朱家店煤矿近距离煤层沿空留巷开采技术研究

Research on Gob Side Entry Retaining Mining Technology in Close Distance Coal Seam of Zhujiadian Coal Mine

针对朱家店煤矿近距离煤层沿空留巷开采时布置问题,通过钻孔窥视以及现场实践等方法,以矿井0403-Ⅰ回采工作面为研究基础,确定了沿空留巷开采技术方案,保证了矿井安全高效回采。通过实践验证:顶板定向预裂爆破、恒阻大变形锚索支护、采空区防漏设计等设计符合朱家店煤矿实际情况,为同类型矿井提供了技术基础。

Aiming at the layout problem of gob side entry retaining mining in close distance coal seam of Zhujiadian coal mine,through drilling peep and field practice,based on the research of 0403-I working face,the technical scheme of gob side entry retaining mining is determined,which ensures the safe and efficient mining of the mine.The practice shows that the design of directional presplitting blasting of roof,constant resistance and large deformation anchor support,and leakage prevention design of goaf conform to the actual situation of Zhujiadian coal mine,which provides technical basis for the same type of mine.