GIS-based Numerical Modelling of Debris Flow Motion across Three-dimensional Terrain
文献类型：期刊论文
| 作者 | Wu Jian ; Chen Guang-qi ; Zheng Lu ; Zhang Ying-bin |
| 刊名 | Journal of Mountain Science
 |
| 出版日期 | 2013-08 |
| 卷号 | 10期号:4页码:522-531 |
| 关键词 | Debris flow Numerical simulation GIS Movement Erosion Deposition Equilibrium concentration |
| 通讯作者 | ZHANG Ying-bin |
| 英文摘要 | The objective of this study is to incorporate a numerical model with GIS to simulate the movement, erosion and deposition of debris flow across the three dimensional complex terrain. In light of the importance of erosion and deposition processes during debris flow movement, no entrainment assumption is unreasonable. The numerical model considering these processes is used for simulating debris flow. Raster grid networks of a digital elevation model in GIS provide a uniform grid system to describe complex topography. As the raster grid can be used as the finite difference mesh, the numerical model is solved numerically using the Leap-frog finite difference method. Finally, the simulation results can be displayed by GIS easily and used to debris flow evaluation. To illustrate this approach, the proposed methodology is applied to the Yohutagawa debris flow that occurred on 20th October 2010, in Amami-Oshima area, Japan. The simulation results that reproduced the movement, erosion and deposition are in good agreement with the field investigation. The effectiveness of the dam in this real-case is also verified by this approach. Comparison with the results were simulated by other models, shows that the present coupled model is more rational and effective. |
| 公开日期 | 2013-07-15 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/5659]  |
| 专题 | 成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2013_Vol10 No.4 |
| 推荐引用方式 GB/T 7714 | Wu Jian,Chen Guang-qi,Zheng Lu,et al. GIS-based Numerical Modelling of Debris Flow Motion across Three-dimensional Terrain[J]. Journal of Mountain Science,2013,10(4):522-531. |
| APA | Wu Jian,Chen Guang-qi,Zheng Lu,&Zhang Ying-bin.(2013).GIS-based Numerical Modelling of Debris Flow Motion across Three-dimensional Terrain.Journal of Mountain Science,10(4),522-531. |
| MLA | Wu Jian,et al."GIS-based Numerical Modelling of Debris Flow Motion across Three-dimensional Terrain".Journal of Mountain Science 10.4(2013):522-531. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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