CN111809689A - Construction method for recharging fresh water in river to underground reservoir - Google Patents
Construction method for recharging fresh water in river to underground reservoir Download PDFInfo
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- CN111809689A CN111809689A CN202010634616.XA CN202010634616A CN111809689A CN 111809689 A CN111809689 A CN 111809689A CN 202010634616 A CN202010634616 A CN 202010634616A CN 111809689 A CN111809689 A CN 111809689A
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- 239000013505 freshwater Substances 0.000 title claims abstract description 33
- 238000010276 construction Methods 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 189
- 230000035699 permeability Effects 0.000 claims abstract description 22
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 230000009471 action Effects 0.000 claims abstract description 8
- 230000000903 blocking effect Effects 0.000 claims abstract description 8
- 239000004927 clay Substances 0.000 claims description 23
- 239000004576 sand Substances 0.000 claims description 14
- 230000005484 gravity Effects 0.000 claims description 8
- 239000002689 soil Substances 0.000 claims description 8
- 239000011148 porous material Substances 0.000 claims description 3
- 238000005381 potential energy Methods 0.000 claims description 2
- 238000005553 drilling Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
- E03B3/36—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river of surface water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/02—Fixed barrages
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B5/00—Use of pumping plants or installations; Layouts thereof
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
- Sewage (AREA)
Abstract
The invention relates to a construction method for recharging fresh water in a river to an underground reservoir, which comprises the following steps: the method comprises the following steps of taking a stratum funnel area with low underground water level or depleted underground water as an underground reservoir, selecting a nearest fresh water river with high terrain near the underground reservoir as a water taking point, and selecting a stratum with better water permeability between the water taking point and the underground reservoir as an underground water channel or an underground river; building a dam at a water taking point, building a reservoir near the bank of the dam, and introducing river water at the upstream of a river into the reservoir to meet the reinjection water standard; the method is characterized in that a plurality of recharging wells are drilled on an underground water channel or an underground river close to a reservoir, two rows of water blocking walls are built on the underground water channel or the underground river between the reservoir and an underground reservoir through connected water blocking piles, and river water in the reservoir is led into the recharging wells and is recharged into the underground reservoir through the underground water channel or the underground river formed by a stratum with better water permeability under the action of the terrain difference between the recharging wells and the underground reservoir and the water head difference in the recharging wells.
Description
Technical Field
The invention relates to a construction method for storing river fresh water into an underground reservoir, in particular to a construction method for storing river fresh water into an underground reservoir by taking an underground water space as the underground reservoir.
Background
Water is a natural resource which depends on human survival and is not renewable in social development, and is a strategic material of human life. The fresh water of nature is limited and is not inexhaustible. The total amount of underground fresh water resources in China is about 2.8 trillion m3In the fourth world, and all people are only 2100m31/4 is the amount of people in the world, belongs to one of 13 countries with serious water shortage published by United nations, the current 2/3 cities in the country use underground water as a main water supply source, about 1/4 underground water for farmland irrigation, and China mines 1000 hundred million m of underground water every year3The above.
The invention content is as follows:
the invention aims to store river fresh water into an underground water large funnel, and provides a construction method for recharging the river fresh water into an underground reservoir.
In order to achieve the purpose of the invention, the following technical scheme is adopted in the application:
the invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: it comprises the following steps:
(1) taking a stratum funnel area with low underground water level or depleted underground water as an underground reservoir, selecting a nearest fresh water river with high terrain near the underground reservoir as a water taking point, exploring the stratum between the water taking point and the underground reservoir, and selecting the stratum with better water permeability between the water taking point and the underground reservoir as an underground water channel or an underground river;
(2) constructing a dam at the water taking point, wherein the dam intercepts the river at the water taking point into the upstream river and the downstream river;
(3) building a reservoir on the bank close to the dam, introducing river water at the upstream of the river into the reservoir, and treating the river water in the reservoir to meet the reinjection water standard;
(4) drilling a plurality of recharging wells on the underground water channel or the underground river close to the reservoir, wherein the recharging wells are drilled into at least the clay layer below the permeable layer;
(5) building two rows of water blocking walls on an underground water channel or an underground river between the reservoir and the underground reservoir through connected water blocking piles, enclosing the recharge wells in the two rows of water blocking walls, and drilling the water blocking piles into at least a clay layer under a stratum with better water permeability;
(6) and introducing the river water in the reservoir into the recharge well, and recharging the river water into the underground reservoir through an underground water channel or an underground river formed by the stratum with better water permeability under the action of the potential energy difference between the recharge well and the underground reservoir and the water head difference in the recharge well.
The invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: between step (5) and step (6) further include:
the method comprises the steps of drilling a plurality of relay recharging wells in two rows of water blocking walls close to an underground reservoir, drilling the relay recharging wells into at least a clay layer under a stratum with better water permeability, pumping underground water in the relay recharging wells by using a pump, and filling water with volume into an underground water channel through the recharging wells to change a soil layer in the channel into an unsaturated state, wherein the water flows into the underground reservoir under the action of gravity of the water and the terrain gradient through free water in large pores communicated with the soil.
The invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: the underground reservoir is formed by the descent of underground water caused by nature or man-made factors, and has the function of storing water.
The invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: the stratum with better water permeability is a medium sand layer, a coarse sand layer, a gravel layer, a crushed stone layer or an artificial water permeable layer of the stratum.
The invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: the underground water channel is formed by pressing water into the underground reservoir from the recharging well by the pressure of the water level pressure difference.
The invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: the underground river is a water channel formed by water flowing from the recharge well to the underground reservoir by self gravity and terrain slope.
The invention relates to a construction method for recharging fresh water in rivers to an underground reservoir, which comprises the following steps: the river fresh water naturally flows into the recharging well without power, the water surface in the recharging well is kept to a certain height throughout the year, and the fresh water is naturally pressed into the underground reservoir through the water head difference from the water surface of the recharging well to the water surface of the underground reservoir.
The invention has the outstanding characteristics that: firstly, water naturally flows into a recharge well, flows into an underground reservoir through an underground water channel, rises to a set position of a stratum through a capillary tube, and does not consume power and energy; secondly, the water is transported from the fresh water river to the underground reservoir by the underground permeable layer without damaging the ground land and the building.
A construction method for recharging fresh water in river to underground reservoir features that the fresh water in river is stored in underground reservoir to make farmland and newly-built city grow naturally, improve the salinized coastal land and solve the problem of domestic water in city and countryside. The construction method of recharging the river fresh water into the underground reservoir has the advantages that due to the fact that economic construction extracts a large amount of underground water, the underground water is large in funnel, and the river fresh water is recharged into the underground water large funnel.
Drawings
FIG. 1 is a construction method of the present invention for recharging fresh water from rivers to underground reservoirs, which is to recharge fresh water from rivers to underground reservoirs in areas where the underground water descends to form large funnels naturally;
FIG. 2 is a schematic cross-sectional view A-A of FIG. 1;
fig. 3 is an enlarged sectional view of a recharge well or relay recharge well.
In fig. 1 to 3, reference numeral 1 denotes a water intake point; the reference numeral 2 is a dam; the reference number 3 is a reservoir; reference numeral 4 is a recharge well; reference numeral 5 is a relay recharging well; reference numeral 6 is a water shutoff wall; reference numeral 7 is an underground reservoir; reference numeral 8 is a stratum having good water permeability; reference numeral 9 is a powdery clay layer; the reference number 10 is a clay silt layer; reference numeral 11 is a spun yarn layer; reference numeral 12 is a clay layer; reference numeral 13 is a clay silt layer; reference numeral 14 is a groundwater passage or river; reference numeral 15 is a water pipe; reference numeral 16 is a water shutoff pile; reference numeral 17 is a filter layer; reference numeral 18 denotes a water outlet; reference numeral 19 is a hard filter material.
