极近距离煤层采空区下煤巷围岩稳定控制技术研究  

Study on Surrounding Rock Stability Control Technology of Lower Coal Roadway in Very Close Coal Seam Goaf

作　　者：陈廷学 晁宁 姚强岭[2,3] CHEN Tingxue;CHAO Ning;YAO Qiangling(Wanbei Coal-Electricity,Suzhou 234000,China;State Key Laboratory of Coal Resources and Safe Mining(CUMT),China University of Mining and Technology,Xuzhou 221116,China;School of Mines,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]皖北煤电集团公司,安徽宿州234000 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116 [3]中国矿业大学矿业工程学院,江苏徐州221116

出　　处：《煤炭技术》2022年第10期89-93,共5页Coal Technology

摘　　要：为了安全高效支护极近距离采空区下煤层巷道,实测采空区下顶板厚度变化规律后,提出了多层位注浆锚索支护。设计了II7_(3)24S工作面外风巷支护方案,并应用FLAC^(3D)模拟分析,验证了支护方案的可行性,在工程应用中获得了两道的巷道围岩支护效果,极具示范作用。In order to safely and efficiently support the coal seam roadway under the very close goaf,the variation law of the roof thickness under the goaf is measured,and the multi-layer grouting anchor cable support is proposed.The support scheme of air roadway outside II7_(3)24S working face is designed,and the feasibility of the support scheme is verified by FLAC^(3D) simulation analysis.Two roadways surrounding rock support effects are obtained in engineering application,which plays a very exemplary role.

关 键 词：极近距离采空区下开采 顶板厚度发育规律 数值模拟 巷道围岩控制效果 

分 类 号：TD322.4[矿业工程—矿井建设] TD823.81