Abstract
Landslides can range in size from small movements of loose debris to massive collapses of entire summits. For short to medium-length slopes, some measures will be effective for assessing and mitigating landslide hazards. Extremely large slope failures, however, are very difficult to mitigate, and the importance of run-out analysis emerges. For the purpose of developing numerical tools for run-out analysis, we tried to analyze the behavior of a dry sand flow with MPM (Material Point Method), which can treat the large deformation the conventional finite element method cannot treat. We also analyzed the behavior of an elastic block on frictional plane or inclined plane to check the accuracy of methods at energy history etc.
