三道湾水电站地下厂房塌方处理

Treatment of Collapse in Underground Powerhouse of Sandaowan Hydropower Project

三道湾水电站厂房塌方处理采用先监测、搭建竖向临时支撑、挂主动防护网、喷射聚丙烯纤维混凝土、锚杆、挂钢筋网,再由外至内进行安装间穹顶深层支护,最后进行清碴及孤石解爆等措施,满足设计要求,取得了良好效果。

The collapse in the underground powerhouse of Sandaowan Hydropower Project is treated by monitoring, providing the temporary vertical support, positive protection network, polypropylene fiber shotcrete, anchor bar, wire mesh, etc, at first; then deep support at crown of erection bay from outside to inside, muck out and individual rock blasting, etc.. This support satisfies design requirement and achieves expected effect.