Frequent occurrence of urban rainstorm waterlogging has caused serious threats to the lives and property security of urban residents. Simulation of hazard risk of urban rainstorm waterlogging can be used to provide a basis for forcasting and warning of the urban rainstorm waterlogging risk. An investigation based on the urban rainstorm waterlogging in the Nanguan district of Changchun has been conducted. From a multiscene perspective, the paper puts forward a scenario simulation framework for urban rainstorm waterlogging risk. One and two dimensional non-constant flows are used for the governing equation. A numerical model of urban rainstorm disaster risk is constructed by means of irregular grid to realize simulation of the risk of flooding hazards in the studied area. The results can provide a reference for the urban waterlogging emergency management department.

rainstorm waterlogging  /  multiple scenarios  /  Nanguan District of Changchun City  /  visualization