切顶自动成巷无煤柱开采技术在侏罗系薄煤层的应用

Application of Coal-free Pillar Mining Technology in Jurassic Thin Coal Seam

为了研究沿空切顶卸压自动成巷技术在大同煤田侏罗系薄煤层留巷的方法,以姜家湾矿8606、8608工作面为工程背景,分析了围岩变形特点,提出相应的沿空巷道顶板及煤柱控制方案。经井下试验表明,薄煤层切顶自动成巷技术是开展无煤柱开采的优秀成果,具有极大的社会效应和经济价值。

In order to study the method of retaining roadway in Jurassic thin coal seam of Datong coalfield,taking 8606 and 8608 working faces of Jiangjiawan Coal Mine as the engineering background,the deformation characteristics of surrounding rock were analyzed,and the corresponding control scheme of roof and pillar along goaf roadway was put forward.The underground test shows that the technology of automatic roadway formation by roof cutting in thin coal seam is an excellent achievement of developing coal pillar free mining,which has great social effect and economic value.