Characterization of Slope Movement Hazard at Sukatani-Ciganea Railway Section Using Slope Stability Analysis and Center of Mass Approaches Agrie Sri Yulia Fuji (a*), Selly Feranie (a), Adrin Tohari (b)
a) Laboratory of Earth and Space Science, Department of Physics Education, Indonesia University of Education (UPI), Bandung, Indonesia
*agriesriyf[at]upi.edu
b) Research Center for Geotechnology, National Research and Innovation Agency (BRIN), Bandung, Indonesia
Abstract
The occurrence of rapid slope movements is common in man-made slopes during heavy rainfall in West Java Province, Indonesia, and may pose a risk to transportation infrastructures such as railways and highways. Mitigation of such a landslide risk requires an understanding of the characterization of the hazard. The study presented in this paper aims to characterize a slope failure hazard at a railway section located between Sukatani and Ciganea stations in Purwakarta Regency. The objectives of this study were to determine the sliding surface within the man-made slope using Slope/W and PyBIMstab software and to predict the run-out distance and the velocity of the slope movement using the center of mass approach. Both slope stability software shows a good agreement in determining the slip surface location within the slope at critical safety factors. Based on the center of mass approach, the slope failure is characterized by a run-out distance of about 24.5 m and a movement of more than 6.3 m/s. Therefore, the combination of long run-out and extremely rapid movement indicators would suggest a high risk to the railway traffic.
Keywords: Centre of Mass- Landslide Hazard- Run-Out Distance- Landslide Velocity- Safety Factor- Slope Stability Analysis
