基于SWMM模拟上海市区排水及地面淹水过程

利用基于GIS的二维水动力暴雨淹没模型，在考虑排水管网抽排的基础上，模拟了武汉城区短历时6个重现期暴雨内涝过程，基于MapGIS绘制了重现期暴雨内涝图，分析了内涝特征，并用近年实际暴雨内涝点对模拟内涝区进行了验证，结果表明模拟效果较好。在此基础上，对业务中常用短时预报暴雨量进行了内涝模拟。结果可用于武汉城区暴雨内涝高风险区(点)预警、内涝灾害评估及防治。技术方法可推广到其他城市应用。

Rainstorm waterlogging research on numerical simulation for short-duration in the urban area of Wuhan

Based on 2D hydrodynamic rainstorm drowned GIS model, the 6 historical return periods short-duration rainstorm waterlogging processes in the urban area of Wuhan were simulated with consideration of being gotten rid of pump drainage by drainage net system. The 6 rainstorm waterlogging charts were drawn using MapGIS, and the characteristics of rainstorm waterlogging were analyzed. The result of simulation was verified by practical waterlogging data collected in recent years in Wuhan. The result of verification shows that the simulation was reliable. Moreover, the waterlogging processes for some typical short-time rainstorm intensity used in operations were simulated. The results can be used in urban rainstorm waterlogging forecasting and warning, and waterlogging risk assessment and preventing against waterlogging. The technology can also be applied to other cities.