摘要：According to meteorology, hydrology, water conservancy and other professional knowledge, using the spatial analysis technology of GIS, combining the urban spatial database and mathematical calculation model and the empirical formula of urban rainstorm intensity, the urban waterlogging disaster analysis model is established. Based on the technology of urban waterlogging model, a mathematical model of rainstorm waterlogging in Pudong District was established. At the same time, the model grid generalization model and calculation model are improved, and the urban river network, road network, pipeline network and community computing grid are divided into layers to form a zoning and multi-dimensional waterlogging calculation model. The model is the basis of calculation and Simulation of urban waterlogging and flooding. It can simulate and predict the characteristic data of urban waterlogging disasters according to the distribution of urban rainfall, such as spatial distribution, depth distribution, submerged area and submerged time of waterlogging and flooding. The simulation results can provide a basis for disaster prevention and mitigation departments to formulate disaster prevention and mitigation measures.