Detailed Description
Example 1
As shown in fig. 1 to 3, the construction method for recharging fresh water in rivers to underground reservoirs of the invention comprises the following steps:
(1) taking a stratum funnel area with low underground water level or depleted underground water as an underground reservoir 7, selecting a nearest river with high terrain near the underground reservoir 7 as a water taking point 1, exploring the stratum between the water taking point 1 and the underground reservoir 7, and selecting a stratum 8 with better water permeability in the stratum between the water taking point 1 and the underground reservoir 7 as an underground water channel or an underground river 14;
(2) building a dam 2 at the water taking point 1, wherein the dam 2 intercepts the river at the water taking point 1 into an upstream river and a downstream river;
(3) building a reservoir 3 on the bank side close to the dam 2, introducing river water at the upstream of the river into the reservoir 3, and treating the river water in the reservoir 3 to meet the reinjection water standard;
(4) a plurality of recharging wells 4 are drilled on an underground water channel or an underground river 14 close to the reservoir 3, and the recharging wells 4 are drilled at least into a clay layer 12 below the permeable layer 8;
(5) two rows of water plugging walls 6 are built on an underground water channel or an underground river 14 between the reservoir 3 and the underground reservoir 7 through connected water plugging piles 16, the recharge wells 4 are enclosed in the two rows of water plugging walls 6, and the water plugging piles 16 are at least drilled into a clay layer 12 below a stratum 8 with better water permeability;
(6) and river water in the reservoir 3 is introduced into the recharge well 4, and the river water is recharged into the underground reservoir 7 through an underground water channel or an underground river 14 formed by the stratum 8 with better water permeability under the action of the potential difference between the recharge well 4 and the underground reservoir 7 and the water head difference in the recharge well 4.
The underground water reservoir 7 is formed by the descent of underground water, which is naturally or artificially created, and has a function of storing water. The stratum 8 of better permeability is a medium sand layer, a coarse sand layer, a gravel layer, a crushed stone layer or an artificial permeable layer. The underground water passage 14 is a water passage formed by pressing water from the recharge well 4 into the underground water reservoir 7 by the pressure of the water level difference. The underground river 14 is a water channel formed by water flowing from the recharge well 4 to the underground reservoir 7 by gravity and by the slope of the terrain.
As shown in figure 3, a water pipe 15 is arranged in the recharging well 4, the outer wall of the water pipe 15 in the middle sand layer 8 is wrapped by a filter layer 17, a plurality of water outlet holes 18 are formed in the side wall of the water pipe 15 wrapping the filter layer 17, hard filter materials 19 are filled in a clay layer 12, the middle sand layer 8, a fine sand layer 11, a sticky silt layer 10 and a fine clay layer 9 between the recharging well 4 and the water pipe 15, and fine clay is filled in the fine clay layer 9 which is 1-2 m close to the ground.
Example 2
As shown in fig. 1 to 3, the construction method for recharging fresh water in rivers to underground reservoirs of the invention comprises the following steps:
(1) the method comprises the following steps of taking a stratum funnel area with low underground water level or depleted underground water as an underground reservoir 7, selecting a nearest river with high terrain near the underground reservoir 7 as a water taking point 1, exploring the stratum between the water taking point 1 and the underground reservoir 7, and selecting the stratum 8 with better water permeability in the stratum between the water taking point 1 and the underground reservoir 7 as an underground water channel or an underground river 14;
(2) a dam 2 is built at the water taking point 1, and the dam 2 intercepts the river at the water taking point 1 into the upstream river and the downstream river;
(3) building a reservoir 3 on the bank side close to the dam 2, introducing river water at the upstream of the river into the reservoir 3, and treating the river water in the reservoir 3 to meet the reinjection water standard;
(4) a plurality of recharging wells 4 are drilled on an underground water channel or an underground river 14 close to the reservoir 3, and the recharging wells 4 are drilled at least into a clay layer 12 below the permeable layer 8;
(5) two rows of water plugging walls 6 are built on an underground water channel or an underground river 14 between the reservoir 3 and the underground reservoir 7 through connected water plugging piles 16, the recharge wells 4 are enclosed in the two rows of water plugging walls 6, and the water plugging piles 16 are at least drilled into a clay layer 12 below a stratum 8 with better water permeability;
(6) the relay recharging wells 5 are drilled into at least a clay layer 12 below a stratum 8 with better water permeability, the underground water in the underground water channel is pumped by a pump through the relay recharging wells 5, 1/2-volume water is filled into the underground water channel through the recharging wells, the soil layer in the channel is changed into an unsaturated state, and the water flows into the underground reservoir 7 under the action of the gravity of the water and the terrain gradient through free water in large pores communicated with the soil.
