卸压孔技术在深井煤巷中的实践与应用

Practice and Application on Relief Hole Technology in the Deep Seam Roadway

近年来,随着煤炭开采采深不断增加,围岩应力也随之加大。深井煤巷支护问题日益突出,锚网与工字钢棚联合支护效果不理想,且维修量大,维护费用高。义安矿通过在煤巷两帮打设卸压孔结合锚网与工字钢棚联合支护,使围岩内高应力向深部转移,改善了围岩中的应力环境,控制了围岩的变形,减轻了煤巷的支护压力,大大节约了支护成本。

In the recent yeas,with increasing mining depth of coal mining,also will increase the stress of surrounding.Deep roadway support problem becomes more severe,anchor with beam shelf combined support can not achieved good result,the maintenance and costs are large.This study,though bore same holes at coal wall and anchor with beam combined support,make the high stress of surround rock transfer to deep.Improve the surrounding environment of stress,controled of the surrounding rock deformation,reduced the stress of surrounding rock and saved cost.