CN218813572U - System for realizing water conservation and reducing paddy field non-point source pollution based on impounding diving - Google Patents

Abstract

The utility model relates to a system based on it realizes paddy field water conservation and reduces paddy field non-point source and pollute to block retaining dive, its characteristics are: it is adjusted the structure by groundwater block structure and groundwater floodgate and constitutes, groundwater block the structure be located drainage channel terminal and groundwater to the low reaches terminal, bury underground in the earth's surface below for the interception with hold and receive dive, at least one groundwater floodgate is adjusted the structure and is arranged in groundwater blocks in the structure, the groundwater floodgate is adjusted the upper end of structure and is located above the earth's surface, does benefit to the operation, the groundwater floodgate is adjusted the lower extreme of structure and is located below the earth's surface, and the water inlet feeds through with the play water end of groundwater block structure, and the delivery port and the drainage channel intercommunication of groundwater floodgate adjustment structure for adjust ground water level, prevent that secondary salinization from producing. The underground barrier can be formed to effectively retain and utilize originally lost underground return water, so that the purpose of retaining or draining underground diving is achieved, and the utilization rate of irrigation water is improved.

Description

System for realizing water saving and reducing paddy field non-point source pollution based on impounding diving

Technical Field

The utility model relates to an agricultural water conservation and non-point source pollution prevention and control technical field are a system based on block and hold dive and realize that the paddy field is water-saving and reduce paddy field non-point source and pollute.

Background

Agricultural water is the first water user in China, a paddy field is the farmland with the highest water consumption in agricultural irrigation, and the average utilization rate of irrigation water is only about 50%, so that the development of water-saving irrigation of the paddy field has irreparable importance and urgency.

At present, water saving of paddy fields at home and abroad is basically limited to surface engineering, mainly aims at preventing seepage of canal systems, and achieves the purposes of reducing seepage of water delivery canals and reducing water loss by lining irrigation canals at all levels. At present, impermeable lining of irrigation channels of large and medium irrigation areas in China is basically realized, the utilization rate of canal system water is greatly improved, but the utilization rate of field water is still low and is difficult to improve, a large amount of water is returned every year, and the water lost through a fourth system diving mode accounts for more than 70%. When water is lost, fertilizer applied to farmlands is lost to a drainage channel along with the latent water under the condition that the fertilizer efficiency is not fully exerted, so that the loss of the fertilizer and the non-point source pollution of a downstream drainage area are caused. How to further utilize the part of water, reduce water loss and non-point source pollution is an urgent problem to be solved in the future water-saving irrigation technology.

Disclosure of Invention

The utility model discloses the technical problem that will solve is: the system for saving water and reducing paddy field non-point source pollution based on the impoundment diving is characterized in that an underground water impoundment system and an underground water gate adjusting system are built, so that originally lost underground return water is effectively impounded and utilized, and the utilization rate of irrigation water is improved. Meanwhile, according to the change conditions of the hydrodynamic field and the water chemical field in the irrigation period, the underground sluice is closed and opened timely, the underground high water level is regulated and controlled through the underground sluice regulating system, the capillary rise of the salt and alkali which possibly occur is reduced, and the secondary salinization of the paddy field is avoided.

The utility model provides a technical problem's scheme is: the utility model provides a system for realize paddy field water conservation and reduce paddy field non-point source pollution based on block and hold dive, characterized by: it is adjusted the structure by groundwater block structure and groundwater floodgate and constitutes, groundwater block the structure be located drainage channel terminal and groundwater to the low reaches terminal, bury underground in the earth's surface below for the interception with hold and receive dive, at least one groundwater floodgate is adjusted the structure and is arranged in groundwater blocks in the structure, the groundwater floodgate is adjusted the upper end of structure and is located above the earth's surface, does benefit to the operation, the groundwater floodgate is adjusted the lower extreme of structure and is located below the earth's surface, and the water inlet feeds through with the play water end of groundwater block structure, and the delivery port and the drainage channel intercommunication of groundwater floodgate adjustment structure for adjust ground water level, prevent that secondary salinization from producing.

Groundwater blocks structure includes catch basin, waterproof layer and secret collector pipe, the catch basin is arranged in drainage channel end and downstream end that groundwater flows in the catch basin, the below setting of earth's surface the waterproof layer, secret collector pipe arrange in the below earth's surface the upper reaches of waterproof layer, secret collector pipe lay along the catch basin, and the upper portion pipe wall sets up the water collecting hole for take in dive.

The waterproof layer of the groundwater containment structure is a water impermeable material including, but not limited to, a geomembrane.

The underground water collecting pipe of the underground water storage structure is made of plastic pipes including but not limited to PVC, PE and UPVC corrugated pipes, and needs to have certain strength.

The periphery of the underground water collecting pipe of the underground water retaining structure is coated with a filter layer for filtering diving and preventing silt from entering the underground water collecting pipe.

