高性能喷射混凝土在白莲河抽水蓄能电站中的应用

Application of High-performance Shotcrete in Bailianhe Pumped-storage Power Station

在白莲河抽水蓄能电站地下厂房及隧道施工中使用了高性能喷射混凝土。实践表明,高性能喷射混凝土很好地满足了新奥法施工的要求,其泵送性好、一次喷射厚度大、早期强度高、后期强度损失小、回弹率小、与围岩粘接效果好、粉尘少,有效控制了初期支护的围岩变形。

The high-performance shotcrete is used in the construction of underground powerhouse and tunnels of Bailianhe Pumped-storage Power Station. The practice shows that the high-performance shotcrete can meet the requirements of New Austrian Tunneling Method. The shotcrete has good pumpability, higher early strength, less post strength loss, smaller rebound rate and good bonding with surrounding rock, and the construction of shotcrete can form thicker concrete at one process and has less dust. The shotcrete can effectively control surrounding rock deformation at initial supporting stage.