Pavement permeable pavement combined concave greenbelt sponge city structure

Abstract

The invention discloses a pavement permeable pavement combined concave greenbelt sponge city structure. The system comprises a rainwater outlet structure, a permeable sidewalk structure and an urban water storage sponge body, the rainwater outlet structure comprises a water collecting well provided with a rainwater grate. An overflow drain pipe with a water inlet at the upper part is arranged in the water collecting well; the water outlet is formed in the water collecting well; a sidewalk seepage pipe is arranged at the inner bottom of the permeable sidewalk structure, an overflow pipe is arranged in the urban water storage sponge body, and the horizontal height of an overflow opening in the overflow pipe is equal to that of the upper end face of an overflow drain pipe and is larger than that of a water outlet in the water collecting well. The utilization rate of the urban water storage sponge body can be increased, rainwater can be drained into a municipal rainwater drainage system through the overflow drainage pipe after the urban water storage sponge body reaches the maximum water storage capacity, and through the horizontal position design of overflow in the urban water storagesponge body, the urban water storage and drainage capacity can be improved, and municipal drainage pressure is reduced.

Description

technical field [0001] The invention belongs to the technical field of municipal engineering, and in particular relates to a sponge city structure combined with permeable pavement of sidewalks and sunken green land. Background technique [0002] Sponge city is to maximize the accumulation, infiltration and purification of rainwater in the urban area on the premise of ensuring the safety of urban drainage and waterlogging, and to promote the utilization of rainwater resources and the protection of the ecological environment. [0003] In the existing road drainage system of the sponge city, the rainwater is introduced into the sponge stagnation system through the pipeline through the permeable structure of the sidewalk, while the rainwater from the motorway is directly discharged into the municipal rainwater pipe network through the rainwater grate through the rainwater outlet. In this way, the motorized The rainwater in the driveway did not enter the sponge storage system, re...

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Problems solved by technology

[0003] In the existing road drainage system of the sponge city, the rainwater is introduced into the sponge stagnation system through the pipeline through the permeable structure of the sidewalk, while the rainwater from the motorway is directly discharged into the municipal rainwater pipe network through the rainwater grate through the rainwater outlet. In this way, the motorized The rainwater in the driveway did not enter the sponge storage system, resulting in the sponge storage system not reaching the maximum utilization efficiency; if the rainfall is particularly large, when the sponge storage system reaches the maximum utilization rate, the sponge storage system will easily appear The phenomenon of internal rainwater backflow increases the drainage pressure of the municipal rainwater pipe network

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