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对桐柏抽水蓄能电站地下洞室群开挖过程进行了三维非线性有限元计算和分析，得到了各工况下洞室开挖后围岩的变形和应力状态以及锚杆的应力数值，同时分析了塑性区的发展过程和分布范围。从而全面地了解洞室在施工过程中的变形和受力特征．掌握了洞室开挖过程中的稳定性特征。计算结果不但为桐柏抽水蓄能电站地下洞室的设计、监测和施工提供有价值的研究成果，具有重要的参考价值，而且所采用的方法和计算策略，对于同类工作也具有较大的参考作用。
The excavation process of underground caverns at Tongbai Pumped Storage Power Station was carried out by three-dimensional nonlinear finite element method. The deformation and stress state of surrounding rock after excavation of cavern and the stress values of anchor bolts were obtained. At the same time, the development and distribution of plastic zone were analyzed. Thus a comprehensive understanding of the cavern in the construction process of deformation and stress characteristics. Mastered the stability of the excavation process characteristics. The results not only provide valuable research results for the design, monitoring and construction of underground caverns at Tongbai Pumped Storage Power Station, but also have important reference value, and the methods and calculation strategies adopted also have great reference for similar work effect.