CN210797471U - Saline-alkali region water resource regulation, storage and utilization system containing biological retention tank - Google Patents
Saline-alkali region water resource regulation, storage and utilization system containing biological retention tank Download PDFInfo
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- CN210797471U CN210797471U CN201920592657.XU CN201920592657U CN210797471U CN 210797471 U CN210797471 U CN 210797471U CN 201920592657 U CN201920592657 U CN 201920592657U CN 210797471 U CN210797471 U CN 210797471U
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Abstract
The utility model discloses a saline-alkali region water resource regulation and utilization system comprising a biological retention pond, which comprises a soil body 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; a biological detention pond is arranged on the planting soil layer, a pit is formed at the lowest position of the biological detention pond, the depth of the pit extends to the permeable film layer, and a mixture of planting soil and hill sand is filled in the pit; the lower surface of the water storage layer is provided with a groove protruding into the saline-alkali soil layer, and a hidden pipe is arranged in the groove; the water storage wells are arranged in the soil body at intervals; the planting soil layer is connected with the surrounding structures from low to high in the slope direction; pebble ditches are arranged on the upper surface of the joint of the edge of the planting soil layer and the peripheral building. The system can effectively collect rainwater collected into the bioretention pond after rainfall, and can not cause salt return of a saline-alkali soil layer to a planting soil layer; the utility model discloses can also make saline and alkaline land afforestation elevation reduce, reduce the runoff pollution to peripheral facilities such as road simultaneously.
Description
Technical Field
The utility model belongs to saline and alkaline land water resource processing field especially relates to a saline and alkaline region water resource regulation and utilization system that contains biological detention pond.
Background
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 multiplied by 104hm2With 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 sprinkling layer' and 'concealed pipe salt discharge' is widely applied. The method for treating the saline-alkali soil by 'stone chip sprinkling layer' and 'concealed pipe salt elimination' is characterized in that after the soil of the saline-alkali soil is changed into good soil or replaced by planting soil, stone chips are arranged under the planting soil to isolate the saline-alkali soil, high-salinity capillary water is prevented from entering the good soil, and then the stone chip layer is arrangedAnd a drainage blind ditch is arranged below the drainage blind ditch, and the capillary high-salt water and the water drained from the soil are drained into a municipal pipe network in time. 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 saline-alkali region water resource storage and utilization system comprising a biological retention pond; the system can effectively collect rainwater of surface runoff of structures such as roads, squares and the like and planting soil layers after rainfall, can also collect rainwater collected in the biological retention pond after rainfall, and can not cause salt return of a saline-alkali soil layer to the planting soil layer; 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 road simultaneously.
For solving the first technical problem, the utility model adopts the following technical scheme:
a saline-alkali region water resource regulation, storage and utilization system comprising a biological retention pond comprises a soil body 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; a biological detention pond is arranged on the planting soil layer, a pit is formed in the lowest position of the biological detention pond, the depth of the pit extends to the permeable film layer, and a mixture of planting soil and mountain skin sand is filled in the pit; 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 each water storage well extends to the lower part of the groove from top to bottom, the well wall of the water storage well, which is in contact with the water storage layer, is of a seepage pipe structure, and the well walls of other parts are of watertight structures; the planting soil layer is connected with a surrounding structure (such as a surrounding road or a surrounding square) from a low slope direction to a high slope direction; the upper surface of the joint of the planting soil layer and the surrounding building is provided with a pebble ditch, and pebbles are filled in the pebble ditch; the joint of the system and the surrounding building or structure adopts a lateral waterproof layer to reversely wrap.
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 green land area is very large, the saline-alkali region water resource storage and utilization system comprising the bioretention pond can be divided into a plurality of catchment areas for convenient 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.
Preferably, the surface of the bioretention pond is provided with a plant; the planted plants are water-moisture resistant plants; the concave depth of the biological retention tank is 10-35 cm.
Preferably, the bottom of the water storage well is provided with a water taking pit, and a water taking pipe is arranged at the wellhead of the water storage well and extends into the water taking pit.
Preferably, the mass ratio of the planting soil filled in the pit to the mountain skin sand is 1.5-2.5: 1.
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 regulation and utilization system containing a biological retention pond, which can effectively collect rainwater of structures such as road squares and planting soil surface runoff after rainfall, can also collect rainwater permeating into the planting soil layer, can not cause the saline-alkali soil layer to return salt to the planting soil layer, and can collect rainwater as greening irrigation, road sprinkling and the like; 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 road simultaneously.
