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采用非线性有限元模型，对黄河小浪底斜心墙堆石坝的最终设计断面在施工和蓄水过程中的应力和变形状态进行了分析。主混凝土防渗墙采用梁单元模拟，并在砂砾石与混凝土防渗墙以及粘土与混凝土防渗墙间设置接触面单元。上游旋喷混凝土防渗墙采用普通实体单元进行模拟。结果表明，上游旋喷混凝土防渗墙中的应力不超过１１ＭＰａ，不会有强度问题；而对于主混凝土防渗墙，由于在施工期和蓄水淤积期均承受较大的压应力，因此该防渗墙的设计和施工是整个坝体的关键问题。在整个坝体的施工和运行过程中，坝体中不会产生过高的超静孔隙水压。坝体的整体设计合理可靠。
The nonlinear finite element model was used to analyze the stress and deformation of the final design section of the Xiaolangdi diagonal core rockfill dam during construction and storage. The main concrete impervious wall adopts the beam element simulation, and sets up the contact surface unit between the gravel and the concrete cutoff wall and between the clay and the concrete cutoff wall. The upstream jet-sprayed concrete cutoff wall is simulated by ordinary solid elements. The results show that the stress of the upstream jet grouting concrete cutoff wall does not exceed 11MPa and there is no strength problem. For the main concrete cutoff wall, due to the large compressive stress during the construction and storage stages, Design and construction of cut-off wall is the key issue of the whole dam. During the entire construction and operation of the dam, the dam will not produce excessive excess pore pressure. The overall design of the dam is reasonable and reliable.