松软突出煤层工作面瓦斯治理实践

针对临涣煤矿松软突出煤层工作面顺层钻孔施工遇到的问题,在改进钻进装备、钻进工艺后,钻孔进尺效果仍不理想的情况下,根据工作面煤层赋存状况,重点从瓦斯治理工程方面进行方案调整,创新性采用高位钻场内施工顶板穿层钻孔预抽、工作面面内大功率钻机施工超前卸压排放钻孔等一系列消突措施,多措并举,避开了松软突出煤层顺层钻孔施工遇到的瓶颈,消除了煤层突出危险性,保证了工作面的安全回采,取得了良好的治理效果。

Practice of Gas Control in Soft and Outburst Coal Face

For problems encountered in drilling along soft outburst coal seam in Linhuan Mine,after improving drilling equipment,drilling technology,drilling footage effect is still not ideal.According to gas deposit in working face,the engineering scheme of gas management is modified.A series of innovative measures simultaneously,including pre-drilling of penetration boreholes through roof from high-located auger field and advanced pressure relief drill holes by high-power drilling machine in working face,avoided the bottleneck of drilling along soft outburst coal seam.The danger of outburst is eliminated,the safety of working face mining is guaranteed,and the desired result is obtained.