切顶卸压留巷技术在泰山隆安煤矿11301工作面应用

Application of cutting technology in 11301 working surface of Taishan Long'an Coal Mine

沿空留巷技术的实施可有效解决预留煤柱问题,减少资源浪费。由于顶板上覆岩层连续性,采空区垮落后未导致留巷上覆岩层应力紊乱。为解决该问题,以泰山隆安煤矿11301工作面留巷为研究对象,运用数值模拟的方法模拟研究采用切顶卸压技术和不采用该技术巷道上覆岩层应力云图,并在11301回风巷实施了切顶卸压技术,实施完成后进行了效果考察,考察结果显示,运用爆破技术形成的切顶卸压裂隙有效解决了留巷上覆岩紊乱的现象。

The implementation of the retaining technology along the empty lane can effectively solve the problem of reserved coal column and reduce resource waste.Due to the continuity of the overburden layer on the top slab,the collapse of the mined space area did not lead to the stress disorder of the overburden layer on the remaining lane.To solve this problem,with the working surface of Taishan Longan Coal Mine 11301 as the research object,the method and the stress cloud map of the 11301,the results showed that the fracturing gap formed by blasting technology effectively solved the phenomenon of rock disorder.