本文对三峡工程二期围堰的应力和变形作了有限元分析。土体的应力应变关系采用双曲线模型。通过分析,从总体上论证了初步设订方案的合理性,同时否定了通常认为防渗墙混凝土弹模愈低愈好的看法,对防渗墙的设计提出了一些建议。 This paper presents the finite element analysis of the stress and deformation of the second stage cofferdam of the Three Gorges Project. The stress-strain relationship of soil uses hyperbolic model. Through the analysis, the rationality of the preliminary design scheme is demonstrated in the whole, meanwhile the view that the lower the concrete slab wall of the cut-off wall is generally considered to be, the better is put forward. Some suggestions are put forward for the design of the cut-off wall.