CN211621504U - Saline-alkali region water resource collecting and utilizing system containing seepage well and micro-irrigation - Google Patents

Saline-alkali region water resource collecting and utilizing system containing seepage well and micro-irrigation Download PDF

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Publication number
CN211621504U
CN211621504U CN201920610450.0U CN201920610450U CN211621504U CN 211621504 U CN211621504 U CN 211621504U CN 201920610450 U CN201920610450 U CN 201920610450U CN 211621504 U CN211621504 U CN 211621504U
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layer
water
well
saline
soil
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Inventor
周国华
王志刚
李忠锋
张勇
任娜
卢立波
刘玮
马莎莎
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Tianjin Shengtaicheng Municipal Landscape Co ltd
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Tianjin Shengtaicheng Municipal Landscape Co ltd
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Abstract

The utility model discloses a system for collecting and utilizing water resources in saline-alkali regions containing seepage wells and micro-irrigation, which comprises a soil body, an air vent and a water storage well; the soil body comprises a planting soil layer, a permeable film layer, a water storage layer, a waterproof layer and a saline-alkali soil layer which are sequentially arranged from top to bottom; the air vent extends downwards from a planting soil layer of the soil body to the permeable film layer; the planting soil layer is internally provided with a seepage well, the seepage well extends downwards from the upper surface of the planting soil layer by 50-120cm and has a distance of 10-20cm to the water permeable membrane layer, sand filter and/or stone chips are contained in the seepage well, and the lower part of the outer wall of the seepage well is provided with an inclined downward seepage pipe leading to the planting soil layer; the lower surface of the water storage layer is provided with a groove protruding into the saline-alkali soil layer, and a concealed pipe is arranged in the groove; the slope direction of the concealed pipe is connected and communicated with a water storage well; the outlet end of the water taking pipe is a micro spray pipe; the utility model discloses can effectively collect and utilize and permeate the intraformational rainwater of planting soil after the rainfall to can not lead to saline and alkaline soil layer to return salt to planting soil layer.

