Seismic response analysis of earth dams with considering seepage

Using the Biot consolidation theory and a fluid-solid complete coupling method,the influence of seepage on seismic response of earth dams is analyzed.Meanwhile,the influence of seepage on the pore water pressure,stress and deformation of the earth dams is considered.Simulation of the earth dams under fluid-solid coupling and non-coupling has been conducted by FLAC.The results show that the horizontal and vertical deformation components of the dams increase when the influence of seepage is considered,the change of pore water pressure and effective stress are determined by the dam location under consideration of seepage influence,and the seepage has to be considered for the dams with long seismic loading duration,thin soil layers and large permeability coefficient.