Efficient and anti-blocking water-bearing stratum supply device

An anti-clogging and aquifer technology, applied in the direction of soil protection, loose filter material filters, gravity filters, etc., can solve the problems of recharge efficiency, clogging and energy consumption, clogging, and low water volume of a single well at the same time problems, to achieve the effect of preventing clogging, convenient construction and high recharge efficiency

Inactive Publication Date: 2014-12-10
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In order to solve the problem of reinjection clogging, Chinese patent CN201120432424 discloses a device for preventing clogging of groundwater reinjection wells, which is connected to the desander through multi-stage pipelines and conversion boxes to solve the problem of

Method used

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  • Efficient and anti-blocking water-bearing stratum supply device
  • Efficient and anti-blocking water-bearing stratum supply device

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0023] Example 1

[0024] A high-efficiency anti-clogging aquifer replenishment device, including a ditch (1), a plurality of water filtration and silt dredging devices (2) vertically distributed along the ditch (1), each of which includes a pre-filter The device (3), the rear dredging well (5), and an underground filter pipe (4) densely packed with water holes for connecting the pre-filtering device (3) and the rear dredging well (5); The filter device (3) is arranged at the bottom of the ditch (1), and the rear dredging well (5) is located at the other end of the underground water filter pipe (4).

[0025] The pre-filter device (3) is composed of geotextile a (6), filter material (7), perforated supporting layer (8), flooded space (9) and base (10) from top to bottom; Geotextile a(6) is spread on the surface of the filter material (7); the filter material (7) is spread on the surface of the supporting layer (8); the supporting layer (8) has small holes; the flooded space (9) Co...

Example Embodiment

[0028] Example 2

[0029] A high-efficiency anti-clogging aquifer replenishment device, the structure of which is the same as that of Embodiment 1.

[0030] Among them, the aperture of the circular filter hole (13) d 0 =3 d 50 , Hole spacing L 0 =1.2 d 0 ,among them d 0 Is the diameter of the hole, L 0 Is the distance between round holes, d 50 It is the largest particle diameter when the total screening weight of the rock and soil sample at the location of the water filter tube is 50%. Filter material (7) particle size D 50 =7 d 50 ,among them D 50 In the composition of the particles of the filter material sieving sample, the cumulative weight of the sieving is 50% of the largest particle diameter, d 50 It is the largest particle diameter where the weight of the source cement sand particles accounts for 50%. The gradient of the underground filter pipe (4) is set to 1 / 500; the height of the flooded space (9) is H=2D, where D is the diameter of the underground filter pipe (4); t...

Example Embodiment

[0031] Example 3

[0032] A high-efficiency anti-clogging aquifer replenishment device, the structure of which is the same as that of Embodiment 1.

[0033] Among them, the aperture of the circular filter hole (13) d 0 =5 d 50 , Hole spacing L 0 =1.5 d 0 ,among them d 0 Is the diameter of the hole, L 0 Is the distance between round holes, d 50 It is the largest particle diameter when the total screening weight of the rock and soil sample at the location of the water filter tube is 50%. Filter material (7) particle size D 50 = 8 d 50 ,among them D 50 In the composition of the particles of the filter material sieving sample, the cumulative weight of the sieving is 50% of the largest particle diameter, d 50 It is the largest particle diameter where the weight of the source cement sand particles accounts for 50%. The gradient of the underground filter pipe (4) is set to 1 / 600; the height of the flooded space (9) is H=7D, where D is the diameter of the underground filter pipe (4); ...

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Abstract

The invention discloses an efficient and anti-blocking water-bearing stratum supply device, and belongs to the technical field of water-bearing stratum supply, namely artificial underground water recharge. The device comprises a channel (1) and a plurality of water filtering and dredging devices (2) vertically distributed along the channel (1). Each water filtering and dredging device (2) comprises a front-arranged filter unit (3), a rear-arranged dredging well (5) and an underground filter pipe (4) densely provided with water through holes and communicating the front-arranged filter unit (3) and the rear-arranged dredging well (5). The front-arranged filter unit (3) is arranged at the bottom of the channel (1), and the rear-arranged dredging well (5) is arranged at the other end of the filter pipe (4). The efficient and anti-blocking water-bearing stratum supply device has the remarkable advantages of being simple in design structure, small in occupied space, high in underground water supply efficiency, free of energy consumption, convenient to construct, low in cost and the like.

Description

technical field [0001] The invention relates to the technical field of aquifer recharge, that is, groundwater artificial recharge, and in particular to an aquifer recharge device with high efficiency and anti-clogging. Background technique [0002] Water resources are scarce in northern China, and groundwater plays a vital role in agricultural and urban water supply. However, due to the overexploitation of agricultural and urban water use, groundwater overexploitation has caused a large area of ​​groundwater funnel area and caused various environmental geological problems. In areas with excess flood and diverted water, in order to increase the amount of groundwater resources, technical measures of aquifer recharge such as surface seepage (ditches, canals, basins, etc.) and well water injection recharge have appeared. However, although the ditch, canal, and basin seepage replenishment technology has a small investment and good effect, it occupies a large area and affects agri...

Claims

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Application Information

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IPC IPC(8): E02D3/00B01D24/14
Inventor 王维平李法金邓海燕马喜堂徐巧艺张金黄强孙广浩
Owner UNIV OF JINAN
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