地表水与地下水耦合模型开发与验证!

鉴于研究地表水与地下水的相互作用及其分布规律可为"海绵城市"建设提供依据,对地表水与地下水的耦合模型进行了开发,在浅水模型的基础上增加地下水模块,并在连续性方程中添加源汇项,实现地表水与地下水垂向上的耦合,同时选用Green-Ampt模型计算地表水的下渗量。通过算例分析,将模型计算结果与数值试验及预期值进行对比,验证了模型的可行性。

Development and Verification of Coupling Model of Surface Water and Groundwater

In view of the surface water and groundwater interaction and their distribution law that can provide the basis for the "sponge city" construction, the coupling model of surface water and groundwater was developed through adding groundwater modules to the shallow water model. The source and sink terms were introduced to the equation of continuity to achieve vertical coupling between surface water and groundwater, and the Green-Ampt model was used to calculate the infiltration of surface water. The feasibility of the model was verified by comparing the results of the model tests with the numerical experiment and the expected values.