过断层特大断面厚煤顶煤巷破坏机理及围岩控制技术  

Coal Roadway Failure Mechanism and Surrounding Rock Control for Thick Roof Coal with Large Section Passing Through Fault

作　　者：姚再峰 卫文彬 魏臻[1] 时宝[1] 何富连[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤矿安全》2015年第3期22-24,28,共4页Safety in Coal Mines

基　　金：国家自然科学基金资助项目(51234005);国家重点基础研究发展计划资助项目(2010CB226802);中央高校基本科研业务费专项资金资助项目(2010YZ02)

摘　　要：为了研究过断层特大断面厚煤顶煤巷围岩破坏失稳机理及其控制技术,以山西省东坡煤矿9#煤层923材料巷在相邻工作面回采过程中发生严重变形破坏为工程背景,采用UDEC离散元数值分析的手段,模拟了923材料巷受相邻工作面采动影响下破坏的过程。揭示巷道围岩破坏机理,提出采用"桁架锚索+锚网带"的围岩控制技术,实现了有效控制顶板冒落和围岩剧烈变形。In order to study the damage instability mechanism and control technology for thick coal with large section roadway passing through fault,we take the severe deformed damage occurred in the course of the adjacent coal mining at 923 material lane in 9#coal seam of Dongpo Coal Mine in Shanxi as engineering background. We use theoretical analysis and discrete element numerical analysis method to simulate the damaged process at 923 material effected by mining under the adjacent lane. We reveal the failure mechanism of roadway,propose the use of ＂ truss anchor ＋ anchor mesh belt＂ surrounding rock control technology to achieve effective control of severe roof caving and rock deformation.

关 键 词：特大断面 采动影响 离散元 桁架锚索支护 破坏机理 

分 类 号：TD353[矿业工程—矿井建设]