Municipal road drainage system and drainage method

Abstract

The invention discloses a municipal road drainage system and a drainage method. One part of rainwater is converged along a road surface to a municipal road gully and then enters a municipal rainwater pipeline; the other part of rainwater flows to a greenbelt between a motor way and a non-motor way through holes in curbs on two sides of the motor way; after the rainwater entering the greenbelt is filtered and purified by the greenbelt to infiltrate downwards, excessive rainwater flows into a permeation tube of a permeation drainage pipeline system to infiltrate downwards for replenishing the underground water, and the rainwater which does not infiltrate downwards quickly due to high rainfall intensity is drained through an overflow pipe of the permeation drainage pipeline system to the municipal rainwater pipeline under the motor way; the rainwater directly entering the municipal rainwater pipeline through the municipal road gully and the rainwater entering the municipal rainwater pipeline through the overflow pipe of the permeation drainage pipeline system are jointly drained to a nearby water body through the municipal rainwater pipeline. According to drainage performances of the greenbelt and the permeation drainage pipeline system, purification of initial contaminated rainwater, deceleration of peak discharge, relief of urban water logging, replenishment of underground water and the like are realized.

Description

technical field [0001] The invention relates to the technical field of urban drainage and waterlogging prevention engineering, in particular to a municipal road drainage system combining LID technology (low impact development technology), GSI (green infrastructure) and traditional municipal drainage system. Background technique [0002] With the acceleration of urbanization, the area of ​​built-up areas continues to expand, resulting in a substantial increase in impermeable areas, resulting in an increase in the runoff coefficient, an earlier flood peak, and an increase in flood volume under the same rainfall conditions, which pose a huge threat to urban drainage and waterlogging prevention and river flood discharge. The pressure also threatens the safety of the city. [0003] In view of the rapid development and construction of the city, the traditional road drainage technology only discharges rainwater through the rainwater outlet, and the drainage capacity of the pipeline...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problem of waterlogging and waterlogging in modern cities, municipal management departments have been unable to effectively solve the problem by adopting measures such as increasing the size standard of drainage pipes, increasing the number of drainage pipes and drainage channels, and building new drainage pumping stations. The development needs of building a sponge city are contrary

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