二次扰动下大变形煤巷复合支护技术优化研究  

Optimization of compound supporting in large-deformation coal roadway under secondary disturbance

作　　者：薛彦平 XUE Yan-ping(CCTEG Shenyang Research Institute,Fushun 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun 113122,China)

机构地区：[1]中煤科工集团沈阳研究院有限公司,辽宁抚顺113122 [2]煤矿安全技术国家重点实验室,辽宁抚顺113122

出　　处：《煤炭工程》2021年第9期47-51,共5页Coal Engineering

基　　金：“十三五”大型油气田及煤层气开发科技重大专项资助项目(2016ZX05045-004-001)。

摘　　要：为有效治理王坡煤矿生产过程中工作面巷道变形带来的安全隐患,选取王坡煤矿3209工作面回风巷为研究对象,采用现场调研、理论分析和现场监测相结合的方法对巷道支护技术方案进行优化研究,分析了3209工作面回风巷矿压显现剧烈、围岩变形大的诱因,提出高压注浆配合强力锚索支护的复合支护技术方案,通过现场应用对支护效果进行检验。结果表明:优化支护巷道围岩整体完整,破碎离层区较小;优化支护巷道两帮相对移近最大值为54mm,优化支护顶板最大离层量为19mm,优化后的围岩变形与顶板下沉距离较小,有效控制巷道变形,优化支护技术方案护巷效果显著。In order to control the hidden danger caused by the deformation of working face roadway during mining in Wangpo Coal Mine,the air return roadway of 3209 working face in Wangpo Coal Mine was selected as the research object,and the roadway support technical scheme was optimized by field investigation,theoretical analysis and field monitoring.Inducement of the strong mine pressure behavior and large deformation of surrounding rock was analyzed,and a compound supporting scheme was proposed using high-pressure grouting and strong anchor cable support,and the supporting effect was tested in field application.The results show that the surrounding rock is integral,the fracturing and separating area is small,and the original support roadway surrounding rock is large.The maximum side-to-side convergence of the optimized support roadway is 54 mm,and the maximum separation of roof is 19 mm,the surrounding rock deformation and roof subsidence distance is small,demonstrating that the roadway deformation is under control,and the supporting effect is favorable.

关 键 词：二次扰动 大变形煤巷 复合支护 注浆加固 锚索支护 

分 类 号：TD353.6[矿业工程—矿井建设]