Sponge city road drainage system

Abstract

The invention discloses a sponge city road drainage system. The system comprises a drainage channel dug in a roadbed, an annular groove is dug in the roadbed, the annular groove is communicated with the drainage channel through a flow guide groove, a first baffle is slidably connected in the annular groove, and a second baffle is fixedly connected in the annular groove. The first baffle and the second baffle are elastically connected through a first spring, a filter screen is embedded in the flow guide groove, an arc-shaped groove is formed in the inner wall of the annular groove, and a watersupply pipe communicating with the annular groove is embedded in the roadbed. Rainwater containing a large amount of pollutants in the initial stage is guided into a sewage treatment system through ablow-off pipe, the road is gradually flushed cleanly by the rainwater as time goes by, and cleaner rainwater in the later stage can be directly guided into a designated place through the water supplypipe to be collected, so that the rainwater on the road surface is treated by stages, the rainwater absorption efficiency of a sponge city is guaranteed, and meanwhile, a polluted water source can betreated.

Description

technical field [0001] The invention relates to the relevant technical field of sponge city municipal construction, in particular to a sponge city road drainage system. Background technique [0002] In the construction process of sponge city, the design of drainage system is particularly important, especially for some southern cities with frequent rains, the discharge of road water is very critical. [0003] When building a sponge city, it is often necessary to collect rainwater and discharge it to a designated location when it is used. Since the rainwater on the road flows, it often carries a large amount of road pollutants, and the rainwater needs to be treated by the sewage treatment system first. However, if all the rainwater on the road surface is directly discharged into the sewage treatment system, the pressure on the urban sewage treatment system will be sharply increased, resulting in low efficiency of rainwater drainage on the road surface and causing water accumul...

AI Technical Summary

Problems solved by technology

[0003] When building a sponge city, it is often necessary to collect rainwater and discharge it to a designated location when it is used. Since the rainwater on the road flows, it often carries a large amount of road pollutants, and the rainwater needs to be treated by the sewage treatment system first. However, if all the rainwater on the road surface is directly discharged into the sewage treatment system, the pressure on the urban sewage treatment system will be sharply increased, resulting in low efficiency of rainwater drainage on the road surface and causing water accumulation on the road, which will not only affect traffic, but also reduce the cost of sponge cities. The absorption efficiency of rainwater

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