关键词: 采矿工程, 冲击矿压, 矿震, 冲击模式, SOS微震监测技术

Abstract: Taken some working face with syncline structure and hard roof as an engineering example, time and space distribution regularity of mine tremors before two rock burst and their occurrence model were analysed and researched. Less mine tremors occured in the seam floor before ‘6.26’ rock burst. However, the crack of seam roof produced more mine tremors with larger energy. Dynamic load had played a leading role in this rock burst, which belonged to the dynamic load dominant mode. Mine tremors mainly distributed in the area of the syncline axis before ‘10.15’ rock burst. Dynamic load caused by the crack of seam roof has the triggered effect in this rock burst, which belonged to the static load dominant - dynamic load induced model. Compared to up trough, the down trough has smaller bending radius, larger curvature and higher stress concentration, in which occurred the ‘10.15’ rock burst. The study could provide important reference for the rock-burst internal mechanism exploring and micro-seismic monitoring and early warning of similar working face.