浅埋煤层覆岩离层开裂极限跨距研究  

Research on Critical Span of Overlying Strata Separation in Shallow Buried Coal Seam

作　　者：徐晓鼎 周跃进[2] 庞顺 李晓彤 XU Xiao-ding1,2, ZHOU Yue-jin2, PANG Shun2, LI Xiao-tong1,2(1.School of Menchanics and Civil Engineering, China University of Mining and Technology, Xuzhou 221008, China; 2.State Key Laboratory for Geomechanics and Deep Underground Engineering, China University of Mining and Technology, Xuzhou 221008, Chin)

机构地区：[1]中国矿业大学力学与土木工程学院,江苏徐州221008 [2]中国矿业大学深部岩石力学与地下工程国家重点实验室,江苏徐州221008

出　　处：《煤炭技术》2018年第6期81-83,共3页Coal Technology

摘　　要：为解决浅埋煤层"三下"开采引起的地表沉陷问题,从"离层-注浆-减沉"角度出发,以分析离层发展机理为先要,基于岩梁理论和最大线应变理论来研究浅埋深覆岩离层发展破坏规律,得出离层岩梁开裂的极限跨距理论公式;运用该开裂理论分析了浅埋深大采高某矿井离层岩梁开裂跨距。In order to solve the shallow buried coal seam ＂under three＂ mining subsidence problems, from separation grouting to reduce subsidence angle, to analyze the development mechanism for the first separation, based on rock beam theory and maximum strain theory to study the shallow overburden failure law of development, the limited span theory formula of separation rock beam crack; cracking by using this theory to analyze the shallow deep mining high mine rock beam span.

关 键 词：覆岩离层 浅埋深 第二强度理论 极限跨距 

分 类 号：TD325[矿业工程—矿井建设]