Urban green space system planning mechanism based on rain flood collaborative management

In order to resolve the serious survival problems of China's urban waterlogging and water shortages, the planning update method of sponge urban construction-green space system was used as the basic research object and the storm water management system of city landscape planning was built after studying the formation cause of the urban rainstorm waterlogging. Meanwhile, GIS platform was used to calculate the relevant indicator of the urban green space and storm water management. Moreover, the visible model rehearsal of urban green space generated by forming superposed landform based on the rainfall data could also be done by several evaluation methods, which included managing the demand of the total amount of rainfall ecological green space in city, the topological relationship of plaque green space and the rain flood ecology, and the water storage and purification ability of green space. The results show that on the premise of forming the effective communication between urban green space planning and urban pipe network superposition, the amount of water intercepted by the green space system can be calculated when the vertical precipitation is gathered by urban greenland soil and the spatial topology aggregation effect of green space/plaque generated. It means the vertical self-restraint of urban rain flood on the green space system and the effective discharge of rain flood through pipe gallery, which can be seen as the dual system coordination mechanism of green space and rain flood management. © 2016, Central South University Press. All right reserved.