Simulation analysis on seismic stability of a loose deposit

A loose deposit beside a large-scale hydropower station appeared local deformation and failure in Wenchuan earthquake,but did not produce overall destructive phenomenon.In this paper,FLAC3D software was used to make numerical simulation to the seismic response in this loose deposit,and to analyze its stability and failure characteristics under the strong earthquake.The results show that the loose deposit stayed stable under seismic action and only appeared local deformation and failure without the possibility of whole stable-lose.In addition the simulation results are consistent with the actual stable state of the loose deposit after earthquake.