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西龙池抽水蓄能电站地下洞室群围岩呈缓倾角互层状结构,层理发育,岩性复杂,洞室开挖过程中,各种地质因素交互作用,洞室间相互影响。对复杂地质环境下的主厂房围岩进行了各种因素作用下的综合稳定分析,并依据多种测试手段,对开挖后围岩的稳定性和变形进行实时监测,掌握了洞室层状围岩变形破坏特征。研究了围岩的动态力学特征和变形规律,得出一些有益的认识和结论,对施工开挖方案的优化具有重要参考价值。
The surrounding rock of the underground caverns in Xilongchi Pumped Storage Power Station shows a gentle dip and interlayered structure with bedding development, complicated lithology, various geologic factors and interaction between caverns during excavation of the cavern. The comprehensive stability analysis of the surrounding rock of the main building under complicated geological environment is carried out under various factors. According to various testing methods, the stability and deformation of the surrounding rock after excavation are monitored in real time. Deformation and failure characteristics of surrounding rock. The dynamic mechanical characteristics and deformation rules of surrounding rock are studied. Some useful understandings and conclusions are drawn, which have important reference value for the optimization of construction excavation scheme.