The invention provides a method for building a city watercourse regulation and storage waterlogging prevention
system. The city watercourse regulation and storage waterlogging prevention
system comprises an overflow dyke, wet pond
wetland areas and a river
bank land area which are sequentially arranged from a watercourse to river
bank direction, and a mucky clay layer is arranged on a foundation
surface layer located between the watercourse and the river
bank land area. The method for building the city watercourse regulation and storage waterlogging prevention
system comprises the following steps that parts of waterfront belts located on the two sides of the watercourse are arranged as the wet pond
wetland areas, parts of existing watercourses located outside the watercourse blue line range are arranged as wet ponds, and the position of the wet ponds is enabled to correspond to a watercourse upper edge line planned originally; and building is carried out by using a construction mode ofloading soil with a
straw bag to form the overflow dyke, the
levee crown of the overflow dyke corresponds to the design
water level control line, and
dry stone walls are built on the
levee crown of the overflow dyke and a
levee slope of a backward watercourse. According to the method for building the city watercourse regulation and storage waterlogging prevention system, the parts of existing watercourses can be fully used, a foundation with the
surface layer of the mucky clay layer is adapted, the
ecological environment of the watercourse waterfront belts is enriched, and the regulation andstorage amount of the watercourse is increased.