Research On Analyzing Dam Seepage Based On ANSYS

On the foundation of the basic theory and the control formula of seepage problem, and of similarity of the seepage flow equations and heat equations, the conclusion that the ANSYS/ Thermal module was used to analyze and compute the dam seepage flow problem had been worked out.Afterwards,the finite-element method (FEM) and its solution process, and ANSYS/Thermal solution process in steady and unsteady seepage were introduced. Ekill and Ealive technology was used to solve the saturation line.Then the modes of GUI and APDL were applied to analyzing steady seepage in Heihe Jinpen Dam. Overmatching GUI, ADPL was applied to programming and analyzing qualitatively unsteady seepage in the process of supper water level falling.Using the optimization designing module in ANSYS, with trio more stable surveyed data of the Heihe Jinpen Dam from 2003 to 2004, the permeability coefficients were inversed. The result manifested that the variation of these trio coefficients of the upstream core wall was much small, then that of the downstream core wall was great. This conclusion agreed with the surveyed equipotential line. It was feasible to inverse the permeability coefficients using the ANSYS optimization design module in steady seepage.The aim of inversing permeability coefficients is to analyzing and evaluating the status of dam seepage. Finally, using inversed permeability coefficients and other parameters, the status and stability of dam seepage were analyzed and evaluated in the process of supper water level falling and rising.Using tentatively ANSYS/Thermal to analysis steady and unsteady seepage,the feasibility and the validity were testified. The important reference of research on analyzing dam seepage was provided in this article.