摘要
本文以钱家营矿1692工作面为背景,采用比值判别法、“三带”判别法、围岩平衡法以及数值模拟的方法来研究9煤层上行开采的可行性。结果表明,9煤层1692工作面位于12煤层冒落带上方的裂隙带之中,受采动影响较小,煤层间距也满足了上行开采的要求。通过将上行开采和下行开采2种开采模式对比分析,得出上行开采相对下行开采而言,工作面以及巷道处于低应力区域,有利于巷道的布置和采场矿压管理。研究表明对9煤层进行上行开采具有可行性。
Based on the background of No.1692 Face of Qianjiaying Coal Mine,the feasibility of upward mining of No.9 coal seam is studied by using ratio discrimination method,"three zones"discrimination method,surrounding rock balance method and numerical simulation method.The results show that the No.1692 Face of No.9 coal seam is located in the fracture zone above the caving zone of No.12 coal seam which is less affected by mining,and the distance between coal seams also meets the requirements of upward mining.Through the comparative analysis of the two mining modes of upward mining and downward mining,it is concluded that compared with the downward mining,the working face and roadway are in the low stress area,which is beneficial to the layout of roadway and stope pressure management.It can be seen from this study that the upward mining of No.9 coal seam is feasible.
作者
刘建军
刘建庄
靖学颖
Liu Jianjun;Liu Jianzhuang;Jing Xueying(Kailuan Energy Chemical Co.,Ltd.,Tangshan 063012,China;Hebei Key Laboratory of Mineral Development&Security Technology,North China University of Science and Technology,Tangshan 063210,China)
出处
《煤炭与化工》
CAS
2022年第5期18-21,共4页
Coal and Chemical Industry
关键词
近距离煤层
上行开采
比值判别法
数值模拟
closed coal seams
upward mining
ratio discriminant method
numerical simulation