The filtering layer of the underground water collecting pipe of the underground water storage structure includes, but is not limited to, non-woven fabric.

The underground sluice adjusts the structure and includes gate well, drain pipe and sluice, the gate well is arranged in groundwater and is blocked the underground water collecting pipe department that holds the structure, and the bottom of gate well is located underground water collecting pipe below, top and earth's surface and flushes, and the apopore and the gate well intercommunication of underground water collecting pipe, the drain pipe is arranged in between gate well and the drainage channel, buries underground below the earth's surface, and the drain pipe water inlet is located gate well and communicates, and the delivery port and the drainage channel intercommunication of drain pipe, the sluice is arranged in the gate well, and the operation end of sluice is located the outer top of gate well, manger plate end is located drain pipe water inlet department, and the manger plate end of sluice can shutoff or open the drain pipe water inlet.

The gate well top that the underground sluice adjusted the structure sets up the well lid, the inner wall sets up the sluice cat ladder.

The drain pipe of the underground water gate adjusting structure comprises but is not limited to a reinforced concrete pipe, and the strength requirement needs to be met.

The principle of the utility model is that:

1, an underground barrier is formed by a water intercepting tank and a waterproof layer of an underground water retaining structure to intercept underground diving;

2, arranging a porous underground water collecting pipe at the upstream of the waterproof layer along the water intercepting groove, and collecting the diving water and guiding the diving water to the underground sluice adjusting structures at two sides;

and 3, closing and opening the sluice of the underground sluice adjusting structure at proper time according to the change conditions of the hydrodynamic field and the water chemical field, and blocking or draining underground diving to prevent secondary salinization by controlling the underground water level.

The utility model has the advantages that: its groundwater blocks the structure and can constitute the secret barrier and intercept the secret dive to be used for compiling the dive and guide to the secret sluice regulation structure of both sides through porous secret collector pipe, can block effectively and utilize the groundwater that originally runs off, through blocking the dive that utilizes originally runs off, and adjust the underground water level of structure control through the secret sluice, the drainage time of groundwater has been prolonged, make the chemical fertilizer in the groundwater further full play fertilizer efficiency, not only reached and blocked or excrete the purpose of groundwater, and improved the irrigation water utilization ratio, chemical fertilizer loss has still been avoided, the area source pollution in low reaches take off district has been reduced. Meanwhile, according to the change conditions of a hydrodynamic field and a water chemical field in the irrigation period, the water gate of the underground water gate adjusting structure is closed and opened timely through the underground water gate adjusting structure, the high water level of underground congestion can be adjusted and controlled, the capillary rise of possible salt and alkali is reduced, and the secondary salinization of a paddy field is avoided.

The device has the advantages of simple structure, reliable performance and obvious effect.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

FIG. 3 is an enlarged view of a portion II of FIG. 1;

FIG. 4 is an enlarged partial view of FIG. 1;

fig. 5 is a schematic cross-sectional view of the present invention;

FIG. 6 isbase:Sub>A schematic sectional view taken along line A-A of FIG. 5;

fig. 7 is a standard sectional view of the groundwater impoundment structure of the present invention.

In the figure: 1 underground water collecting pipe, 2 underground sluice regulation structures, 3 drain pipes, 4 drainage channels, 5 irrigation channels, 6 farmland, 7 gate wells, 8 cat ladders, 9 well lids, 10 sluice, 11 fender water ends, 12 waterproof layers, 13 water collecting holes, 14 non-woven fabrics.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-7, embodiment 1, this embodiment is a system for realizing paddy field water conservation and reducing paddy field non-point source pollution based on retaining dive, it sets up 5 sides in irrigation canal, 4 terminal and the downstream end of groundwater flow direction in farmland 6, farmland 6 is the paddy field, and it comprises groundwater retaining structure and groundwater gate adjustment structure 2, groundwater retaining structure is located 4 terminal and groundwater flow direction downstream end of drainage canal, buries underground for intercept and hold the dive, two groundwater gate adjustment structure arranges in groundwater retaining structure, the upper end of groundwater gate adjustment structure 2 is located above the earth's surface, does benefit to the operation, groundwater gate adjustment structure 2's lower extreme is located below the earth's surface and the water inlet communicates with groundwater retaining structure's play water end, and groundwater gate adjustment structure 2's delivery port communicates with drainage canal 4 for adjust groundwater level, prevent secondary salinization and produce.

Groundwater is blocked structure and is included catch basin, waterproof layer 12 and underground collector pipe 1, 4 terminal and the downstream end that groundwater flows to of drainage channel are arranged in to the catch basin in, the following setting of earth's surface waterproof layer 12, waterproof layer 12 is impervious material's geomembrane, underground collector pipe 1 arrange in the earth's surface below waterproof layer 12's upper reaches, underground collector pipe 1 is laid along the catch basin and the upper portion pipe wall sets up water collecting hole 13 for take up dive. Underground collector pipe 1 is the plastics tubular product that has certain intensity, coats non-woven fabrics 14 as the filter layer in underground collector pipe 1 periphery for filter dive, prevent that silt from getting into underground collector pipe 1.

