摘要
为了保证潘北煤矿11113工作面大跨度切眼施工和支护安全,采用导硐和二次刷扩成巷法施工切眼,设计了锚网索组合支护参数,并对各施工阶段切眼表面和深部围岩变形特征、锚杆(索)和单体支柱受力特征等进行了观测,通过矿压观测分析,优化了支护参数,增设了加密木垛,取得了良好的支护效果。
In order to ensure the safety construction and support of the large span open -off cut for No. 11113 coal mining face in Panbei Mine, a pilot gateway and secondary reaming gateway method were applied to the construction of the open - off cut. The combined support parameters of the bolt/steel mesh/anchor were designed and observations were conducted on the deformation features of the open - off cut surface and the deep surrounding rock, the stress features of the bolt （anchor） and single prop and others at the each construction stage. With the analysis on the mine strata pressure observations, the support parameters were optimized, dense timber chocks were added in the open - off cut and an excellent support effect was obtained.
出处
《煤炭工程》
北大核心
2014年第3期32-34,38,共4页
Coal Engineering
基金
国家重点基础研究发展计划(973)资助项目(2010CB226806)
中国博士后基金(2012M521211)
关键词
大断面切眼
分层综采
厚煤层
锚网索支护
矿压观测
large cross section open- off cut
fully mechanized slice coal mining
thick seam
bolt/steel mesh/anchorsupport
mine strata pressure observation
