Urban Flooding Risk Assessment and Countermeasure in Huangsha River Area in Shenzhen Based on MIKE FLOOD Coupling Model
To solve the urban waterlogging problem, taking the drainage division of Huangsha River District of Shenzhen city as an example, the urban waterlogging model was established based on the MIKE FLOOD platform and coupled with the urban rainwater pipe network , water system and topography and features, and the drainage scenarios of the study area under different recurrence periods such as once in 2 years, once in 10 years and once in 50 years were simulated and analyzed. The results show that the coupled model can directly reflect the depth and time of water accumulation, and with the increase of the recurrence period, the overflow point and the filled pipeline will increase. The MIKE FLOOD coupling model is established, and it is found that the high-risk area of Huangshahe area is 1.6 km2, mainly concentrated in Kangtang overpass and Longgang Avenue. The medium risk area covers 3.2 km2, mainly concentrated in Tongfuyu Industrial Zone and Xinlian North Road;The low-risk area is 2.8 km2, mainly concentrated in Kantang overpass and Pingzi Road, and the causes of water-prone points are analyzed, and suggestions are put forward.
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