The Study of Landslide Probability By Numerical Model.

The purpose of this research was to investigate landslides by the effects of infiltration using the software of FEMWATER and STABLE PRO to simulate the real condition of the rain period at Ping Ding Village, Yunlin, Taiwan. Typhoons often bring a lot of rain during the summer in Taiwan and a very high cumulative amount of rainfall in a short period of time. According to past historical data, landslides occurred due to instability of the soil caused by the rainstorm period or earthquakes in Ping Ding Village. Therefore, this research applies a three-dimensional numerical groundwater model, which is the FEMWATER software, to simulate changes of the soil regarding the unsaturated zone in the region, and then a sensitivity analysis of the soil was performed by the STABLE PRO software. The aim was to confirm the slope instability of the soil regarding the unsaturated zone under the influence of infiltration.