Simulation of Rainstorm Waterlogging Based on SWMM and Visualization Module Research

With the development of economy, population growth and the constantly expanding number and scale of the city, the problem of flood prevention safety is more prominent. This paper combined with the actual hydraulic and hydrological conditions of pipe network in research area, and then established the urban rainstorm waterlogging model based on the American rainstorm management model of SWMM. On this basis, three levels of system structures of GIS are developed, a general dynamic link library of SWMM model is used to develop the waterlogging calculation analyses and visualization module. The model parameters of the module are more interactive; furthermore, the system includes query functions like query by variables, objects or time series simultaneous when in the process of simulation water accumulated calculation. The research results can provide effective support for the risk management of urban flood disaster.