千米深井半孤岛工作面冲击危险性评价与综合防治

Risk Assessment and Comprehensive Prevention of Rockburst of Peninsula Working Face in Kilometer Deep Well

针对高家堡煤矿102工作面煤层埋深大、动压显现严重,特别是半孤岛工作面结构形态加剧应力局部异常集中、煤层开采过程中存在冲击地压隐患的问题,从现场实际出发,运用综合危险性评价方法对102工作面危险性进行评价。根据实际设计了大直径钻孔卸压与煤层爆破卸压相结合的冲击地压防治方案,对类似矿井的冲击地压防治工作具有一定的借鉴价值。

Aiming at the problems of large buried depth and serious dynamic pressure in 102 working face of Gaojiabao Coal Mine,especially the aggravation of structural form of peninsula working face,the local abnormal concentration of stress and the hidden danger of rock burst in the process of coal seam mining,this paper evaluates the danger of 102 working face by using comprehensive risk assessment method.According to the actual situation,the prevention scheme of rock burst combined with large diameter borehole pressure relief and coal seam blasting pressure relief is designed,which has a certain reference value for similar mine rock burst prevention work.