Unified Mechanism of Rock Burst Induced by Coal Mine Earthquake and Its Activity and Response Characteristics

The occurrence regularity of the coal mine earthquake under influence hard roof, fault, and mining was studied by theoretical analysis, field investigation, monitoring data analysis for phenomenon rock burst induced earthquakes. dissipation characteristics energy propagation considering a hypocenter scale were described, response analyzed. two principles fractured type earthquakes three principle fault described. Based on this, unified mechanism different types proposed. results show that microseismic increases sharply decreases when in area. amplitude frequency support resistance increased before after heavy occurred. periodic 43upper 13 working face Dongtan there are 50 m small periods within 100 large periods. multiparameter can make it possible instantaneous capture dynamic responses. is difference between superposition source region consumed coal-rock instability suddenly action Meanwhile, violent accident occurs stiffness condition satisfied.