System using green land rainwater for compensating urban groundwater

Abstract

The invention provides a system using green land rainwater for compensating urban groundwater. A green land is a concave green land, the center of the concave green land is the lowest, the ground of the concave green land is in a steep and gentle combination shape, a rainwater collection unit and an infiltration compensating unit are arranged on the concave green land, the infiltration compensating unit comprises a grit layer A, a gravel layer, a thinnest medical stone layer, a thickest large gravel layer and a grit layer B sequentially from top to bottom, the thickness of the medical stone layer is 50-100cm, the thickness of the large gravel layer is 100-1000cm, the infiltration compensating unit is buried in the concave green land, a top infiltration port is positioned at the center of the concave green land, rainwater enters the infiltration compensating unit through the infiltration port, rest portions on the concave green land belong to the rainwater collection unit, and porous frameworks and broken stones are laid below the soil layer of the rainwater collection unit. The system overcomes the shortcomings of the prior art, is simple in construction and operation and has good water quality treatment effect.

Description

technical field [0001] The invention provides a system for compensating urban groundwater by using rainwater in green spaces, in particular a system capable of efficiently utilizing rainwater in green spaces, improving the infiltration capacity of rainwater in green spaces and compensating for urban groundwater. Background technique [0002] With the acceleration of urbanization, the water consumption is increasing, and modern life and production produce a large amount of sewage, which makes the urban water resource crisis more and more serious. In order to meet the needs of urban water resources, people have increased the exploitation of groundwater, resulting in serious overexploitation, a sharp decrease in urban underground water storage, a continuous decline in groundwater levels, a corresponding expansion of the area of ​​​​the underground funnel, and ground subsidence, subsidence, and cracking. and other geological disasters. At the same time, due to the overexploitat...

AI Technical Summary

Problems solved by technology

However, due to the limited infiltration capacity of the green land soil, how to speed up the rainwater infiltration and recharge of the green land to compensate the urban groundwater has become an urgent problem to be solved.

[0003] In recent years, many schemes and devices have emerged in the use of rainwater to compensate urban groundwater. Most of them use roof rainwater or ground rainwater, often ignoring the green space, a natural infiltration channel. Other channels require a lot of cost for rainwater recharge. , and need to invest more in rainwater quality treatment, if the rainwater quality treatment is not up to standard, it will cause great pollution and impact on the entire underground water circle

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