Prediction of Urban Waterlogging Based on SWMM Model:——Taking Fangcun Drainage Area,Guangzhou as an Example
Fangcunwei is an important drainage area in Liwan District of Guangzhou.It is of great significance to study its waterlogging model in Guangzhou.In this paper,taking 8 waterlogging prone points in the drainage area of Fangcun as examples,the waterlogging model was constructed by combining SWMM and GIS technology.At least 3 sets of measured rainfall and water accumulation data were used to rate and verify the parameters of each waterlogging point.Based on the measured rainfall data,the urban waterlogging water depth is simulated.The results show that,under the condition of actual rainfall,the model can accurately predict whether waterlogging will occur and the grade of waterlogging at the waterlogging points in the drainage section of Fangcun.And the peak time of waterlogging at each waterlogging point is also shown.The accurate simulation effect provides an important basis for urban waterlogging in Guangzhou.
SWMM modelGIS technologywaterlogging modelwater depth predictionFangcun Drainage Area
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