通过建立整体计算域的三维非线性有限元网格 ,用有限元方法分析研究了宝珠寺水电站拦河大坝左岸河床坝基下的楔形体对坝基深层抗滑稳定性的影响程度 .为验证大坝整体有限元网格的计算精度 ,在大坝整体有限元网格的基础上 ,局部进行了有限元网格的细分 ,粗细网格的计算结果得到较好的吻合 ,证明整体网格精度是足够的 By establishing a three-dimensional non-linear finite element grid of the whole calculation domain, the influence degree of the wedges under the dam foundation on the left bank of Baozhusi Hydropower Station on the deep anti-sliding stability of the dam foundation is analyzed by finite element method The calculation accuracy of the whole finite element mesh is based on the finite element mesh of the dam, and the finite element mesh is partially subdivided. The calculation results of the coarse and fine mesh are well matched to prove that the overall mesh precision is enough