EFFECT OF THE WHOLE PROCESS WATERLOGGING CONTROL SYSTEM IN ALLEVIATING URBAN WATERLOGGING

In this paper, based on the integrated river drainage system model, Infoworks ICM, by coupling sponge cities, urban drainage pipe network, river, drainage pumping station system, the whole process of waterlogging prevention and control system model was established, which conducted coupling evaluation of three processes of waterlogging, including source, process and end. It made up the deficiency of single simulated pipe network or sponge system in traditional waterlogging control measures. The advantages of establishing waterlogging prevention and control system in the whole process were analyzed by simulating the current situation, expanding and perfecting pipeline network system, building low-impact development system and perfecting drainage pumping station system, separately. The simulation results indicated that the coupling effect of the three measures was enhanced to varying degrees on the basis of the present situation. The drainage capacity of pipelines increased gradually, and the area of waterlogging risk decreased by 13.5%, 39.4% and 86.9% through the three measures, respectively. In addition, the waterlogging risk couldn't be throughly solved by one single waterlogging control measure. Therefore, it's effective and ungent to establish a complete waterlogging control system in the whole process.