| 基于DEM的单沟泥石流危险性定量评价 |
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| 引用本文： | 杨玲,周海波. 基于DEM的单沟泥石流危险性定量评价[J]. 四川地质学报, 2014, 0(2): 262-266,271 |
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| 作者姓名： | 杨玲 周海波 |
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| 作者单位： | [1]四川省核工业地质调查院,成都610061 [2]四川省交通运输厅公路规划勘察设计研究院,成都610041 |
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| 摘 要： | DEM(Digial Elevaion Model)是地貌景观高程信息的数字表达,能够直观的反应地形地貌条件。泥石流形成和运动受其流域地貌条件的制约,流域系统信息是地貌发育状态的定量描述;故其值能够作为描述泥石流危险性的一种定量化指标。该研究在对甘肃南部地区白龙江流域的252条泥石流沟的基本参数统计分析基础上,选取其中45条泥石流单沟;通过DEM数据拟合其沟谷高程—面积抛物线方程,计算单沟泥石流流域面积—高程函数积分S;在缺乏流域其他环境因子参数的情况下,定量化描述泥石流危险性。
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| 关 键 词： | 泥石流 流域系统信息熵 定量评价 |
Quantitative Assessment of Danger of a Mud-debris Flow Based on DEM |
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| YANG Ling,ZHOU Hai-bo. Quantitative Assessment of Danger of a Mud-debris Flow Based on DEM[J]. Acta Geologica Sichuan, 2014, 0(2): 262-266,271 |
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| Authors: | YANG Ling ZHOU Hai-bo |
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| Affiliation: | 1.Sichuan Institute of Geological Survey for Nuclear Industry, Chengdu 610061; 2.Research Institute of Highway Planning, Exploration and Designing, Sichuan Department of Communication and Transportation, Chengdu 610041) |
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| Abstract: | Formation and movement of a debris flow are in close relationship with geological landscape and elevation. DEM （digital elevation model） is digital express of geological landscape and elevation and thus may be used as quantitative index describing danger of a debris flow. This paper uses DEM data for making quantitative assessment of danger of 45 among 252 debris flows in the Bailong River basin, south Gansu. |
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| Keywords: | DEM DEM debris flow information entropy in drainage system danger of debris flow |
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