沿空留巷二次采动影响煤巷破坏规律研究  

Research on Failure Law of Coal Lane of Gob-side Entry Retaining Influenced by Secondary Mining

作　　者：高永格[1,2] 梁建[2] 

机构地区：[1]中国矿业大学(北京)地球科学与测绘工程学院,北京100083 [2]河北工程大学资源学院,河北邯郸056038

出　　处：《煤炭技术》2017年第1期6-8,共3页Coal Technology

基　　金：国家自然科学基金项目(51474217)

摘　　要：以云驾岭煤矿12305工作面回风巷为研究对象,运用FLAC3D数值模拟技术对巷道围岩应力变化进行数值模拟计算,并结合现场实测对巷道围岩变形和锚杆锚索受力进行观测分析。结果表明:二次采动时回风巷变形破坏较为严重,工作面距离测站10 m时巷道截面积为初始面积的50%。Taking Yunjialing coal mine 12305 tailentry as research object,use the FLAC^3D numerical simulation technology to calculate the stress change of surrounding rock of roadway and combination with the field test observed and analyzed surrounding rock and the force of bolt and anchor cable.The results of the study show that the air return way more serious damage and when working face distance measuring station 10 m that the area of the roadway is 50% of the initial area during the secondary mining influence period.

关 键 词：沿空留巷 二次采动 围岩变形 

分 类 号：TD32[矿业工程—矿井建设]