深部高应力软岩巷道变形破坏机理及稳定性控制策略研究

Study on the deformation failure mechanism and stability control strategy of deep high stress soft rock roadway

对荣泰煤矿-760西运输大巷出现的大变形破坏进行研究,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偏大。充分结合大巷所处地段地质应力条件,设计了“锚网索喷+局部注浆加强”返修支护策略,从返修情况来看,大巷整体稳定性得到控制,对类似巷道支护有一定的借鉴作用。

Based on the large deformation damage of the Rongtai-760 west transportation roadway,the main reason for the apparent deformation damage of the lane is the high and complex ground stress in the location of the lane,with the poor lithology of the surrounding rocks,the low strength of the original support and the seriousness of the tectonic stress.Fully combined with the roadway where the geological stress conditions,"anchor net cable spraying+local grouting to strengthen"repair support strategy was designed,from the repair situation,the overall stability of the alley was controlled,with certain reference.