海石湾矿6112回风平巷变形破坏机理及治理技术  

Deformation Failure Mechanism and Control Technology of 6112 Return Air Drift in Haishiwan Coal Mine

作　　者：杨云峰 王君得 赵家巍[2,3] 

机构地区：[1]窑街煤电集团有限公司,甘肃兰州730084 [2]煤炭资源与安全开采国家重点实验室,江苏徐州221008 [3]中国矿业大学,江苏徐州221008

出　　处：《煤矿安全》2012年第8期82-85,共4页Safety in Coal Mines

摘　　要：为了解决海石湾矿煤一层6112工作面回风平巷大变形问题,研究了巷道变形破坏机理,并从巷道重新布置和锚杆支护参数优化2个角度分别提出2套解决方案,现场实测结果表明,采用HRB335高强锚杆配合18.9 mm小孔径预应力锚索的稳定性控制技术对巷道进行翻修以后,回风平巷顶底及两帮移近量均得到有效控制,杜绝了以往巷道反复维修的困境。In order to solve the problem of large deformation of 6112 working face in return air drift of Haishiwan coal mine No. 1 coal seam, the paper studied the deformation mechanism, and proposed two sets of solutions from the aspects of roadway re - arrangement and the optimization of bolting parameters. Field test results showed that after roadway repairing by using the stability control technology of HRB335 high strength anchor with618.9 small - bore prestressed anchor cable, the convergence of roof and floor and two sides of re- turn air drift had been effectively controlled, which eliminated the problems of roadway repeated maintenance in the past.

关 键 词：回采巷道 大变形 高强预应力锚杆 巷道翻修 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]