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某抽水蓄能电站通风洞地质条件复杂,围岩节理裂隙发育,地下水位较高,存在大量的渗水,主要以Ⅳ类、Ⅴ类围岩为主,根据现场实际情况,在施工过程中采取了一些开挖支护施工技术,保证了隧洞安全顺利地完成。
A pumped storage power station ventilation tunnel complex geological conditions, the surrounding rock joints and fissures developed, the groundwater level is high, there is a lot of water seepage, mainly Ⅳ, Ⅴ type of rock-based, according to the actual situation in the construction process to take Some excavation and support construction technology to ensure the smooth completion of the tunnel.