软弱破碎围岩煤层巷道支护技术应用分析  

Application Analysis of Roadway Supporting Technology with Soft and Broken Surrounding Rock Coal Seam

作　　者：魏治刚 Wei Zhigang(Shanxi Wangjialing Coal Industry Co.,Ltd.,Xinzhou,Shanxi 036604)

机构地区：[1]山西王家岭煤业有限公司,山西忻州036604

出　　处：《江西煤炭科技》2023年第4期73-75,共3页Jiangxi Coal Science & Technology

摘　　要：针对同宝煤业15106运输顺槽巷道施工期间因巷道围岩破碎、地质条件复杂等因素影响,围岩出现变形大、难支护等问题,通过分析围岩变形破坏原因,拟采用“注浆+锚杆索”支护方案。新支护方案应用表明,巷道过围岩破碎段掘进期间,顶板最大下沉量约为30.7 mm,巷道两帮围岩变形最大约为23.8 mm,浅基点处顶板离层量累计3.7 mm,深基点处顶板离层量累计6.2 mm,围岩变形破坏得到有效控制。In response to the problems of large deformation and difficult support of the surrounding rock during the construction of Tongbao Coal Industry's 15106 transportation tunnel due to broken surrounding rock and complex geological conditions,the"grouting and anchor cable"support plan is proposed by analyzing the reasons for the deformation and damage of the surrounding rock,whose application shows that during the excavation of the tunnel through the broken section of the surrounding rock,the maximum subsidence of the roof is about 30.7 mm,the maximum deformation of the surrounding rock on both sides of the tunnel is about 23.8 mm,the cumulative separation of the roof at the shallow base point is 3.7 mm,and the cumulative separation of the roof at the deep base point is 6.2 mm,which effectively controls the deformation and damage of the surrounding rock.

关 键 词：巷道 围岩破碎 支护方式 注浆加固 锚杆(索) 

分 类 号：TD353[矿业工程—矿井建设]