大倾角煤层巷道变形破坏机理与支护对策研究  

Deformation Failure Mechanism and Support Measurements in Roadway of Steeply Inclined Coal Seam

作　　者：张蓓[1] 曹胜根[1] 王连国[2] 陆银龙[2] 

机构地区：[1]中国矿业大学煤炭资源与安全开采国家重点实验室,矿业工程学院,江苏徐州221008 [2]中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏徐州221008

出　　处：《采矿与安全工程学报》2011年第2期214-219,共6页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2010CB226805);国家自然科学基金项目(50774078,50874103);江苏省自然科学基金项目(BK2008135);江苏高校优势学科建设工程项目;江苏省“青蓝工程”项目

摘　　要：基于大倾角煤层巷道围岩破坏特征现场探测信息,建立了不同岩层倾角下巷道围岩变形破坏的数值计算模型,研究了大倾角煤层巷道围岩非对称变形破坏机制,得出围岩变形破坏的关键部位.在此基础上,提出大倾角煤层巷道围岩关键部位非对称耦合支护对策.结果表明:随着岩层倾角增加,巷道围岩变形破坏表现出明显的非对称性,通过对围岩变形破坏的关键部位进行非对称耦合支护,能够有效地实现支护与围岩之间变形协调,显著地控制围岩的非对称变形破坏.Based on the detected information of destruction features in the surrounding rocks of roadways in coal seam with a steep dip angle,we built the numerical computation model of damage of the surrounding rocks of roadways in different dip angles and studied the deformation and asymmetrical failure mechanism of the surrounding rocks of roadways in the coal seam.As a result,we found the deformation and failure of the key parts of the surrounding rocks.On this basis,an asymmetric coupled support measurement in some key positions in the surrounding rocks of roadways is proposed.The result indicats that,along with the increases of the dip angles of rock layer,the distortion and destruction of the roadways displays an obvious asymmetry.Through asymmetric compellingly supporting the key parts of the deformation and failure of the surrounding rocks,we can effectively achieve the deformation coordination between support and surrounding rocks and effectively control the asymmetric deformation and failure of the surrounding rocks.

关 键 词：煤层巷道 非对称 变形破坏 耦合支护 

分 类 号：TD31[矿业工程—矿井建设]