Chen Wenjie, Huang Guoru, Zhang Han
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China.
School of Civil Engineering and Transportation, South China University of Technology and State Key Laboratory of Subtropical Building Science, South China University of Technology, Guangzhou 510640, China E-mail:
Water Sci Technol. 2017 Dec;76(11-12):3392-3403. doi: 10.2166/wst.2017.504.
With rapid urbanization, inundation-induced property losses have become more and more severe. Urban inundation modeling is an effective way to reduce these losses. This paper introduces a simplified urban stormwater inundation simulation model based on the United States Environmental Protection Agency Storm Water Management Model (SWMM) and a geographic information system (GIS)-based diffusive overland-flow model. SWMM is applied for computation of flows in storm sewer systems and flooding flows at junctions, while the GIS-based diffusive overland-flow model simulates surface runoff and inundation. One observed rainfall scenario on Haidian Island, Hainan Province, China was chosen to calibrate the model and the other two were used for validation. Comparisons of the model results with field-surveyed data and InfoWorks ICM (Integrated Catchment Modeling) modeled results indicated the inundation model in this paper can provide inundation extents and reasonable inundation depths even in a large study area.
随着城市化进程的加快，洪水引发的财产损失日益严重。城市洪水模拟是减少这些损失的有效途径。本文介绍了一种基于美国环境保护局雨水管理模型（SWMM）的简化城市雨水淹没模拟模型和一种基于地理信息系统（GIS）的扩散坡面流模型。SWMM用于计算雨水排水系统中的流量和节点处的洪水流量，而基于GIS的扩散坡面流模型则模拟地表径流和淹没情况。选取了中国海南省海甸岛的一个实测降雨场景对模型进行校准，另外两个场景用于验证。将模型结果与实地调查数据和InfoWorks ICM（综合集水区建模）模型结果进行比较，结果表明本文中的淹没模型即使在较大的研究区域也能提供淹没范围和合理的淹没深度。
