Two-dimensional numerical simulation of rainfall-induced debris flows using GIS

C. X. Wang, T. Esaki, Y. Mitani, J. Andou

研究成果: Chapter in Book/Report/Conference proceedingConference contribution

抄録

To predict the runout distance and inundated area of rainfall-induced debris flows, we develop a depth-averaged two-dimensional numerical model, in which the debris and water mixture is assumed to be a continuous, incompressible, unsteady fluid. The model is based on the continuity equations and Navier-Stokes equations. As raster grid networks of digital elevation model in Geographic Information Systems (GIS) can be used as the finite difference mesh, the continuity and momentum equations are solved numerically using the finite difference method. All the input and output data are processed in GIS. The model is applied to simulate the rainfall-induced debris flow of July 20, 2003, in Minamata City, southern Kyushu, Japan. The simulation reproduces the propagation and deposition of the debris flow and the results are in good agreement with field investigations. The two-dimensional numerical simulation of rainfall-induced debris flows using GIS can be used to estimate the flow range, and to define potentially hazardous areas for homes and roads.

本文言語英語
ホスト出版物のタイトル4th International Conference on Debris-Flow Hazards Mitigation
ホスト出版物のサブタイトルMechanics, Prediction, and Assessment
ページ209-219
ページ数11
出版ステータス出版済み - 12 1 2007
イベント4th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment - Chengdu, 中国
継続期間: 9 10 20079 13 2007

出版物シリーズ

名前International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment, Proceedings

その他

その他4th International Conference on Debris-Flow Hazards Mitigation: Mechanics, Prediction, and Assessment
国/地域中国
CityChengdu
Period9/10/079/13/07

All Science Journal Classification (ASJC) codes

  • 水の科学と技術
  • 地盤工学および土木地質学
  • 地表過程

フィンガープリント

「Two-dimensional numerical simulation of rainfall-induced debris flows using GIS」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル