煤矿防冲安全性分类赋权评价方法及应用OA北大核心CSTPCD

In view of the current situation that mine impact risk evaluation mainly focuses on the design stage or prior to the imple-mentation of anti-impact measures,and lacks the safety evaluation of mining face after the implementation of anti-impact measures,the types of rock burst are divided into five types:coal type,coal pillar type,roof type,fault type and comprehensive type,taking in-to account the occurrence location,failure form,load type and focal location;based on the idea of classification prevention and con-trol,a classification weighted evaluation method is proposed,considering the impact of impact risk,roadway surrounding rock,mon-itoring and early warning system,anti-impact support system,anti-impact rock pressure prevention measures and anti-impact man-agement ability on anti-impact safety;the calculation formula of safety factor of anti-impact is given.The safety level of anti-impact is divided into three levels:safety,basic safety and unsafe.Taking the 31119 working face of a mine as an example,the complete process and result of anti-impact safety evaluation are given.The safety evaluation of some typical mining face with impact risk is carried out by using the classification weighting evaluation method,and the reliability of the evaluation results is verified by combin-ing with the actual impact occurrence.