Analysis on Dynamic Stability of Soil Slope under Seimic Action

Evaluation indicators for slope stability under seismic action are mainly of permanent deformation and stability safety factor.Permanent deformation is obtained directly through numerical calculation;the calculation of stability safety factor is carried out based on earthquake response analysis.Through numerical calcu-lation,the distribution of initial stress on potential siding surface and instant stress under seismic action can be determined;then instant slope dynamic safety factor can be calculated according to the time interval of initial static stress and dynamic stress of potential sliding surface unit to get the time interval of slope dynamic safety factor.This paper carries out analysis on dynamic stability of a soil slope for example in the end to get the deformation rule of slope and the changing rule of safety factor under seismic action.