深部巷道大变形破坏机理及返修支护策略分析

Deep roadway large deformation damage mechanism and rework support strategy analysis

本文将潞安集团五阳煤矿7608回风巷出现的大变形破坏作为研究对象,通过现场勘查可知,巷道整体出现了较为明显的变形破坏,结合现场勘查、理论分析,得出导致巷道出现较大变形破坏的主要原因是,工程地质力学复杂、巷道埋深较大、原支护设计及材料选择不够合理。结合回风巷所处实际地质条件,设计采用了“恒阻大变形锚杆/索+钢带+钢筋网耦合支护”的耦合支护方案,从巷道返修情况来看,取得了较好返修效果,对类似巷道的支护有一定的借鉴意义。

In this paper,the large deformation damage in the 7608 air return roadway of Wuyang Mine of Lu'an Group was taken as the object,and the overall deformation damage of the roadway was obvious through the site investigation.Combined with the actual geological conditions of the return roadway,constant resistance large deformation anchor/cable+steel belt+steel mesh coupling support coupling support scheme was adopted,from the roadway repair,with good repair results and reference for similar roadway.