松软底板采煤工作面支护新技术的应用

Application on New Support Technology in Loose Floor Coal Mining Face

东山井高档机采工作面底板属松软性岩层,支柱普遍钻底超过规定,尤其是两端头顶底板移近量较大,甚至出现台阶下沉,支护质量差。在长期实践中,提出了采空区侧末排支柱采用铸型尼龙大底座柱鞋,较好地解决了支柱钻底问题,为松软底板采面支护找到了一条新的途径,具有广泛的应用前景和推广价值。

The flloor of high-grade mechanized coal mining face in Dongshan well belong to loose rock strata,pillar widespread drilling bottom exceed provision,it is biggish that deformation of roof and floor of the both ends particularly,even appear step sinking support quality is bad.Puts forward to adopt in the long-term the fulfillment empty the area side end row pay the pillar adoption type nylon big base pillar shoe,solving to pay pillar to drill a bottom problem more and so much,for support of loosen floor mini...