A Study on Rules of Mine Fault Activation in Rock Burst Based on Microseism Monitoring Technology

Based on real-time on-line monitoring of microseismic events, during mining of 21141 working face, conducted by Qianqiu Coal Mine through applying microseismic monitoring technology, this paper determines the statistics and analysis of microseismic events, and based on statistics and analysis results, summarized the rules of impact of mining activities on fault activation. The results show that microseismic events concentrate at fault zone, and mining activities will affect the stability of fault; the fault begins to activate when coal working face is 90m from the fault and activates most violently when coal working face is 40-20 m from the fault.