布东水电站引水隧洞岩体塑性变形的处理

Rockmass plastic deformation treatment for diversion tunnel of Budong HPP

根据布东水电站无压引水隧洞围岩产生的塑性变形特点,结合施工进程中的实际情况,采用了挂钢筋网、喷混凝土、拱架及锚杆等处理措施限制岩体塑性变形,取得了良好效果。

According to the features of plastic deformation seen in the surrounding rock of free-flow diversion tunnel of Budong Hydropower Plant, and combined with the actual conditions of construction, treatment mea- sures including mesh reinforcement, sprayed concrete, arch frame and anchor bars were adopted to limit the rockmass plastic deformation, rendering good effect.