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Overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system

An underground pipe network and coupling system technology, applied to watering devices, filtration circuits, separation methods, etc., can solve problems such as water waste, reduce filtration efficiency, and affect water flow, so as to avoid engineering volume and land occupation, and improve soil quality. Moisture content, the effect of accelerating the recharge process

Active Publication Date: 2020-01-10
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The natural infiltration of the channel cannot be adjusted manually according to the water volume. The flood season causes water waste. When the water level drops during the non-flood season, the normal operation of the device cannot be guaranteed, and the filter device placed at the bottom of the river will occupy the river area, affect the water flow, and cause sediment deposition. When the filter screen is blocked, the filter efficiency will be reduced.
This device is only aimed at groundwater recharge, ignoring the impact of surface irrigation on groundwater. Surface flooding will cause pollutants such as pesticides and fertilizers to leaching into groundwater, leading to serious ecological problems such as groundwater pollution, and does not consider the development and utilization of recharge water.

Method used

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  • Overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system
  • Overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system
  • Overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A coupling system of surface water-saving irrigation in over-exploitation areas and low-pressure underground pipe network recharge and supplementary extraction. It can get rid of the limitation of ditches and avoid the amount of work and land area caused by excavation of ditches. It uses pumping to make water intake. More convenient and flexible. It includes water source 1, filter tank 11, underground pipe network, surface drip irrigation 2 and groundwater replenishment.

[0035] The filter tank 11, the water inlet end of the filter tank 11 is connected to the water source 1 through the first centrifugal pump 25 and the first delivery pipe 26;

[0036] The underground pipe network includes a plurality of inter-connected underground water filter pipes 20 arranged in a crisscross pattern. One end of the underground water filter pipe 20 is connected to the filter tank through a water collection pipe 19, and the other end is connected to the grit tank 24;

[0037] Surface drip ir...

Embodiment 2

[0107] A coupling system of surface water-saving irrigation and low-pressure underground pipe network recharge and supplementary extraction in an over-extraction area, and its structure is the same as that of Embodiment 1.

[0108] In this embodiment, the filter tank 11 is 5m long, 5m wide, and 3m high. The water level of the buffer water distribution zone 13 is 2m, the filter material 15 is 0.4m, and the supporting layer 16 is 0.1m thick. The height of the space 17 is 0.5 m.

[0109] Its aperture d 0 = 3d 50 , Hole spacing L 0 =1.2d 0 , Where 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 rock and soil samples at the location of the underground water filter pipe is 50%. Filter material 15 particle size D 50 = 7d 50 ′, where D 50 Is the largest particle diameter of 50% of the sieved weight in the particle composition of the filter material, d 50 ′ Is the largest particle diameter ...

Embodiment 3

[0122] A coupling system of surface water-saving irrigation and low-pressure underground pipe network recharge and supplementary extraction in an over-extraction area, and its structure is the same as that of Embodiment 1.

[0123] In this embodiment, the filter tank 11 is 6m in length, 6m in width, and 3m in height, the water level of the buffer water distribution zone 13 is 2m, the height of the filter material 15 is 0.4m, and the thickness of the supporting layer 16 is 0.1m. The height of the space 17 is 0.5 m. The diameter of the circular filter hole 22 is d0=5d50, the hole spacing L0=1.5d0, where d0 is the diameter of the round hole, L0 is the hole spacing, and d50 is the cumulative sieving weight of the rock and soil sample at the location of the water filter pipe is 50% Maximum particle diameter. The particle size of the filter material 15 is D50=8d50, where D50 is the maximum particle diameter of 50% of the total sieved weight in the particle composition of the filter ma...

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Abstract

The invention provides an overexploitation area surface water-saving irrigation and low-pressure underground pipe network recharge exploitation supplement coupled system which comprises a water source, a filter tank, an underground pipe network, a surface drip irrigation device and an underground water recharge device. The water inlet end of the filter tank is communicated with the water source through a first centrifugal pump and a first conveying pipeline, the underground pipe network comprises a plurality of underground water filter pipes which are vertically and horizontally staggered andmutually communicated, one end of each underground water filter pipe is connected with the filter tank through a water collecting pipe, the other end of each underground water filter pipe is connectedwith a settling tank, the surface drip irrigation device comprises a pivot head, a drip irrigation belt and a drip irrigation head, one end of the pivot head is connected with the water outlet end ofthe filter tank, the other end of the pivot head is connected with multi-row main pipes, multi-line branch main pipes are connected with the main pipes, the drip irrigation belt is connected with thebranch main pipes, the drip irrigation head is arranged on the drip irrigation belt, the underground water recharge device comprises an exploited well, and underground water is conveyed into the irrigation belt through a second centrifugal pump and a water conveying pipeline.

Description

Technical field [0001] The utility model relates to a coupling system of surface water-saving irrigation and low-pressure underground pipe network recharge and supplementary extraction in an over-extraction area, which belongs to the technical field of groundwater artificial recharge. Background technique [0002] Managed Aquifer Recharge-Managed Aquifer Recharge, referred to as MAR, is to recharge water into the aquifer under controllable conditions. The purpose is to re-explore or protect the aquifer after a period of time. It is effective for integrated water resources management. One of the measures. In response to environmental geological problems such as groundwater over-exploitation and underground funnels in northern China, aquifer replenishment measures such as surface water seepage and well water replenishment have been proposed. However, although the ground water seepage method has a small investment and good effect, it covers a large area; the well water injection ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G25/02B01D36/02B01D36/04
CPCA01G25/02B01D36/02B01D36/04
Inventor 王维平李文良曲士松刘振赵伟东徐巧艺
Owner UNIV OF JINAN
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