Analysis of Rock Burst Hazard of Righ Three High Level Drainage Roadway in Lishu Coal Mine with ARES-5/E Ground Sonic System

In order to obtain relaxed energy，frequency and outburst hazard of rock mass during advancing process of right three high level drainage tunnel in Lishu coal mine，the ground sonic data of the tunnel was analyzed.The results showed that energy relaxation character appeared as ‘high energy-low energy-high energy-low energy-high energy’，frequency character like as‘ low frequency -high frequency -high frequency-high frequency-low frequency’，according acoustic emission event，energy and average energy，the area within 80m to working face was relative safety，the scope 80～170m to working face was relative dangerous，the scope 170～210m to working face was relative dangerous，according data that collected from January 2^nd to 8^th ，the hazard could be forecast 4～5 days in advance，then some schemes could be put forward，and hazard could be relaxed.