(7) And river water in the reservoir 3 is introduced into the recharge well 4, and the river water is recharged into the underground reservoir 7 through an underground water channel or an underground river 14 formed by the stratum 8 with better water permeability depending on the earth potential difference between the recharge well 4 and the underground reservoir 7 and the water pressure in the recharge well 4.
The underground water reservoir 7 is formed by the descent of underground water, which is naturally or artificially created, and has a function of storing water. The formation 8 of better permeability is a medium sand layer, a coarse sand layer, a gravel layer, a crushed stone layer or an artificial permeable layer of the formation. The underground water passage 14 is a water passage formed by pressing water from the recharge well 4 into the underground water reservoir 7 by the pressure of the water level difference. The underground river 14 is a water channel formed by water flowing from the recharge well 4 to the underground reservoir 7 by gravity and terrain slope. The underground river is specifically made by arranging a plurality of relay recharging wells 5 in an underground water channel, pumping water in the underground water channel through the relay recharging wells, injecting 1/2 water into the underground water channel through the recharging wells to change soil in the channel into an unsaturated state, enabling the water to flow into a low underground reservoir 7 from a high position under the action of self gravity through a framework gap communicated with the soil, namely unsaturated permeation, and enabling the water to flow into a ground river from the same position.
As shown in fig. 3, water pipes 15 are installed in the recharging well 4 and the relay recharging well 5, the outer wall of the water pipe 15 in the medium sand layer 8 is wrapped by a filter layer 17, a plurality of water outlet holes 18 are formed in the side wall of the water pipe 15 wrapping the filter layer 17, hard filter materials 19 are filled in the clay layer 12, the medium sand layer 8, the fine sand layer 11, the sticky silt layer 10 and the fine clay layer 9 between the recharging well 4 and the relay recharging well 5 and the water pipe 15, and fine clay is filled in the fine clay layer 9 close to the ground.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. A construction method for recharging fresh water in rivers to underground reservoirs comprises the following steps: it comprises the following steps:
(1) the method comprises the following steps of taking a stratum funnel area with low underground water level or depleted underground water as an underground reservoir (7), selecting a nearest fresh water river with high terrain near the underground reservoir (7) as a water taking point (1), exploring a stratum between the water taking point (1) and the underground reservoir (7), and selecting a stratum (8) with better water permeability in the stratum between the water taking point (1) and the underground reservoir (7) as an underground water channel or an underground river (14);
(2) building a dam (2) at the water taking point (1), wherein the dam (2) intercepts the river at the water taking point (1) into an upstream river and a downstream river;
(3) building a reservoir (3) on the bank side close to the dam (2), introducing river water at the upstream of the river into the reservoir (3), and treating the river water in the reservoir (3) to enable the river water to meet the reinjection water standard;
(4) a plurality of recharging wells (4) are drilled on an underground water channel or an underground river (14) close to the reservoir (3), and the recharging wells (4) are drilled at least into a clay layer (12) below the permeable layer (8);
(5) two rows of water plugging walls (6) are built on an underground water channel or an underground river (14) between the reservoir (3) and the underground reservoir (7) through connected water plugging piles (16), the recharge wells (4) are enclosed in the two rows of water plugging walls (6), and the water plugging piles (16) are at least drilled into a clay layer (12) below a stratum (8) with better water permeability;
(6) and river water in the reservoir (3) is introduced into the recharge well (4), and is recharged into the underground reservoir (7) through an underground water channel or an underground river (14) formed by a stratum (8) with better water permeability under the action of the potential energy difference between the recharge well (4) and the underground reservoir (7) and the water head difference in the recharge well (4).
2. The method of claim 1, wherein the method comprises the steps of: between step (5) and step (6) further include:
a plurality of relay recharging wells (5) are drilled in two rows of water blocking walls (6) close to an underground reservoir (7), the relay recharging wells (5) are at least drilled into a clay layer (12) below a stratum (8) with better water permeability, underground water in the relay recharging wells (5) is pumped by a pump, water with the volume of 1/2 is filled into an underground water channel through the recharging wells, the soil layer in the channel is changed into an unsaturated state, and the water flows into the underground reservoir (7) under the action of gravity of the water and the terrain gradient through large pores communicated with the soil.
