应用DEM 数字高程模型插值技术, 快速获取计算区域的地形数据, 其后基于EFDC 模型的建模及水动力计 算分析模块, 建立了蓄滞洪区洪水演进模型, 并借助于ARCGIS 的展示功能, 实现了结果的可视化。以漳卫河流域 的大名蓄滞洪区作为实例, 仿真模拟了1962 年7 月的一场洪水, 在该蓄滞洪区的演进过程中, 设计了三种不同的泄洪 方案进行对比分析。结果表明, 应用EFDC 可以较好地模拟洪水演进的规律, 为分蓄洪区防洪决策与抢险提供参考。

Dig ital Elevat ion Model( DEM) inter po lat ion techniques can help achieve the ar ea ter rain data rapidly . The hydro dy2 namic mo deling and computat ional analy sis module in EFDC model w ere used to establish the flood routing model, and model results can be visualized w ith the help of ARCGIS display functions. In this paper, the flood routing in the Daming flood detention basin of the Zhangwei River was simulated based on the flood on July 1962, and the model results based on three different designed flood2releasing schemes w ere compared and analyzed. The results showed that the EFDC model performs well to simulate the evo lution law of the flood, w hich can prov ide v aluable references for the flood contr ol decision2making in the flood detention basin.

国家自然科学基金( 51021066) ; 水利部公益性行业科研专项经费项目( 201001024; 201101026; 201101024)