Description

Saline-alkali region water resource collecting and utilizing system containing seepage well and micro-irrigation
Technical Field
The utility model belongs to saline and alkaline land water resource processing field especially relates to a contain infiltration well and slight irrigation salt alkali region water resource collection utilization system.
Background
The water resource occupation of the per capita in China is only 30% of the world level, most regions are lack of water or severely lack of water, and in recent years, along with the further deepening of the urbanization process, the demand of the water resource is more and more large, and how to efficiently develop and utilize the water resource becomes a common challenge facing the social needs.
In order to explore the construction paths of sponge cities under different natural environments and urban forms, the country develops two sets of 30 sponge city pilot constructions, the sponge city construction is actively developed nationwide at present, and different rainwater collection, purification and utilization technologies and products are adopted for different underlying surfaces. Rainwater is a very precious fresh water resource, and is particularly difficult to collect and utilize in coastal saline-alkali lands which are seriously lack of water. Due to water shortage of saline-alkali soil, the salt concentration in the soil exceeds the bearing capacity of plants, and salt damage is formed. The salt comes with the water and goes with the water, so sufficient fresh water resource supply must be ensured, and the saline-alkali land resource can be continuously utilized.
The total area of coastal saline-alkali soil in China reaches 500 × 104hm2,. With the development of economy and industry in the years, saline-alkali areas become new sites for economic development, and in order to meet the requirements of construction and development, the method for treating saline-alkali soil by 'stone chip leaching layers' and 'concealed pipe salt discharge' is widely applied. The method for treating the saline-alkali soil by the 'stone chip sprinkling layer' and the 'concealed pipe salt elimination' comprises the steps of changing the soil of the saline-alkali soil into good or replacing the soil with planting soil, laying stone chips below the planting soil to isolate the saline-alkali soil, preventing capillary water with high salt from entering the good soil, arranging a drainage blind ditch below the stone chip layer, and timely draining capillary high salt water and water drained from the good soil into a municipal pipe network. Meanwhile, in order to prevent the water level of the underground water from exceeding the drenching layer to cause the failure of the drenching layer, the elevation of the green land is raised by earthwork, the elevation is generally at least 1.5 meters higher than the highest value of the underground water level, the high-salinity underground water is kept away, the influence of the high-salinity underground water is reduced, the improved soil is ensured not to be salinized, the greening can be normally carried out, and various plants are planted. However, the existing method for treating saline-alkali soil by adding 'hidden pipe salt removal' to the 'stone chip leaching layer' has the defects that: rainwater after rainfall permeates into soil, enters a salt-alkali layer through a stone chip layer to be lost, or is directly discharged into a municipal drainage pipe network, so that the rainwater cannot be effectively utilized, and meanwhile, in the fertilization process, a large amount of nutrient substances such as nitrogen, phosphorus, potassium and the like are discharged into a municipal rainwater system, and eutrophication of a downstream water body is also caused; the surface runoff rainwater which cannot seep in time when raining flows into low-lying areas such as peripheral roads, the drainage pressure and waterlogging risk of the roads are increased, and meanwhile, the green soil scours the road surface along with the runoff, so that the problem of runoff pollution such as mud left after the road rains is caused; the greening earthwork amount is large and uneconomical.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is to provide a system for collecting and utilizing the water resource in the saline-alkali area containing the seepage well and the micro irrigation; the system can effectively collect and utilize rainwater permeating into the planting soil layer after rainfall, and can not cause salt return of the saline-alkali soil layer to the planting soil layer; in addition, the utility model can also reduce the greening elevation of the saline-alkali soil, reduce the earth volume and reduce the runoff pollution to the peripheral facilities such as roads and the like; in the water shortage area of the saline-alkali soil, every drop of water which permeates into the soil can not be drained.
For solving the first technical problem, the utility model adopts the following technical scheme:
a saline-alkali region water resource collecting and utilizing system containing an infiltration well and a micro-irrigation comprises a soil body, an air vent and a water storage well; the soil body comprises a planting soil layer, a permeable film layer, a water storage layer, a waterproof layer and a saline-alkali soil layer which are sequentially arranged from top to bottom; the air vent extends downwards from a planting soil layer of the soil body to the permeable film layer; the planting soil layer is internally provided with a seepage well, the seepage well extends downwards from the upper surface of the planting soil layer by 50-120cm and has a distance of 10-20cm to the water permeable membrane layer, sand filter and/or stone chips are contained in the seepage well, and the lower part of the outer wall of the seepage well is provided with an inclined downward seepage pipe leading to the planting soil layer; the lower surface of the water storage layer is provided with a groove protruding into the saline-alkali soil layer, and a concealed pipe is arranged in the groove; the slope direction of the concealed pipe is connected and communicated with a water storage well; the water storage wells are arranged in the soil body at intervals, the depth of the water storage wells extends to the lower part of the groove from top to bottom, and the well wall of the water storage well is of a watertight structure; adopting a lateral waterproof layer at the joint of the system and the surrounding building or structure for reverse wrapping; the bottom of the water storage well is provided with a water taking pit, a water taking pipe is arranged in the water storage well, a water inlet of the water taking pipe is provided with a water suction pump and extends into the water taking pit all the time, the outlet end of the water taking pipe is horizontally arranged at a position 0-5cm above the surface of the planting soil layer, the outlet end of the water taking pipe is a micro spray pipe, and a ball float valve is arranged on the water taking pipe.
Preferably, the thickness of the planting soil layer is 60-140 cm.
Preferably, the water permeable film layer is a water permeable nonwoven fabric.
Preferably, the aquifer is large-pore material such as 18-60cm thick stone chips or broken stones or pp modules.
Preferably, the waterproof layer comprises an upper waterproof geotextile layer, a waterproof membrane layer and a lower waterproof geotextile layer, and extends to the bottom of the well at the water storage well.
Preferably, the concealed pipes are arranged at intervals of 6-8 meters; the concealed pipe is a PVC (polyvinyl chloride) seepage pipe, 2% of the concealed pipe is communicated with the water storage well in the slope direction, and the concealed pipe can be coated with permeable geotextile.
Preferably, when the area of the green land is very large, the system for collecting and utilizing the water resources of the saline-alkali region containing the seepage well and the micro-irrigation can be divided into a plurality of catchment areas for the convenience of management and control, and different catchment areas can be separated by reverse wrapping with waterproof geotextile; the height of the turn-up is typically more than 50cm above the aquifer.