3. The method of claim 2, wherein the method comprises the steps of: the underground water reservoir (7) is formed by the descent of underground water caused by nature or man-made factors and has the function of storing water.
4. The method according to claim 3, wherein the method comprises the steps of: the stratum (8) with better water permeability is a medium sand layer, a coarse sand layer, a gravel layer or an artificial water permeable layer of the stratum.
5. The method according to claim 4, wherein the method comprises the steps of: the underground water passage (14) is formed by pressing water from the recharge well (4) into the underground reservoir (7) by the pressure of water level pressure difference.
6. The method according to claim 5, wherein the method comprises the steps of: the underground river (14) is a water channel formed by water flowing from the recharge well (4) to the underground reservoir (7) by self gravity and terrain slope.
7. The method as claimed in claim 6, wherein the method comprises the steps of: the river fresh water naturally flows into the recharge well (4) without power, the water surface in the recharge well (4) is kept to a certain height throughout the year, and the fresh water is naturally pressed into the underground reservoir (7) through the water head difference from the water surface of the recharge well (4) to the water surface of the underground reservoir (7).
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| CN202010634616.XA CN111809689B (en) | 2020-07-02 | 2020-07-02 | Construction method for recharging fresh water in river to underground reservoir |
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| CN202010634616.XA CN111809689B (en) | 2020-07-02 | 2020-07-02 | Construction method for recharging fresh water in river to underground reservoir |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086569A (en) * | 1992-10-31 | 1994-05-11 | 合肥工业大学 | Surface water and underground water transform new technology mutually |
| CN103215937A (en) * | 2013-02-28 | 2013-07-24 | 中国地质大学（武汉） | Multilayer aquifer structure-based rainwater recharging underwater system |
| CN103306236A (en) * | 2013-06-28 | 2013-09-18 | 梁新 | Method for constructing underground reservoir in ancient gully of ancient underground river channel |
| CN103556646A (en) * | 2013-09-29 | 2014-02-05 | 河北钢铁集团矿业有限公司 | Method for forming water shutoff walls in sand and gravel layer |
| CN105507338A (en) * | 2015-12-24 | 2016-04-20 | 李金良 | Campshed and inserted piled slab combined supporting water-plugging continuous wall forming construction method |
| MX347027B (en) * | 2015-10-21 | 2017-04-10 | De Jesús Álvarez Sánchez Miguel | Process for the construction of underground dams for the containment of subterranean water, and its subsequent use. |
| NL2020137B1 (en) * | 2017-12-20 | 2019-06-26 | Drainblock B V | Groundwater recharge system |
| CN110735468A (en) * | 2019-11-21 | 2020-01-31 | 山东省水利科学研究院 | underground water cross-flow supply recharging system combined with irrigation channels and irrigation wells |
-
2020
- 2020-07-02 CN CN202010634616.XA patent/CN111809689B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1086569A (en) * | 1992-10-31 | 1994-05-11 | 合肥工业大学 | Surface water and underground water transform new technology mutually |
| CN103215937A (en) * | 2013-02-28 | 2013-07-24 | 中国地质大学（武汉） | Multilayer aquifer structure-based rainwater recharging underwater system |
| CN103306236A (en) * | 2013-06-28 | 2013-09-18 | 梁新 | Method for constructing underground reservoir in ancient gully of ancient underground river channel |
| CN103556646A (en) * | 2013-09-29 | 2014-02-05 | 河北钢铁集团矿业有限公司 | Method for forming water shutoff walls in sand and gravel layer |
| MX347027B (en) * | 2015-10-21 | 2017-04-10 | De Jesús Álvarez Sánchez Miguel | Process for the construction of underground dams for the containment of subterranean water, and its subsequent use. |
| CN105507338A (en) * | 2015-12-24 | 2016-04-20 | 李金良 | Campshed and inserted piled slab combined supporting water-plugging continuous wall forming construction method |
| NL2020137B1 (en) * | 2017-12-20 | 2019-06-26 | Drainblock B V | Groundwater recharge system |
| CN110735468A (en) * | 2019-11-21 | 2020-01-31 | 山东省水利科学研究院 | underground water cross-flow supply recharging system combined with irrigation channels and irrigation wells |
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