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前期的地下主厂房围岩稳定及支护方案的模拟研究，是电站地下厂房设计方案论证的重要一环。本文利用有限单元法对某抽水蓄能电站地下厂房进行了非线性分析研究．给出了多步开挖，锚杆、锚喷及衬砌等不同支护方式情况下的洞室围岩、支护应力及位移分布特征．通过时不同支护方式的分析比较．为工程设计方案的论证提供了理论依据和参考信息．
The preliminary research on the stability of surrounding rock of underground main building and the simulation research of the supporting scheme are the important part of the demonstration of underground power plant design scheme. In this paper, finite element method is used to conduct a nonlinear analysis of underground powerhouse of a pumped storage power station. The characteristics of surrounding rock, supporting stress and displacement of caving are given under different supporting methods such as multi-step excavation, bolt, anchor spray and lining. Through the analysis of different support methods. It provides a theoretical basis and reference information for the demonstration of engineering design scheme.