Any range recited in the present invention includes any numerical value between the endpoints and any sub-range comprised of any numerical value between the endpoints or any numerical value between the endpoints.
Unless otherwise specified, the raw materials of the present invention can be purchased commercially, and the equipment used in the present invention can be implemented by conventional equipment in the related art or by referring to the prior art in the related art.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model relates to a saline-alkali region water resource collection and utilization system containing seepage wells and micro-irrigation, which can effectively collect and utilize rainwater permeating into a planting soil layer after rainfall, and can not cause the saline-alkali soil layer to return salt to the planting soil layer, and the collected rainwater can irrigate the planting soil layer again; furthermore, the utility model discloses can also make saline and alkaline land afforestation elevation reduce, reduce the earthwork volume, reduce the runoff pollution to peripheral facilities such as roads simultaneously, in saline and alkaline land water shortage area, can not arrange each drip that permeates into soil.
Drawings
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is the schematic view of the cross-sectional structure of the soil body of the present invention
Detailed Description
In order to illustrate the invention more clearly, the invention is further described below with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-2, the present invention relates to a system for collecting and utilizing water resources in saline-alkali areas containing percolation wells and micro-irrigation, which comprises a soil body 100, an air vent 300 and a water storage well 200;
the soil body 100 comprises a planting soil layer 1, a permeable membrane layer 2, a water storage layer 3, a waterproof layer 4 and a saline-alkali soil layer 5 which are arranged in sequence from top to bottom;
the air vent 300 extends downwards from a planting soil layer 1 of the soil body to the permeable membrane layer 2; when more water is stored in the water storage well 200 and the air is not conveniently exhausted any more, water resources on the surface of the soil body 100 cannot penetrate downwards any more, and the air vent 300 is needed for exhausting air; the vent hole 300 in the utility model can be directly punched in the planting soil layer 1 or inserted into the planting soil layer by a pipeline with vent holes;
the planting soil layer 1 is internally provided with a seepage well 500, the seepage well 500 extends downwards from the upper surface of the planting soil layer by 50-120cm and has a distance of 10-20cm to the water permeable membrane layer 2, sand filter and/or stone chips are contained in the seepage well 500, and the lower part of the outer wall of the seepage well 500 is provided with an oblique downward seepage pipe 501 leading to the planting soil layer 1;
the lower surface of the water storage layer 3 is provided with a groove 6 which protrudes into the saline-alkali soil layer 5, and a hidden pipe 7 is arranged in the groove; the hidden pipe 7 is connected and communicated with a water storage well 200 in the slope direction;
the water storage wells 200 are arranged in the soil body 100 at intervals, the depth of the water storage wells extends to at least 1m below the groove 6 from top to bottom, and the well walls of the water storage wells 200 are of watertight structures;
a water taking pit 9 is arranged at the bottom of the water storage well 200, a water taking pipe 8 is arranged in the water storage well 200, a water inlet of the water taking pipe 8 is provided with a water suction pump and extends into the water taking pit 9, an outlet end of the water taking pipe is horizontally arranged 20-50cm below the surface of the planting soil layer, an outlet end of the water taking pipe 8 is a micro spray pipe 81, and a ball float valve 82 is arranged on the water taking pipe; when the water level in the water storage well 200 rises, the float valve 82 is opened, and the water pump is started, so that the micro-spray pipe 81 at the outlet of the water intake pipe starts to water the surface of the planting soil layer; when the water level is too low, the ball float valve 82 is closed and the pump stops running.
According to a preferred embodiment of the present invention, the planting soil layer 1 has a thickness of 60-140 cm.
According to the preferred embodiment of the present invention, the permeable membrane layer 2 is a permeable nonwoven fabric.
According to a preferred embodiment of the invention, the aquifer 3 is a large-pore material such as rock chips or gravel or pp modules with a thickness of 18-60 cm.
According to a preferred embodiment of the present invention, the waterproof layer 4 comprises an upper waterproof geotextile layer, a waterproof membrane layer and a lower waterproof geotextile layer, and extends to the bottom of the well at the water storage well 200; the waterproof layer 4 is arranged, so that rainwater can be guaranteed to be drained into the water storage well 200 through the concealed pipe 7 after penetrating into the water storage layer 3, and the rainwater cannot directly penetrate into a saline-alkali soil layer below to be lost; the saline water in the saline-alkali soil layer 5 can be ensured not to reversely permeate into the water storage layer 3, even reversely permeate into the planting soil layer 1, so that the planting soil layer 1 is damaged; the waterproof layer 4 also isolates the mutual water seepage problem between the water storage layer 3 and the saline-alkali soil layer 5 at the water storage well. In addition, the upper waterproof geotextile layer is also helpful for enhancing the toughness and strength of the waterproof layer and preventing the waterproof membrane layer from being damaged by broken stones and the like on the upper layer; also, the lower waterproof geotechnical layer helps to prevent damage to the waterproofing membrane layer from the lower saline-alkali soil layer 5.
According to a preferred embodiment of the present invention, the concealed pipes 7 are arranged at intervals of 6-8 meters; the concealed pipe 7 is a PVC seepage pipe and is communicated with the water storage well 200 in a 2% slope direction; in order to prevent the blind pipe from being blocked by the seepage hole, the blind pipe is coated with a permeable geotextile; the utility model discloses can open out the narrow shape infiltration hole of multirow on the hidden pipe 7 circumference, can be through controlling the aperture ratio, satisfy different ring rigidity and permeability requirement; the underground pipe 7 is coated with the permeable geotextile, so that the water permeating effect can be achieved, and the blockage caused by the silt entering the underground pipe 7 can be avoided.
According to the utility model discloses preferred embodiment, collect at this saline and alkaline land area water resource that contains infiltration well and slight irrigation and utilize handing-over department such as system and peripheral building or structures, for preventing rivers and to the influence of infiltration to other structures etc., adopt side direction waterproof layer 400 turn-ups to preserve water and prevent seepage at this system border.
According to the preferred embodiment of the present invention, when the green land area is very large, the system for collecting and utilizing water resources in saline-alkali regions containing percolation wells and micro-irrigation can be divided into a plurality of catchment areas for convenient management and control, and the different catchment areas can be separated by reverse wrapping with waterproof geotextile; the height of the turn-up is typically more than 50cm above the aquifer (not shown).
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Not all embodiments are exhaustive. All obvious changes or variations led out by the technical scheme of the utility model are still in the protection scope of the utility model.

