关键词: 体型设计, 支护参数, 开挖顺序, 开挖成型, 溪洛渡水电站

Abstract:

In large underground powerhouse cavern excavation, the excavation and stability control technology for the key parts of underground powerhouse is the key to the smooth construction. Taking Xiluodu Hydropower Station as the case, the excavation shape design, excavation sequence and stability control technique for key parts of large underground powerhouse were introduced. The engineering practices show that the smooth excavation of underground powerhouse relies on the measures taken in various stages from design to construction, which makes the deformation of surrounding rock small. The design and construction technique can provide reference for the excavation of similar projects.
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Key words: shape design, rock-support parameters, excavation sequence, Xiluodu Hydropower Station