Underground sluice is adjusted structure 2 and is included gate well 7, drain pipe 3 and sluice 10, underground water collecting pipe 1 department that underground water blocked the structure is arranged in to gate well 7, and the bottom of gate well 7 is located 1 below of underground water collecting pipe, top and earth's surface and flushes, 7 tops of gate well of underground sluice is adjusted structure 2 set up well lid 9, inner wall and sets up cat ladder 8. The apopore and the gate shaft 7 intercommunication of underground collector pipe 1, drain pipe 3 is the reinforced concrete pipe that satisfies the strength requirement, drain pipe 3 arranges in between gate shaft 7 and drainage channel 4, buries underground in the earth's surface, and drain pipe 3 water inlet is located gate shaft 7 and communicates, and the delivery port and the drainage channel 4 intercommunication of drain pipe 3, sluice 10 arranges in gate shaft 7, and the operation end of sluice 10 is located the top outside gate shaft 7, and manger plate end 11 is located drain pipe 3 water inlet department, and manger plate end 11 of sluice 10 can the shutoff or open the 3 water inlets of drain pipe.

The present embodiment is manufactured using a conventional technique.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (9)

1. The utility model provides a system for realize paddy field water conservation and reduce paddy field non-point source pollution based on block and hold dive, characterized by: it is adjusted the structure by groundwater block structure and groundwater floodgate and constitutes, groundwater block the structure be located drainage channel terminal and groundwater to the low reaches terminal, bury underground in the earth's surface below for the interception with hold and receive dive, at least one groundwater floodgate is adjusted the structure and is arranged in groundwater blocks in the structure, the groundwater floodgate is adjusted the upper end of structure and is located above the earth's surface, does benefit to the operation, the groundwater floodgate is adjusted the lower extreme of structure and is located below the earth's surface, and the water inlet feeds through with the play water end of groundwater block structure, and the delivery port and the drainage channel intercommunication of groundwater floodgate adjustment structure for adjust ground water level, prevent that secondary salinization from producing.

2. The system for saving water and reducing non-point source pollution of paddy field based on impoundment diving as claimed in claim 1, characterized in that: groundwater blocks structure includes catch basin, waterproof layer and secret collector pipe, the catch basin is arranged in drainage channel end and downstream end that groundwater flows in the catch basin, the below setting of earth's surface the waterproof layer, secret collector pipe arrange in the below earth's surface the upper reaches of waterproof layer, secret collector pipe lay along the catch basin, and the upper portion pipe wall sets up the water collecting hole for take in dive.

3. The system for saving water and reducing non-point source pollution of paddy field based on impoundment diving as claimed in claim 2, characterized in that: the waterproof layer is a waterproof material, including but not limited to geomembrane.

4. The system for saving water and reducing non-point source pollution of paddy field based on impoundment diving as claimed in claim 2, characterized in that: the underground water collecting pipe is made of plastic pipes of PVC, PE and UPVC corrugated pipes.

5. The system for saving water and reducing non-point source pollution of paddy field based on impoundment diving as claimed in claim 2, characterized in that: the periphery of the underground water collecting pipe is coated with a filter layer for filtering diving and preventing silt from entering the underground water collecting pipe.

6. The system for saving water and reducing non-point source pollution of the paddy field based on the impoundment diving as claimed in claim 5, is characterized in that: the filter layer includes, but is not limited to, a nonwoven fabric.

7. The system for saving water and reducing non-point source pollution in a paddy field based on impounding diving as claimed in claim 1, characterized in that: the underground sluice adjusts the structure and includes gate well, drain pipe and sluice, the gate well is arranged in groundwater and is blocked the underground water collecting pipe department that holds the structure, and the bottom of gate well is located underground water collecting pipe below, top and earth's surface and flushes, and the apopore and the gate well intercommunication of underground water collecting pipe, the drain pipe is arranged in between gate well and the drainage channel, buries underground below the earth's surface, and the drain pipe water inlet is located gate well and communicates, and the delivery port and the drainage channel intercommunication of drain pipe, the sluice is arranged in the gate well, and the operation end of sluice is located the outer top of gate well, manger plate end is located drain pipe water inlet department, and the manger plate end of sluice can shutoff or open the drain pipe water inlet.

8. The system for saving water and reducing non-point source pollution in a paddy field based on impoundment diving as claimed in claim 7, characterized in that: the gate shaft top sets up the well lid, the inner wall sets up the sluice cat ladder.

9. The system for saving water and reducing non-point source pollution of paddy field based on impoundment diving as claimed in claim 7, characterized in that: the drain pipe includes, but is not limited to, a reinforced concrete pipe.

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