探析沿空留巷工作面留巷巷道变形控制方法

Study on the Deformation Control Method of Roadway Along Goaf

我国某煤矿开采工作面采用了沿空留巷技术,在工作面回采工作完成之后,留巷巷道内部的顶板出现下沉底板区域出现突起,并且两侧区域范围内出现的位移量相对较大,针对上述问题该煤矿开采单位采用了巷道下沉严重段注浆锚索顶板加固技术、轻微补强锚索、顶板加固技术来有效控制煤矿巷道产生进一步形变问题,以此来保证整个煤矿开采工作面的安全稳定工作和运行。

The gob side entry retaining technology is adopted in a coal mining face in China.After the completion of the working face,the roof in the entry appears the protrusion of the sinking floor area,and the displacement in the area on both sides is relatively large.In view of the above problems,the coal mining unit adopts the grouting anchor cable roof reinforcement technology in the serious sinking section of the entry,with slight reinforcement Anchor cable and roofr einforcement technology can effectively control the further deformation ofc oal mine roadway,so as to ensure the safe and stable operation of the whole coal mining face.