Effect of Groundwater Table on Slope Stability and Design of Retaining Wall

Groundwater table on slope stability are important contributing factors to slope failures. Parametric studies were carried out to study the effect of groundwater table position in affecting slope stability. Six different groundwater table corresponding to the wettest, typical, and driest were used in the numerical analyses using Geo Studio. In order to monitor slope stability, GeoStudio software is frequently applied to landslide stability analysis. In this paper, Jalan Poros Berau-Tanjung Selor slope stability prediction in East Borneo was subjected by GeoStudio software, while limit equilibrium method was adopted to calculate the safety factor in the slip surface based on five different groundwater table. Overall, the analyses shows that the five different groundwater table give the different safety factor. From this matter, retaining wall has planned with two layer, based on the critical condition which show by minimum safety factor.