Method for building city watercourse regulation and storage waterlogging prevention system

Abstract

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.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a method for constructing an urban river channel storage and waterlogging prevention system. Background technique [0002] In recent years, some cities have been flooded every year due to heavy rainfall. Urban waterlogging is mainly manifested in the formation of rivers in streets, water inflow into houses, and backflow of river water. Urban waterlogging reflects the problems of urban drainage projects (such as the regulation and storage capacity of river channels). [0003] In order to solve the problem of large-scale runoff of urban rainwater, on-site partial consumption is the best method, but this requires a place to absorb rainwater, that is, the river channel needs to have sufficient regulation and storage capacity. The easiest way to increase the storage capacity of the river is to expand the size of the river and increase the scale of the river, but...

AI Technical Summary

Problems solved by technology

If the originally planned embankment 7 is built, the embankment height of the originally planned embankment 7 is about 4.2m, and the embankment load is relatively large. Part of the clay layer 8 is an inclined plane, which is very easy to slide under load

Therefore, before building the originally planned embankment 7, it is necessary to carry out foundation treatment, which further increases the project investment.

In addition, the originally planned embankment 7 occupies more of the existing river course, and 20m away from the upper mouth line of the originally planned river course is the originally planned landscape land, and the river course 1 is not organically combined with the originally planned landscape land

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