孤岛回采工作面冲击危险性评价及防治监测

Burst Risk Evaluation,Monitoring,and Prevention of Isolated Island Mining Face

冲击地压事故在煤矿频发,其具有的突发性及破坏性等特点严重威胁着煤矿安全生产,煤矿生产过程中对冲击地压的预测和防治非常重要。本文基于山西金晖隆泰煤业9109孤岛工作面的地质资料,结合实测煤岩力学数据、冲击倾向性鉴定结果,采用综合指数评价法对9109工作面煤层和顶、底板的冲击危险性进行评价,针对评价结果提出了孤岛工作面冲击地压监测防治体系,实践取得了较好的效果,为孤岛回采工作面安全、高效生产提供了技术保障。对相似地质条件矿井开采类似孤岛工作面具有一定的参考价值。

Rock burst accidents occur frequently in coal mines and their sudden and destructive nature seriously threatens the safe production in coal mines.Therefore,it is important to predict and prevent rock burst.Based on the geological data of the 9109 isolated island working face in Longtai Coal Industry,combined with the coal and rock mechanics data and identification results of impact tendency,the comprehensive index evaluation was used to evaluate the burst risk of the working face,roof,and floor.Based on this,a monitoring and prevention system of rock burst in the isolated island working face is proposed and good results have been achieved in practice.It provides technical supports for the safe and efficient production and has reference significance for the similar isolated island faces with similar geological conditions.