Three-Dimensional Seepage Analysis of Earth Dam Considering Valley Shape Effects

Since distribution of pore water pressure in body and foundation of earth dam is needed for other analyses, the first step in design of earth dams is seepage analysis. In this paper, a three-dimensional seepage analysis has been performed on a particular dam, with grout curtain cut-off, and the results have been compared to those of twodimensional ones. Effectiveness of grout curtain is greatly influenced by valley shape in three-dimensional analyses. It has less effect on hydraulic gradients and location of phreatic surface in three-dimensional models than that of two-dimensional ones

Keywords:

Three dimensional , seepage analysis , earth dam