Bioretention facility for sponge urban road

Abstract

The invention provides a bioretention facility for a sponge urban road. The bioretention facility comprises a sunken green belt, an underground rainwater pipeline and a plurality of rainwater wells, the sunken green belt is arranged between a motor vehicle lane and an auxiliary road, the elevation of the sunken green belt is lower than the elevation of the motor vehicle lane and the auxiliary road, and the sunken green belt comprises an undisturbed soil layer, a first gravel layer, a permeable geotextile, a quartz sand water storage layer, a planting soil layer and a bark covering layer in sequence from bottom to top; the underground rainwater pipeline is buried under the sunken green belt, the auxiliary road and the sidewalk, and the underground rainwater pipeline under the sunken green belt is located in the first gravel layer; and the multiple rainwater wells are arranged in the sunken green belt, and all the rainwater wells communicate with the underground rainwater pipeline. The rainwater wells and the underground rainwater pipeline form a vertically-communicating rainwater channel facilitating rainwater circulation. The sunken green belt is arranged in a layered mode, and the problems of rain wash, sinking and the like can be solved. The urban road is subjected to sunken greening transformation, so that stagnant flow, permeation, purification and storage of rainwater are realized, and particularly, the prevention of flood disasters in rare heavy rainfall weather is enhanced.

Description

technical field [0001] The invention belongs to the field of urban roads, and in particular relates to a complex biological retention facility suitable for sponge city roads. Background technique [0002] Sponge city refers to the city's good "elasticity" in terms of adapting to environmental changes and dealing with natural disasters caused by rain. With the concept of source control of storage, diversion, infiltration, and purification, the problems caused by traditional rainwater management technology are solved, the negative impact of urbanization on the water cycle process is effectively reduced, and a comfortable and pleasant water landscape city is created. Among them, bioretention facilities are one of the most widely used facilities for sponge city construction, and can be divided into simple and complex types. The complex bioretention facility structure can prevent the intrusion of the surrounding original soil. When it is applied on the road, it can protect the s...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the object of the present invention is to provide a bioretention facility for sponge city roads, to solve or overcome at least one technical problem existing in the prior art

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