胡家河冲击地压防治及爆破卸压效果分析

Analysis of Hujiahe Rock Burst Prevention and Blasting Pressure Relief Effect

胡家河作为强冲击地压矿井,危险指数高,采取科学的防治技术,能够预防矿井冲击地压灾害发生。论文对401111工作面冲击危险区域进行划分,提出冲击地压危险防治体系,对爆破卸压效果进行考察。结果表明,胡家河矿共划分8处强冲击危险区和7处中等冲击危险区域;401111回采工作面采用大直径钻孔卸压、煤层注水、顶板预裂爆破等方案对冲击危险区域进行主动解危;401111工作面回风巷爆破后,相邻孔孔壁上出现比较明显的裂隙。

As a strong rock burst mine,Hujiahe has a high risk index.Adopting scientific prevention and control technology can prevent the occurrence of mine rock burst disaster.In this paper,the impact risk area of 401111 working face was divided,and the risk prevention and control system of rock burst was put for ward,and the effect of blasting pressure relief was investigated.The results show that Hujiahe Mine is divid ed into 8 strong impact risk areas and 7 medium impact risk areas.The 401111 working face adopts large-diameter borehole pressure relief,coal seam water injection,roof pre-splitting blasting and other schemes to actively solve the dangerous area of impact.After the blasting of the return airway of the 401111 working face,there are obvious cracks on the wall of the adjacent holes.