A basic study on the earthquake risk assessment methods of landslide and valley-filling embankment slope

This study proposes a method to assess the risk of landslide and valley-filling embankment slopes at the time of earthquake. The method is applicable to landslide and sliding and falling of embankment triggered by earthquake. To assess the risk triggered by earthquake, the study proposes a method to calculate slope stability using shear resistance coefficient (φp). Also. the study proposes a calculation method, which user peak ground acceleration (PGA) featuring space domain interpolation, to calculate the seismic coefficient (ke) used in the calculation of slope stability. Both values are computed through the calculation of slope stability at the time of earthquake. The risk at the time of earthquake shall be assessed from the acceleration limit, where the collapse occurs, and the safety rete. Through the verification and analysis of earthquake-triggered landslide and sliding and falling of embankment, the study obtained useful information beneficial for the establishment of the method to assess risk at the time of earthquake. The authors have established a system to assess risk of landslide and valley-filling embankment slopes during earthquake.