up study of the development of the rockburst monitoring technology and the relationship between the earthquake and the mine rock burst.
weak earthquake; rock burst; microseismic monitoring; rock burst risk
何 岗, 贺 虎, 杨增强. 临近井田弱地震对矿井冲击危险性影响分析研究 [J]. 煤炭工程, 2023, 55(8):114-118.