Exploration of the Implementation Path of Sponge Cities in Plain River Network Areas Guided by Flood Control——Case study of Systematic Implementation Plan of Suqian National Sponge City Demonstration
In view of the drainage characteristics and problems of the plain river network area,targeted flood control strategies are classified and proposed on the basis of combing and constructing the drainage pattern of the flood control area.For flood control areas with a certain slope that can achieve self drainage in most periods,the"upper storage+middle separation+lower drainage"mode is adopted to gradually alleviate the drainage pres-sure and improve the urban drainage standards.For the waterlogging control area with low-lying terrain as a whole,which is difficult to discharge by itself in most periods,the mode of"building gates to operate dikes,and combining storage and drainage"is adopted.The mode of building small rain-water pump stations at the rainwater outlets is adjusted to the mode of building large waterlogging pump stations at the end of the main drainage river in the area,making full use of the transmission and storage capacity of the internal river network in the area,and enhancing the resilience of the urban area to cope with rainstorm.
Sponge Cityplain river network areaflood controlsystematic planning
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