采用三维非线性有限元反演回归分析计算方法,提出侧压力系数函数拟合方法,考虑了地质构造,地形地貌以及实测应力对初始应力场的影响。对蒲石河抽水蓄能电站地下厂房区域初始地应力场进行反演回归分析研究,实测点处附近应力分布的局部特性证明反演计算方法是合理的。 The method of regression analysis and calculation based on three-dimensional non-linear finite element method is proposed. The fitting method of lateral pressure coefficient function is proposed, and the influence of geological structure, topography and measured stress on initial stress field is considered. The initial geostress field of the underground powerhouse area of ​​Pushihe Pumped Storage Power Station is analyzed by inverse regression analysis. The local characteristics of the stress distribution near the measured point prove that the inversion calculation method is reasonable.