Claims (7)

1. Saline-alkali region water resource collection and utilization system who contains seepage well and slight irrigation, its characterized in that: comprises a soil body, a vent hole and a water storage well; the soil body comprises a planting soil layer, a permeable film layer, a water storage layer, a waterproof layer and a saline-alkali soil layer which are sequentially arranged from top to bottom; the air vent extends downwards from a planting soil layer of the soil body to the permeable film layer; the planting soil layer is internally provided with a seepage well, the seepage well extends downwards from the upper surface of the planting soil layer by 50-120cm and has a distance of 10-20cm to the water permeable membrane layer, sand filter and/or stone chips are contained in the seepage well, and the lower part of the outer wall of the seepage well is provided with an inclined downward seepage pipe leading to the planting soil layer; the lower surface of the water storage layer is provided with a groove protruding into the saline-alkali soil layer, and a concealed pipe is arranged in the groove; the slope direction of the concealed pipe is connected and communicated with a water storage well; the water storage wells are arranged in the soil body at intervals, the depth of the water storage wells extends to the lower part of the groove from top to bottom, and the well wall of the water storage well is of a watertight structure; adopting a lateral waterproof layer at the joint of the system and the surrounding building or structure for reverse wrapping; the bottom of the water storage well is provided with a water taking pit, a water taking pipe is arranged in the water storage well, a water inlet of the water taking pipe is provided with a water suction pump and extends into the water taking pit all the time, the outlet end of the water taking pipe is horizontally arranged at a position 0-5cm above the surface of the planting soil layer, the outlet end of the water taking pipe is a micro spray pipe, and a ball float valve is arranged on the water taking pipe.
2. The system for collecting and utilizing the water resources of the saline-alkali soil containing the seepage well and the micro-irrigation as claimed in claim 1, wherein: the thickness of the planting soil layer is 60-140 cm.
3. The system for collecting and utilizing the water resources of the saline-alkali soil containing the seepage well and the micro-irrigation as claimed in claim 1, wherein: the permeable film layer is a permeable non-woven fabric.
4. The system for collecting and utilizing the water resources of the saline-alkali soil containing the seepage well and the micro-irrigation as claimed in claim 1, wherein: the aquifer is 18-60cm thick stone chips or broken stones or pp modules.
5. The system for collecting and utilizing the water resources of the saline-alkali soil containing the seepage well and the micro-irrigation as claimed in claim 1, wherein: the waterproof layer comprises an upper waterproof geotextile layer, a waterproof membrane layer and a lower waterproof geotextile layer, and extends to the bottom of the well at the water storage well.
6. The system for collecting and utilizing the water resources of the saline-alkali soil containing the seepage well and the micro-irrigation as claimed in claim 1, wherein: the concealed pipes are arranged at intervals of 6-8 meters; the concealed pipe is a PVC (polyvinyl chloride) seepage pipe, 2% of the concealed pipe is communicated with the water storage well in the slope direction, and the concealed pipe can be coated with permeable geotextile.
7. The system for collecting and utilizing the water resources of the saline-alkali soil containing the seepage well and the micro-irrigation as claimed in claim 1, wherein: the system for collecting and utilizing the water resources of the saline-alkali region containing the seepage well and the micro-irrigation is divided into a plurality of catchment areas, and different catchment areas can be separated by reverse wrapping with waterproof geotextile; the height of the turn-up is typically more than 50cm above the aquifer.
CN201920610450.0U 2019-04-26 2019-04-26 Saline-alkali region water resource collecting and utilizing system containing seepage well and micro-irrigation Active CN211621504U (en)

Priority Applications (1)

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CN201920610450.0U CN211621504U (en) 2019-04-26 2019-04-26 Saline-alkali region water resource collecting and utilizing system containing seepage well and micro-irrigation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920610450.0U CN211621504U (en) 2019-04-26 2019-04-26 Saline-alkali region water resource collecting and utilizing system containing seepage well and micro-irrigation

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CN211621504U true CN211621504U (en) 2020-10-02

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