加拿大雷维尔斯托克水电站在施工期间导流隧洞进口边坡出现岩石滑坍,设计安装了长21～43m、43～2500kN级的预应力锚杆系统,边坡加固取得了明显效果,在导流期间岩体相当稳定。在左坝肩开挖过程中,采用灌浆插筋代替预张拉锚杆进行支护,节省了大量时间。 During the construction, the Reinholdstock Hydropower Station of Canada has experienced rock slump on the inlet slope of the diversion tunnel. Prestressed anchor systems of 21 ~ 43m in length and 43 ~ 2500kN in length have been designed and installed. The slope reinforcement has achieved remarkable results. The rock mass is quite stable during the flow. In the excavation process of the left abutment, grouting tendons instead of pre-tensioned bolt support, saving a lot of time.