深部高应力条件下官地矿中四区轨道巷返修支护措施分析  

Analysis of the support measures for the repair of the track roadway in the fourth area of Guandi Coal Mine under the condition of deep high stress

作　　者：孙乐 SUN Le(Shanxi Coking Coal Group Guandi Coal Mine,Taiyuan Shanxi 030022,China)

机构地区：[1]山西焦煤集团官地矿,山西太原030022

出　　处：《山西化工》2020年第5期130-132,共3页Shanxi Chemical Industry

摘　　要：将官地煤矿中四区轨道巷出现的大变形破坏作为研究对象,对巷道出现的变形破坏特征进行了研究,得到导致巷道出现明显变形破坏的主要原因是巷道所处地段地应力较高且较为复杂、围岩岩性较差、原支护强度偏低及构造应力较为严重等。充分结合巷道所处地段地质应力条件,设计了“锚网索喷+局部注浆加强+局部卸压”返修支护策略,从返修情况来看,巷道整体稳定性得到控制,对类似巷道支护有一定的借鉴作用。This paper takes the large deformation and failure of the track roadway in the fourth area of Guandi Coal Mine as the research object,and studies the deformation and failure characteristics of the roadway.It is found that the main reasons for the obvious deformation and failure of the roadway are the high and complex ground stress,the poor lithology of the surrounding rock,the low strength of the original support and the serious structural stress in the section where the roadway is located.Combined with the geological stress conditions of the section where the roadway is located,the repair support strategy of"bolt mesh and cable spraying+local grouting strengthening+local pressure relief"is designed.From the repair situation,the overall stability of the roadway is controlled,which has a certain reference for similar roadway support.

关 键 词：深部高应力 轨道巷 返修支护 措施 分析 

分 类 号：TD353[矿业工程—矿井建设]