A structure for pedestrian greenway hardening to replenish rainwater infiltration

Abstract

The invention discloses a structure for hardening, supplementing and infiltrating rainwater into a sidewalk greenway. The structure comprises the sidewalk greenway, wherein water infiltration and ventilation spaces are formed in two sides of the sidewalk greenway; each water infiltration and ventilation space comprises a water infiltration gas cavity and a water infiltration water cavity which are arranged in parallel and at an interval, and the water infiltration gas cavity is arranged on one side close to the sidewalk greenway; soil structures are arranged below the water infiltration gas cavities and the water infiltration water cavities; the water infiltration water cavities are used for rapidly infiltrating and supplementing the rainwater from a road surface of the sidewalk greenway to underground water through the soil structures on the lower side; and the water infiltration gas cavities are used for discharging gas in the soil structures, which is squeezed by rainwater infiltration. The structure considers different infiltration coefficients of gravels, coarse sand and fine sand, and the gravels, the coarse sand and the fine sand are reasonably distributed, so that runoff of the rainwater is reduced, and the contact area of the rainwater infiltration is also enlarged; the underground water is supplemented, and rainfall flood disasters are alleviated; and meanwhile, a gas direction is considered, and an exhausting pipeline is arranged, so that a rainwater infiltration speed is increased, and a flood discharge problem caused by urban concrete roads is really solved.

Description

technical field [0001] The invention belongs to the field of environmental drainage, and in particular relates to a structure for pavement greenway hardening and replenishing rainwater infiltration. Background technique [0002] With the rapid development of urban economy, my country's urbanization rate has increased rapidly. However, while the buildings, roads, and squares in the city are convenient for people's lives, the highly hardened ground brought by them hinders the infiltration of rainfall into the soil. . For example, the recharge coefficient of 50 mm of rainfall through the infiltration of clayey sand to groundwater is about 0.02-0.07, and more water will be retained in the shallow soil. In the unhardened area, the soil is like a huge water-absorbing sponge, absorbing rainfall through its own pores and compensating part of the rainfall through infiltration for groundwater, while the hardened ground in the city prevents the infiltration process of rainfall into the...

AI Technical Summary

Problems solved by technology

[0006] In view of the problems or defects existing in the prior art, the object of the present invention is to provide a structure for pedestrian greenway hardening to supply rainwater infiltration, which solves the problems of reduced rainwater infiltration surface and increased rainwater runoff caused by road surface hardening. Reduced damage from heavy rain

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