GIS-based two-dimensional numerical simulation of debris flow

WANG Chun-xiang; BAI Shi-wei; ESAKI Tetsuro; MITANI Yasuhiro

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GIS-based two-dimensional numerical simulation of debris flow

更新时间：2026-06-25

- GIS-based two-dimensional numerical simulation of debris flow
- Vol. 28, Issue 7, (2007)
- 作者机构：
  
  1. 日本九州大学环境系统科学研究中心,福冈,812-8581
  2. 中国科学院武汉岩土力学研究所,武汉,430071
- 作者简介：
- 基金信息：
- DOI：
  CLC： O242
- Online First：13 September 2013，
  
  Published：2007
- 稿件说明：
移动端阅览
WANG Chun-xiang, BAI Shi-wei, ESAKI Tetsuro, et al. GIS-based two-dimensional numerical simulation of debris flow[J]. 2007, 28(7).
DOI：

WANG Chun-xiang, BAI Shi-wei, ESAKI Tetsuro, et al. GIS-based two-dimensional numerical simulation of debris flow[J]. 2007, 28(7). DOI：

摘要

为了模拟泥石流的运动规律，预测降雨诱发的泥石流到达距离和泛滥范围，减少和避免泥石流引起的灾害，给出了一个模拟泥石流运动的二维数值模型。由于GIS中的栅格网络数据可以直接作为有限差分的网格，二维数值模型可用有限差分来求解。模型应用于2003年7月20日发生在日本九州南部熊本县水俣市宝川区集村的泥石流。模拟再现了这个真实泥石流的传播和泛滥的过程，并与实际检测结果很吻合，验证了这个深度积分的二维数值模型的有效性和实用性。模型可用于预测泥石流的流动距离和泛滥范围，以及泛滥范围内的危险房屋和路段，也可以用于泥石流灾害的风险性分析。

Abstract

To predict the run out distance and extent of the hazard area of rainfall-induced debris flows

we proposed a depth-averaged two-dimensional numerical model

in which the debris and water mixture is assumed to be a uniform continuous

incompressible

unsteady Newtonian turbulence fluid. As raster grid networks of digital elevation model in 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 data and output are processed in GIS. The model is applied to simulate the rainfall-induced real debris flow of July 20

2003

in Minamata City of southern Kyushu

Japan. The simulation reproduces the propagation of the real debris flow; and the results are in good agreement with the field investigation. The two-dimensional numerical simulation using GIS can be used to estimate the potentially inundated areas

the potentially dangerous homes and roads for hazard and risk analysis.

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