Evaluation of Landslide Prevention Works for Seismic Loading

Prevention of landslide has always been important to have smooth flow of traffic along highways. Various methods of slope stability analysis are used to evaluate the degree of stability of landslide mass before and after the prevention work. Although each method is supposed to be appropriate for a specific situation, prevention plan designed with any method should give same level of stability to the prevented landslide. However, it is observed that factor of safety of a slope calculated with different slope stability analysis methods differs. This paper deals with a case study of a landslide prevention work along a highway sector and its reevaluation using different methods of analysis for possible ground motion due to earthquake.