第25回応用力学シンポジウム

Presentation information

Regular Session

General Session (1.Mathematical analysis for mechanics problem: forward- and inverse-modeling in civil engineering)

第1部門②

Sat. May 28, 2022 10:40 AM - 12:10 PM Meeting room A (Online)

座長:佐藤 太裕(北海道大学)

10:55 AM - 11:10 AM

[2A07-12-02] Accuracy Evaluation of Landslide Simulation using Depth Integrated Particle Method

*Fazlul Habib Chowdhury1, Takashi Matsushima1 (1. University of Tsukuba)

Keywords:Depth Integrated Particle Method, Slope Failure, Shallow Landslide

DIPM (depth-integrated particle method) is an effective numerical method suitable for sediment-related disaster simulation of a very wide area with detailed topographic information. In DIPM, the behavior of the flowing mass is governed by Manning's coefficient n related to bottom shear stress and the critical deposition angle icr related to the yield stress. Flow simulations were conducted for slope failures during Hokkaido Eastern Iburi Earthquake (2018). Geological conditions, vegetation, and water content influenced the detection of the material parameters through flow simulation. The average value for n and icr are 0.1 and 6°, respectively, with an average accuracy of 66%.