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 saline-alkali region water resource regulation and storage utilization system including a bioretention pond, which includes a soil body 100 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;
a biological detention pond 8 is arranged on the planting soil layer 1, a pit 9 is formed in the lowest position of the biological detention pond 8, the depth of the pit 9 extends to the permeable film layer 2, and a mixture of planting soil and hill sand is filled in the pit 2;
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 6; 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 the lower part of the groove 6 from top to bottom, the wall of the water storage well 200, which is in contact with the water storage layer 3, is of a seepage pipe structure, and the wall of the other part of the water storage well is of a watertight structure;
the planting soil layer is connected with a surrounding structure 300 (such as a surrounding road or a surrounding square) from a low slope to a high slope; preferably, the slope rate of the drainage slope of the structures such as the surrounding road squares to the planting soil layer is 1% -2%; the upper surface of the joint of the edge of the planting soil layer 1 and a peripheral building (such as a road or square surface) is provided with a pebble ditch 10, and pebbles are filled in the pebble ditch 10; this helps to reduce the impact on the planting soil layer when the surrounding rain water collects.
In order to prevent the influence of water flow and water seepage on other structures and the like, a lateral waterproof layer 400 is adopted for reverse wrapping at the joint of the saline-alkali region water resource storage and utilization system containing the bioretention pond and surrounding buildings or structures.
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 preferred embodiment of the present invention, in the connection between the saline-alkali region water resource regulation and storage utilization system including the bioretention pond and the surrounding buildings or structures, in order to prevent the water flow and the influence of the water seepage on other structures, the system boundary is wrapped with the lateral waterproof layer for water retention and seepage prevention.
According to the preferred embodiment of the present invention, when the green land area is very large, the saline-alkali region water resource storage and utilization system containing the bioretention pond can be divided into a plurality of catchment areas for convenient 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 (not shown).
According to a preferred embodiment of the present invention, the surface of the bioretention pond 8 is provided with plants; the planted plants are water-moisture resistant plants; the concave depth of the biological retention tank 8 is 10-35 cm.
According to the preferred embodiment of the present invention, the bottom of the water storage well 200 is provided with a water intake pit 201, and a water intake pipe 202 is arranged at the mouth of the water storage well 200 and extends into the water intake pit 201, so as to facilitate the extraction of the gathered rainwater; according to the need of automatic drainage of the water storage well 200, an overflow drain pipe 203 may be provided on the well wall, which leads to a municipal drainage system.
According to a preferred embodiment of the present invention, the ratio of the planting soil filled in the pit 9 to the hill sand is 1.5-2.5: 1.
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 (10)
1. Contain salt alkali region water resource regulation and storage utilization system in biological detention pond, its characterized in that: comprises a soil body 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; a biological detention pond is arranged on the planting soil layer, a pit is formed in the lowest position of the biological detention pond, the depth of the pit extends to the permeable film layer, and a mixture of planting soil and mountain skin sand is filled in the pit; 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 each water storage well extends to the lower part of the groove from top to bottom, the well wall of the water storage well, which is in contact with the water storage layer, is of a seepage pipe structure, and the well walls of other parts are of watertight structures; the planting soil layer is connected with a peripheral structure from low to high in a slope direction; the upper surface of the joint of the planting soil layer and the surrounding building is provided with a pebble ditch, and pebbles are filled in the pebble ditch; the joint of the system and the surrounding building or structure adopts a lateral waterproof layer to reversely wrap.
2. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the thickness of the planting soil layer is 60-140 cm.
3. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the permeable film layer is a permeable non-woven fabric.
4. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the aquifer is 18-60cm thick stone chips or broken stones or pp modules.
5. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: 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 regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: 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 regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the saline-alkali region water resource regulation and utilization system containing the biological retention pond is divided into a plurality of catchment areas, and different catchment areas can be separated by reverse wrapping of waterproof geotextile; the height of the turn-up is typically more than 50cm above the aquifer.
8. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the surface of the biological detention pond is provided with a plant; the planted plants are water-moisture resistant plants; the concave depth of the biological retention tank is 10-35 cm.
9. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the bottom of the water storage well is provided with a water taking pit, and a water taking pipe is arranged at the well mouth of the water storage well and extends into the water taking pit.
10. The system for regulating, storing and utilizing the water resources in the saline-alkali region containing the bioretention pond according to claim 1, which is characterized in that: the mass ratio of the planting soil filled in the pit to the hill-skin sand is 1.5-2.5: 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920592657.XU CN210797471U (en) | 2019-04-26 | 2019-04-26 | Saline-alkali region water resource regulation, storage and utilization system containing biological retention tank |
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| CN201920592657.XU CN210797471U (en) | 2019-04-26 | 2019-04-26 | Saline-alkali region water resource regulation, storage and utilization system containing biological retention tank |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892183A (en) * | 2020-07-16 | 2020-11-06 | 天津大学 | Underground water organic pollution in-situ blocking repair barrier and in-situ blocking repair method |
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2019
- 2019-04-26 CN CN201920592657.XU patent/CN210797471U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111892183A (en) * | 2020-07-16 | 2020-11-06 | 天津大学 | Underground water organic pollution in-situ blocking repair barrier and in-situ blocking repair method |
| CN111892183B (en) * | 2020-07-16 | 2022-02-08 | 天津大学 | In-situ blocking repair method for underground water organic pollution |
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Granted publication date: 20200619 Termination date: 20210426 |