结合实测资料和有限元方法分析建于深覆盖层地基上面板堆石坝的应力、变形特性。数值计算中采用邓肯-张E-B模型模拟覆盖层地基和坝体的应力、变形行为，同时采用无厚度接触面模拟面板和坝体以及防渗墙和地基之间的相互作用。整理和分析工程实测资料并与数值计算结果进行对比分析，重点分析坝体和防渗结构的力学行为以及面板堆石坝和地基之间的相互作用。比较分析表明，大坝最大沉降和压应力分别发生在坝体底部和覆盖层中，覆盖层对坝体及防渗结构的应力、变形特性具有显著影响，应力、变形实测值与数值计算结果吻合较好，说明数值计算结果的有效性。在此基础上，分析了覆盖层上面板堆石坝分期填筑和筑坝速度对坝体和防渗结构应力变形的影响。结果表明，分期填筑引起坝体较大不均匀沉降和复杂的应力状态，但一定程度上可以改善防渗墙的应力变形特性；较快的坝体填筑速度容易引起坝体较大的前期应力和后期沉降，不利坝体的施工和运行。

Stress-deformation behaviour of a concrete-faced rockfill dam (CFRD) built on sand and gravel foundation is studied based on the in situ monitoring results and finite element analysis (FEA). The mechanical behaviour of the dam body and its impervious structures is investigated and the interaction between the CFRD and the overburden foundation is analyzed. Three-dimensional FEA is performed, with introducing the Duncan-Chang E-B model for gravel and rockfill and the Lagrange method for the interface, to evaluate the stress-deformation behaviour of the CFRD at the construction and filling stages of the reservoir. Comparative analysis shows that the maximum settlement occurred at the bottom height of the dam instead of the middle height and the maximum compressive stress distributed in the overburden. The overburden foundation has a significant effect on the stress-deformation behaviour of the dam body and impervious structures. The stress and deformation values computed using the FEA model are found to be consistent with the measured data for the construction stage. Numerical simulation is used to analyze the different factors influencing the behaviour of the dam body and cut-off wall. The results show that the staged-filling of the dam body will cause uneven deformation and stress concentration in the dam body, but can improve the stress and deformation behaviour of the cut-off wall to some extent; and the rapid dam construction rate results in a larger prestage stress and post-construction settlement which is not conducive to the construction and operation of the dam.