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宜兴抽水蓄能电站地下厂房开挖工程量大,技术复杂,是控制总工期的关键。从开挖程序、开挖方法、支护方式和支护时机、支护方法、爆破参数的选择、交叉口段施工及不良地质段处理等方面,对不良地质条件下地下厂房开挖进行了探索和实践。结果表明,所采取的施工方案科学、有效,开挖质量优良,施工进度满足要求,为今后不良地质段的开挖积累了经验。
Yixing Pumped Storage Power Station underground powerhouse excavation project is large, complex technology, is the key to control the total duration. Excavation of underground powerhouse under unfavorable geological conditions is explored from the aspects of excavation procedure, excavation method, support method and support time, support method, selection of blasting parameters, construction of intersections and treatment of poor geological sections And practice. The results show that the construction scheme adopted is scientific and effective, the quality of excavation is good, and the construction progress meets the requirements, which has accumulated experience for the excavation of poor geological sections in the future.