松软破碎岩层大断面硐室定位注浆加固技术研究  

Roadway positioning grouting reinforcement technology for large section chamber in soft broken rock strata

作　　者：梁苗 王辉[2] 张磊[2] 褚海艳 LIANG Miao;WANG Hui;ZHANG Lei;CHU Hai-yan(Ordos Ecological Environment Vocational College,Ordos 017000,China;Ordos Vocational College,Ordos 017000,China)

机构地区：[1]鄂尔多斯市生态环境职业学院,内蒙古鄂尔多斯017000 [2]鄂尔多斯职业学院,内蒙古鄂尔多斯017000

出　　处：《煤炭工程》2020年第2期38-41,共4页Coal Engineering

摘　　要：针对松软破碎不稳定岩层中巷道变形量大、底鼓、矿压显现持续时间长等情况,先利用钻孔窥视仪探明石草台煤矿井下变电所围岩中呈现松软破碎特性的位置后,设计利用注浆锚索、注浆锚杆通过定位注浆加固不稳定围岩并辅以反悬拱控制底鼓的形式,提高了巷道围岩整体承载能力,保证了巷道支护效果,同时降低了巷道后期维护成本。In view of the large deformation of the roadway in the soft and unstable rock strata,the floor heaving and long duration of the mine pressure,the drilling and peeping instrument is used to locate the soft and broken surrounding rock of a mine substation.The grouting anchor cable and grouting anchor bolt is used for the positioning grouting to strengthen the unstable surrounding rock by and the anti-cantilever arch is used to control the floor heaving,which improves the overall bearing capacity of the roadway surrounding rock,ensures the support effect of the roadway,and reduces the maintenance costs in later period.

关 键 词：松软破碎岩层 大断面硐室 定位注浆 反悬拱 承载能力 

分 类 号：TD353[矿业工程—矿井建设]