Prediction of Landslide Run-Out Distance and Velocity at Sidamukti Landslide Using Slope Stability and Center of Mass Approaches Afshih Lisaan Auliya (*a), Selly Feranie (a), Adrin Tohari (b)
a)Laboratoy of Earth and Space Science, Department of Physics Education, Indonesia University of Education (UPI), Jl. Dr. Setiabudhi No. 229, Bandung, Indonesia
*afshihlisaanauliya[at]upi.edu
b)Research Center for Geotechnology, National Research and Innovation Agency (BRIN), Bandung, Indonesia
Abstract
A landslide occurrence may involve a rapid movement and poses a substantial risk to a densely populated area. Thus, an effort to reduce the substantial landslide risk requires knowledge of landslide velocity and run-out distance. The study presented in this paper attempts to predict the velocity and run-out distance of a potential landslide movement in the Sidamukti area, Bandung Regency, using two different slope stability analysis software and the center of mass approach. Results of slope stability analysis show that the estimated potential landslide masses obtained from PyBimstab software show a good agreement with those obtained by Geostudio software. Accordingly, the results of the center of mass analysis of both estimated landslide masses resulted in a run-out distance of approximately 60 m and a velocity of more than 5 m/s. Thus, the landslide in the study area can be classified as an extremely rapid landslide.
Keywords: Center of mass, landslide, run-out distance, slope stability, velocity
