煤矿软岩巷道顶底板剪切变形破坏机理  

Mechanism of roof-floor shearing deformation and breakage in coal mine of soft rock roadway

作　　者：伍永平[1] 王超[2] 李慕平 曾佑富[1] 黄超慧[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]内蒙古科技大学资源学院,内蒙古包头014010 [3]铜川矿务局,陕西铜川727000

出　　处：《西安科技大学学报》2007年第4期539-543,共5页Journal of Xi’an University of Science and Technology

摘　　要：通过石嘴山一矿38区+600 m轨道巷表面收敛监测及变形破坏的研究,总结出了变形破坏特征。以矿山压力假说为前提,对巷道围岩典型破坏特征作出理论推断,建立巷道顶底板的力学模型,并应用关键层理论、块体理论、弹性力学对巷道变形破坏进行理论分析与求解,得出了巷道顶底板发生剪切破坏判定条件,并用FLAC3D数值模拟验证其正确性,为深部巷道支护提供了新的理论依据。According to the research on the exterior convergence monitoring and breakage of the roadway of ＋ 600 m level at No. 38 mining zone of No. 1 Coal Mine of Shizuishan, the breakage character of roadway are summarized. Based on the underground pressure theory, the typical breakage character of surrounding rock are deduced in theory, the mechanical model of the roof-floor is set up, and the key strata theory, the block theory and the elasticity mechanics are applied in studying the deformation and breakage of roadway. The breakage qualification is concluded, the legitimacy is validated by FLAC^3Dnumerical simulation. These provide new evidences for roadway＇s support in deep mining.

关 键 词：深部软岩 剪切滑移 弱面 数值模拟 

分 类 号：TD32[矿业工程—矿井建设]