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Buried recharge well and recharge system suitable for sponge city

A sponge city and recharge well technology, applied in drinking water installations, general water supply conservation, water/sludge/sewage treatment, etc., can solve problems such as the inability to quickly store rainwater geological changes, etc., to promote excretion, promote circulation, reduce The effect of surface runoff

Active Publication Date: 2020-11-17
江苏省地质工程勘察院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcomings of the prior art that rainwater cannot be stored quickly and the geological changes are relatively large, and a buried recharge well and a recharge system suitable for sponge cities are provided; by combining hydrogeological conditions, the After the rainwater is ecologically treated, it is safely stored in the aquifer. The method of the present invention has less changes to the geology. Further, the stored rainwater can be reused for life, production and agriculture

Method used

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  • Buried recharge well and recharge system suitable for sponge city
  • Buried recharge well and recharge system suitable for sponge city
  • Buried recharge well and recharge system suitable for sponge city

Examples

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Embodiment 1

[0039] Such as figure 1 As shown in Figure 2, a buried recharge well of the present invention, the outside of the buried recharge well is a miscellaneous fill layer 400, and the buried recharge well includes a recharge well pipeline 100, a fine sand layer 200 and a gravel layer 300, the reinjection well pipeline 100 is set in the aquifer, the diameter of the reinjection well pipeline 100 is d1, the permeability of the surface soil is tested by sampling, according to the on-site storage of rainwater and the geological structure of the natural aquifer, flexible selection The location and design of the project should be in accordance with the local geological conditions, which can not only store rainwater, but also avoid damage to the road. The hydrogeological conditions of the buried reinjection well in this example mainly exist two aquifers from top to bottom, which are the phreatic aquifer and the first confined aquifer respectively. The aquifer referred to in this example is ...

Embodiment 2

[0049] The content of this embodiment is basically the same as that of Embodiment 1, the difference is that a buried reinjection well of the present invention includes a reinjection well pipeline 100, a fine sand layer 200 and a gravel layer 300, and the reinjection well pipeline 100 is connected with a water-containing The reinjection well pipeline 100 has a diameter d1 of 1.1m. The reinjection well pipeline 100 is provided with an upper seepage section 110, a water guide section 130, and a seepage lower section 120 in sequence from top to bottom, wherein the seepage upper section of the reinjection well pipeline 100 The radial depth L1 of 110 is 0.5m, the radial depth L3 of the water guiding section 130 is 1m, the radial depth of the seepage lower section 120 is deeper than the radial depth of the water guiding section 130, and the radial depth of the seepage lower section 120 in this embodiment L4 is 1.5m.

[0050] The reinjection well pipeline 100 is provided with a fine s...

Embodiment 3

[0052] The content of this embodiment is basically the same as that of Embodiment 1, except that in a buried reinjection well of the present invention, the radial depth of the upper section 210 of the fine sand layer is L2, and the diameter of the seepage upper section 110 of the reinjection well pipeline 100 is The depth is L1, L1 Figure 2b shown), that is, the radial depth of the gravel layer 300 near the upper section 210 of the fine sand layer is L2, and the radial depth of the gravel layer 300 near the sidewall of the well body is L2', and L2'>L2. By setting the height of the step surface 101 close to the side of the reinjection well pipeline 100 to be lower than the height of the bottom of the seepage upper section 110, the gravel of the gravel layer 300 can be prevented from floating under the impact of rainwater and colliding with the fine sand layer 200. The fine sand is mixed, so that the gravel layer 300 and the fine sand layer 200 can better cooperate with each othe...

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Abstract

The invention discloses a buried recharge well and a recharge system suitable for a sponge city, and belongs to the technical field of underground water manual recharge and urban water conservancy facilities. The buried recharge well comprises a recharge well pipeline, a fine sand layer and a gravel layer, wherein the recharge well pipeline is connected with a water-bearing layer, a filter screenis arranged at the top of the recharge well pipeline, and the recharge well pipeline is sequentially provided with an upper seepage section, a water guide section and a lower seepage section from topto bottom; and the fine sand layer is arranged outside the recharge well pipeline, the gravel layer is arranged on the outer side of the fine sand layer, and the porosity of the fine sand layer is smaller than that of the gravel layer. According to the rainwater on-site storage device suitable for the sponge city, rainwater is retained and infiltrated to supplement underground water and continuously reduce the flood peak of rainstorm surface runoff, and suspended solids collected by the surface rainwater runoff can be effectively intercepted, so that the risk of blockage of the recharge well is reduced, and the recharge system suitable for the sponge city is an ecologically sustainable rainfall flood control and rainwater utilization facility.

Description

technical field [0001] The invention relates to the technical field of groundwater artificial recharge and urban water conservancy facilities, and more specifically relates to a buried recharge well and a recharge system suitable for sponge cities. Background technique [0002] In recent years, flood disasters have become a new urban disease that plagues major cities in China. Big cities such as Beijing, Wuhan, Shanghai, and Guangzhou will always be accompanied by floods and traffic paralysis after summer rainstorms. At the same time, my country More than 400 cities suffer from insufficient water supply. One of the important reasons for the concurrent shortage of water resources and flood disasters is that water resources are not fully utilized, but are discharged through the drainage system. However, the design standards of urban drainage facilities in my country are relatively low, and there is no perfect urban drainage standard system, which leads to Serious water accumula...

Claims

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Application Information

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IPC IPC(8): E03B3/02E03B3/32E03B3/34C02F3/34
CPCC02F3/34C02F2103/001C02F2203/006E03B3/02E03B3/32E03B3/34Y02A20/108Y02A20/406
Inventor 周红卫张沙莎施春华王琦杨仪
Owner 江苏省地质工程勘察院
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