房柱式采空区下综采工作面顶板控制技术

Room and Pillar under the Goaf of Fully-mechanized Working Face Roof Control Technology

以唐渠沟煤矿房柱式采空区下综采工作面顶板管理为背景,利用泄压爆破技术处理房采区集中煤柱,针对爆破对象不同设计了不同的爆破方案并现场进行了实施,结果表明,爆破后地表产生大量超前裂隙,位于煤柱及顶板岩层中的测点发生了不同程度的移动,现场矿压显现不明显,证明22煤煤柱在爆破后已经失稳,从而有效地避免了过煤柱期间冲击矿压灾害的发生,爆破效果显著。

In room and pillar tang conduit coal mine goaf of fully mechanized working face roof management as the background,using the pressure release blasting technology processing room mining area coal,according to different design for different blasting blasting scheme and implementation of the scene,the results show that the surface produces a large number of advanced fracture after blasting,the coal pillar and roof strata of different degrees of mobile station and the mine pressure appear is not obvious,and prove that 22 coal pillar has instability after blasting,thus effectively avoid the rock-burst disaster occurred during coal pillar,the blasting effect is remarkable.