水影响下软岩巷道变形规律及其控制

Deformation laws of roadway in soft rock under effect of water and its control

为了解决富水条件下软岩巷道的支护问题,以软岩饱水状态下的力学实验及现场实践研究为基础,分析了富水软岩巷道变形特征,探讨了水化软岩巷道的支护方法,研究结果认为:软岩巷道受水化影响显著,在施工中需要注意防水措施;对于水影响软岩巷道的支护关键在于二次支护的刚度选择,选用大刚度的U型钢可缩性支架效果较好。

In order to solve the support problem in soft rock under rich water condition,based on mechanics test of soft rock soaked in water and field practice,the deformation features and support methods for soft rock roadway were analyzed。The conclusions are as followr:oadway of soft rock is significantly affected by hydration,tpreventing hydration is needed during construction.the key to support of soft rock is the secondary support stiffness and U-steel yieldable supporter,of bigger stiffness was effective application.The results have been verified through the engineering practice.