本文根据天生桥面板堆石坝施工期及初次高水位蓄水后的实测变形资料 ,采用清华非线性解耦K G模型 ,进行大坝整体的三维有限元反馈分析 .分析结果与实测结果基本相符 .反馈分析结果给出了坝料实际的力学性质 (模型参数 ) ,揭示了分区分期填筑的高面板堆石坝的复杂变形性状 ;文中提出对高坝下游填筑料 (即IIIC区料 )的坚实性应有较高的要求 .特别要注意对坝体的施工临时剖面进行优化设计 ,以控制堆石体的差异变形、防止面板下垫层料出现裂缝及脱空等问题 . Based on the measured deformation data of Tianshengqiao concrete face rockfill dam during the construction period and the first high water level impoundment, the nonlinear damped KG model of Tsinghua University was used to carry out the three-dimensional finite element feedback analysis of the dam.The results are basically consistent with the measured results. The results of the analysis give the actual mechanical properties of the dam (model parameters), revealing the complex deformation characteristics of the high concrete face rockfill dam filled by stages. In the paper, we propose a solid foundation for the filling material of the downstream dam In particular, attention should be paid to the optimization design of the temporary section of the dam body to control the deformation and deformation of the rockfill body and prevent the occurrence of cracks and voids in the underlaying material of the panel.