基于GIS技术的海绵城市雨污分流排水管网规划研究OA

In order to optimize the planning effect of rainwater and sewage diversion in sponge cities,improve the centralized collection rate of sewage,and enhance the urban water environment,the Geographic Information System(GIS)technology is used to conduct research on the planning of rainwater and sewage diversion and drainage pipe networks in sponge cities.Firstly,collect basic geographic data,meteorological and hydrological data,and urban facility data of sponge cities,and establish a spatial database using GIS technology.Secondly,conduct hydrological simulations on sponge cities to estimate surface runoff and initial rainfall runoff,and obtain comprehensive hydrological data support.Finally,determine the maximum design flow rate of the sewage pipeline,plan the rainwater and sewage diversion drainage network,so that rainwater and domestic sewage are discharged into two different drainage arteries.The experimental results show that this method exhibits a high centralized sewage collection rate under different rainfall conditions,effectively improving the operation efficiency of the rainwater and sewage diversion drainage network.