Analysis of Landslide Susceptibility Using Monte Carlo Simulation and GIS

Since the landslide is one of the repeated geological hazards and causes a terrible loss of life and properties in Korea, many different researches have been carried out to evaluate the hazard and the susceptibility of landslide. The physical landslide model has been suggested to evaluate the factor of safety in previous studies but the deterministic approach has been utilized. However, applying the deterministic model in regional study area can be difficult or impossible because of the difficulties in obtaining and processing of large spatial data sets. With limited site investigation data, uncertainties were inevitably involved with. Therefore, the probabilistic analysis method such as Monte Carlo simulation has been utilized in this study. The GIS based infinite slope stability model has been used to evaluate the probability of failure. The proposed approach has been applied to practical example. The study area in Pyeongchang-gun, Gangwon-do has been selected since the area has been experienced tremendous amount of landslide occurrence.

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