CN114108547A - River bank vegetation buffer zone and construction method thereof - Google Patents
River bank vegetation buffer zone and construction method thereof Download PDFInfo
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- CN114108547A CN114108547A CN202111400942.5A CN202111400942A CN114108547A CN 114108547 A CN114108547 A CN 114108547A CN 202111400942 A CN202111400942 A CN 202111400942A CN 114108547 A CN114108547 A CN 114108547A
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- 238000010276 construction Methods 0.000 title claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000010865 sewage Substances 0.000 claims abstract description 33
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 26
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 23
- 231100000719 pollutant Toxicity 0.000 claims abstract description 23
- 230000021715 photosynthesis, light harvesting Effects 0.000 claims abstract description 22
- 238000009991 scouring Methods 0.000 claims abstract description 9
- 235000014676 Phragmites communis Nutrition 0.000 claims abstract description 6
- 239000002689 soil Substances 0.000 claims description 16
- 230000002708 enhancing effect Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000001965 increasing effect Effects 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 241000282414 Homo sapiens Species 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000010902 straw Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
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- 238000005325 percolation Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/06—Moles; Piers; Quays; Quay walls; Groynes; Breakwaters ; Wave dissipating walls; Quay equipment
- E02B3/066—Quays
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Botany (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Biodiversity & Conservation Biology (AREA)
- Organic Chemistry (AREA)
- Chemical & Material Sciences (AREA)
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- Biotechnology (AREA)
- Revetment (AREA)
Abstract
The utility model provides a bank vegetation buffer zone and a construction method, the buffer zone comprises: the energy dissipation pool is arranged on one side of the flood control wall close to the river, is adjacent to a sewage discharge outlet on the flood control wall and is used for reducing the flow velocity of water flow passing through the sewage discharge outlet; the tree pit is internally provided with a seepage-enhancing layer; the middle platform is arranged on a slope of a near water area of a river bank; the intercepting grass planting ditch is arranged on the middle platform, and a lawn is paved in the intercepting grass planting ditch and is used for intercepting pollutants carried in runoff; the flat ground is provided with a reed belt near the river area for preventing pollutants from entering the river. The flow velocity of runoff at the sewage discharge port of the road surface can be effectively reduced through the energy dissipation pool, the scouring force of the runoff of the road surface is reduced, and the damage of the runoff on the ground to a river bank below the sewage discharge port is reduced; the pollutants carried in the runoff of the bottom surface are intercepted by arranging the intercepting grass planting ditch on the slope of the near water area.
Description
Technical Field
The disclosure relates to the field of non-point source pollution control, in particular to a bank vegetation buffer zone and a construction method thereof.
Background
With the continuous development of society, the pollution of water resources has become a global problem which is commonly concerned by human beings, and in order to solve a series of environmental problems such as water quality deterioration, the fundamental way is to reduce the input of exogenous pollutants. The riparian zone is an effective barrier for reducing pollution entering a river, and plants and soil in the riparian zone are important components of a riparian zone ecosystem and play a role in pollution prevention and control. In modern society, as the population is increased rapidly, the industrial development and the urbanization are accelerated, the ecological system of the riparian zone is seriously influenced by human activities, and the conditions of vegetation damage, water deterioration, soil pollution and the like occur; and serious non-point source pollution aggravates the phenomena of water and soil loss and soil nutrient reduction, further causes the remarkable reduction of biodiversity and serious degradation of the function of an ecological system, so that the riparian zone in the world is in a gradually disappeared state at the present stage.
The riparian vegetation buffer zone reduces the concentration of pollutants in water passing through the riparian zone through a series of physical, chemical, biological and biochemical processes (including permeation, absorption, filtration, detention, deposition and the like) to achieve the function of purifying water quality. The plant absorption function is one of the important ways for the nutrient interception and transformation of the ecosystem of the riparian zone.
In the related technology, flood control dams are built in partial regions along the bank of the sand river reservoir, and the flood control dams are provided with one sewage discharge outlet at certain intervals. In rainy days, the runoff on the road surface is gathered through a sewage discharge outlet to form runoff with strong scouring force, and the characteristic of typical 'surface change point' exists; the lower end of the sewage draining outlet is impacted and damaged greatly to cause soil landslide and loss of the riparian zone; especially, in the flood season, the damage degree to the riparian zone is more obvious. Meanwhile, the bank zone has larger and shorter gradient; the hardened degree of the road surface is serious, which is not beneficial to the interception of pollutants, and the pollutants can easily enter rivers directly.
