Study on Optimization of Regional Outburst Prevention Measures for First Mining Face of Outburst Seam

To counter the problems of large amount of engineering，long construction period and highly economic cost in the process of the implementation of the existing regional outburst prevention measures in Yuxi Coal Mine，in this paper，five indicators including the engineering amount，construction period，safety reliabilty，technical feasibilty and economic rationality of four regional outburst prevention measures were investigated by using the fuzzy evaluation method，and the best regional outburst prevention measure was selected．The results showed that the measure of gas draiange by underground crossing boreholes and the holes drilled along the seam(the unilateral floor draiange roadway)was the best regional outburst prevention measure，its quantitative score was 0．3，larger than the quantitative result of other three regional outburst prevention measures．In order to ensure the application effect of the regional outburst prevention measures in this area，corresponding support techniques for the regional outburst prevention measures should be adopted according to the site conditions．