摘要
以垮落带范围内的厚硬岩层为目标层,采用地面钻孔复合压裂技术,削弱顶板结构强度,减少冒落步距,有效地解决了特厚煤层孤岛工作面开采时坚硬顶板不垮落,导致工作面压力明显,临空巷道超前支护应力集中严重等问题,在同忻煤矿8102工作面进行了成功应用。
Taking the thick and hard rock layer within the collapse zone as the target layer, the ground drilling composite fracturing technology is adopted to weaken the structural strength of the roof and reduce the caving step, which effectively solves the problems that the hard roof does not collapse during mining in the island working face of extra thick coal seam, resulting in obvious pressure of the working face and serious stress concentration of advance support in the empty roadway, It has been successfully applied in 8102 face of Tongxin coal mine.
作者
景鹏
Jing Peng(Production Technology Department of Jinneng Holding Coal Industry Group Co.,Ltd.,Datong Shanxi 037000,china)
出处
《同煤科技》
2022年第1期11-15,共5页
Datong Coal Science & Technology
关键词
孤岛工作面
强矿压
特厚煤层
坚硬顶板
Island work surface
Strong mine pressure
Extra thick coal seam
Hard roof
