采矿与安全工程学报2011，Vol.28Issue(1)：22-27,6.
旗山矿倾斜煤夹层巷道破坏机理及支护设计研究
Failure Mechanism and Support Design of Interclated Roadway Surrounding Inclined Coal Seam in Qishan Coal Mine
摘要
Abstract
To control the stability of deep roadway with a large deformation at a depth of 1 032 m in Qishan coal mine, we discuss the main factors through the experiment of mechanical properties of surrounding rocks, the analysis of mineral and microscopic view, the level of crustal stress, and the numerical analysis. The result shows that the unsability is caused by the soft rock character, rock mass containing coal intercalation, heavily stressed, and irrational support design. The failure mechanism of the roadway is disclosed, indicating that the rock mass containing weak coal intercalation leads to the asymmetric deformation. Based on the research result, the key position of surrounding rock with asymmetric deformation is strengthened by the support of anchor cable in the newly design. The injected bolt and floor bolt reduce the discrepancy deformation and hance effectively improving the stability of roadway surrounding rock masses.关键词
深部巷道/倾斜煤夹层/非对称变形/破坏机制/支护设计/数值模拟Key words
deep roadway/ inclined coal intercalation/ asymmetric deformation/ failure mechanism/ support design/ numerical simulation分类
矿业与冶金引用本文复制引用
张国锋,曾开华,张春,金龙..旗山矿倾斜煤夹层巷道破坏机理及支护设计研究[J].采矿与安全工程学报,2011,28(1):22-27,6.基金项目
国家重点基础研究发展计划(973)项目(2006CB202200) （973）
