A NEW METHOD FOR THE RUN-OUT ANALYSIS AND MOTION PREDICTION OF RAPID AND LONG-TRAVELING LANDSLIDES WITH MPM

Abstract

Earthquake and rain induced rapid and long-traveling landslides can cause heavy damage and are very difficult to escape from. Prevention by e.g. installing drainage systems, anchoring the slopes is difficult. Thus it is important to evaluate the landslide risk with help of run-out analyses.
In this study, a new and practical depth averaged method for landslide run-out analysis across three-dimensional terrain by discretizing St. Venant’s equation with MPM was developed and results of run-out analyses of elastic material, dry sand and recent rapid and long-traveling landslides are presented.