孤岛工作面开采过程中矿压的监测及分布规律  

Monitoring and Distribution Law of Mine Pressure in Mining Process of Isolated Island Working Face

作　　者：王冲 余峰 Wang Chong;Yu Feng(Huaneng Lingtai Shaozhai Coal Industry Company,Gansu Pingliang 744401)

机构地区：[1]华能灵台邵寨煤业公司,甘肃平凉744401

出　　处：《山东煤炭科技》2023年第2期153-156,共4页Shandong Coal Science and Technology

摘　　要：为对孤岛条件下煤炭资源的开采回收提供矿压分布规律,通过布局优化监测了孤岛工作面下的矿压分布,得到了孤岛工作面开采过程中矿压的分布规律。结果表明:孤岛条件回采中,工作面30 m以内巷道变形速度明显加快,而在距工作面18 m左右巷道围岩移近速度加快,根据围岩变形及受力确定类似条件下的超前支护范围应该大于30 m。In order to provide the law of mine pressure distribution for the mining and recovery of coal resources under the isolated island condition,the mine pressure distribution under the isolated island working face is monitored through layout optimization,and the distribution law of mine pressure in the mining process of the isolated island working face is obtained.The results show that mining under the isolated island condition,the deformation speed of the roadway is obviously accelerated within 30 m of the working face,and the moving speed of the left and right surrounding rock of the roadway is accelerated when it is about 18 m from the working face.According to the deformation and stress of the surrounding rock,the range of advance support under similar conditions should be more than 30 m.

关 键 词：孤岛工作面 矿压监测 矿压分布 安全回采 

分 类 号：TD323[矿业工程—矿井建设]