基于MIKE URBAN模型的武汉市典型城区内涝研究——I：模型构建与模拟验证

Research on Waterlogging in Typical Urban Area of Wuhan City Based on MIKE URBAN Model—I: Model Construction and Simulation Verification

摘要: 以武汉市楚河汉街地区为研究区，利用研究区的地形、土地利用和管网等资料，经过排水管网概化、集水区划分、产汇流参数设置的步骤，构建了基于MIKE URBAN模型的研究区城市雨洪模型，并采用综合径流系数法对模型进行参数验证。应用所构建的模型对五种设计暴雨情景(重现期P = 1a、2a、3a、5a、10a)下的管网排水过程进行模拟，并与SWMM模型的结果进行对比验证。经过这两方面的模拟验证，可以认为基于MIKE URBAN模型构建的研究区城市雨洪模型具有较好的可靠性，可以应用于武汉市楚河汉街地区的城市内涝研究。

Abstract: Chu River Han Street area in Wuhan City was taken as the study area. Using the topography, land use and pipeline network data of the study area, after the steps of generalization of pipeline network, division of catchments, and setting the parameters of runoff generation and concentration, anurban storm water model of the study area based on the MIKE URBAN model was constructed. The parameters of the MIKE URBAN model were verified by the comprehensive runoff coefficient method. The MIKE URBAN model was used to simulate the drainage process of the pipeline network under five design rainstorm scenarios (recurrence interval P = 1a, 2a, 3a, 5a, 10a), and the results of the MIKE URBAN model were compared with the results of the SWMM model for verification. After the two aspects of simulation verification, it can be considered that the urban storm water model in the study area based on the MIKE URBAN model has good reliability and can be applied to the study of urban waterlogging in the Chu River Han Street area in Wuhan City.