Numerical Study on the Impact of Revising the Rainstorm Intensity Formula on the Storm Flood Disaster Prediction in Huinan, Pudong District

Abstract

The numerical model by MIKE FLOOD software has been set up with coupled the rainfall runoff sub-model and underground network sub-model by MIKE URBAN software and the overland flow sub-model by MIKE 21 software to simulate the storm flood in Huinan, Pudong District. After the calibration and validation, the model is applied to study the impact of revising the rainstorm intensity formula on the local storm flood disaster prediction. And the conclusions are obtained: after the formula revised, the time to appear the maximum waterlogging area would be delayed, and the local storm flood disaster would worsen under the current drainage pipe networks, i.e., the overland flood range and its depth would slightly increase.