于琛,胡德勇,张亚妮,曹诗颂,王莎莎

• 1:首都师范大学资源环境与旅游学院
• 2:资源环境与地理信息系统北京市重点实验室
• 3:北京建筑大学测绘与城市空间信息学院

摘要(Abstract)：

为了实现洪水演进过程快速模拟及关键信息提取,该文提出基于DEM空间分块的洪水动态演进算法。该算法设计融合了种子蔓延和水量等体积的思想,结合数字高程模型,以空间分块作为迭代单元,能较好呈现洪水演进的动态变化过程。算法主要针对决堤式洪水情景,支持静态和动态洪水参量的输入。通过在理想地形和情景地形的适用性测试,证明了该算法不仅具有良好的模拟精度,而且能准确表达不同地形单元的淹没特征。利用该文算法在大山咀子水文站区域实现洪水演进模拟,得到淹没面积和水深的动态变化结果。通过与基于种子蔓延、基于无源淹没的算法对比,该文算法的计算效率最优,重叠度检验结果也证明模拟精度良好。

关键词(KeyWords)： 洪水演进;淹没分析;空间分块;数字高程模型;淹没水深

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划课题(2017YFB0504102);; 国家自然科学基金项目(41671339)

作者(Author): 于琛,胡德勇,张亚妮,曹诗颂,王莎莎

DOI: 10.16251/j.cnki.1009-2307.2020.10.026

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