某抽水蓄能水电站地下厂房区域初始地应力反演分析

Back analysis of initial geostress field of an underground powerhouse region

抽水蓄能电站多采用地下厂房型式,初始地应力场是地下厂房工程设计和稳定性分析的重要依据。本文根据某抽水蓄能电站地下厂房区域地形地貌、工程地质条件以及实测地应力资料,分析了地下厂房区域地应力分布特征,并在此基础上建立了三维有限元模型,利用ABAQUS数值计算软件对地下厂房区域地应力场进行了反演分析,获得了地下厂房区与初始地应力场分布。

The powerhouse of pumped storage power station is designed underground, and the initial geostress field is an important basis for engineering design and stability analysis of underground powerhouse.According to the regional topography, engineering geological conditions and in-situ stress data of underground powerhouse in a pumped storage power station, this paper analyzes the regional stress distribution characteristics of the underground powerhouse, and establishes a three-dimensional finite element model, and the ABAQUS numerical calculation software is used to carry out the inversion analysis.