Risky region prediction and analysis about coal and gas outburst in Shi-hao coal mine

Analyzing the statistic data of Shi-hao coal mine,we got that the depth of coalbed,geological structure,crustal stress and the structure of outburst coal are the primary factors of coal and gas outburst.To predict the risky region,the gas geology statistics and comprehensive index method are taken,and show that M_6-3,M_7-2 and M₈ coal area are dangerous.Protection should be strengthened in mining so that accidents can be prevented.