The invention relates to an urban inland inundation
intelligent modeling and
analysis method based on a GIS and an SWMM. The method comprises the following steps: constructing a
simulation system based on the GIS and the SWMM; carrying out automatic preprocessing on the model data and automatically identifying topology errors; calculating a hydrological-hydrodynamic
coupling model based on the SWMM by combining rainfall, calculating the amount of rainwater converged into a drainage
pipe network
system, simulating to obtain actual condition information in the drainage
pipe network, and obtaining
pipe point overflow data; performing
surface water inundation analysis according to the pipe point overflow data, simulating the
surface water to obtain the depth of the
surface water, and distributing the surface
water flow based on a window method; performing early warning analysis on waterlogging of surface water, comprehensively considering prediction of the surface water, automatically dividing waterlogging risk levels of different areas according to a calculation result of a hydrological-hydrodynamic
coupling model and a result of surface water inundation analysis, and providing an early warning scheme for drainage waterlogging prevention emergency. The method has the advantages of being low in construction cost, high in model
construction automation degree and accurate in analysisresult.