Disclosure of Invention
In order to solve any technical problem in the above or other aspects of the related art, embodiments of the present disclosure provide a bank vegetation buffer zone and a construction method thereof, so as to solve an influence of road surface runoff on the bank buffer zone.
According to some embodiments of an aspect of the present disclosure, there is provided a bank vegetation buffer zone, including:
the energy dissipation pool is arranged on one side of the flood control wall close to the river, is adjacent to a sewage discharge outlet on the flood control wall and is used for reducing the flow velocity of water flow passing through the sewage discharge outlet;
the middle platform is arranged on a slope of a near water area of a river bank;
and the interception grass planting ditch is arranged on the middle platform, and a first lawn is laid in the interception grass planting ditch and is used for intercepting pollutants carried in runoff.
According to some embodiments of the disclosure, gravel is disposed within the energy dissipater.
According to some embodiments of the disclosure, the buffer zone further comprises:
the arbor belt is arranged on one side of the flood control wall close to the river;
and the permeation enhancing layer is arranged in the tree pit of the arbor belt and is made by doping a permeation enhancing material into surface soil.
And the second lawn is arranged in the tree pit and used for increasing the water retention capacity of the arbor belt.
According to some embodiments of the disclosure, a communication pipeline is arranged between two adjacent tree pits and used for balancing the pressure of accumulated water in the tree pits near the sewage draining outlet.
According to some embodiments of the disclosure, the buffer zone further comprises:
and the small-sized shrub belt is arranged around the tree pit and the interception grass planting ditch and is used for enhancing the stability of the soil at the edges of the tree pit and the interception grass planting ditch.
According to some embodiments of the disclosure, further comprising:
and the third lawn is laid on the slope and the flat ground of the near water area and used for intercepting pollutants and reducing the scouring of runoff on a riparian zone.
According to some embodiments of the disclosure, the third lawn is paved with gravel.
According to some embodiments of the disclosure, the flat ground is provided with a reed band near the river area.
An embodiment according to another aspect of the present disclosure provides a method for constructing a bank vegetation buffer zone, including:
digging an energy dissipation pool at a sewage discharge port on one side of the flood control wall close to the river, wherein the energy dissipation pool is used for reducing the flow velocity of water flow passing through the sewage discharge port;
constructing an intermediate platform on a slope of a near-water area of a river bank;
and digging an interception grass planting ditch on the middle platform, and paving a first lawn in the interception grass planting ditch for intercepting pollutants carried in runoff.
According to some embodiments of the disclosure, further comprising:
doping a permeation enhancing material into surface soil in a tree pit of the arbor belt, and planting a second lawn in the tree pit;
and laying a communicating pipeline between two adjacent tree pits.
By the technical scheme, the energy dissipation pool arranged at the sewage discharge port can effectively reduce the flow velocity of the road surface runoff, reduce the scouring force of the road surface runoff and reduce the damage of the ground runoff on the river bank below the sewage discharge port; the pollutants carried in the runoff of the bottom surface are intercepted by arranging the intercepting grass planting ditch on the slope of the near water area.
Drawings
Fig. 1 schematically illustrates a structural schematic of a bank vegetation buffer zone of an embodiment of the disclosure;
FIG. 2 schematically illustrates a structural view of a bank vegetation buffer zone from another perspective of an embodiment of the disclosure;
figure 3 schematically illustrates an energy-dissipating pool structure schematic of a riparian vegetation buffer zone of an embodiment of the disclosure;
FIG. 4 schematically illustrates a grass-retaining trench structure of a bank vegetation buffer zone in accordance with an embodiment of the disclosure;
FIG. 5 schematically illustrates a tree pit structure schematic of a bank vegetation buffer zone of an embodiment of the disclosure;
fig. 6 schematically illustrates a flow chart of a method of constructing a bank vegetation buffer zone according to an embodiment of the disclosure;
in the above figures, the reference numerals have the following meanings:
1-a sewage draining outlet;
2-an energy dissipation pool;
3-gravel;
4-tree pit;
5-arbor;
6-small shrubs;
7-intercepting the grass planting ditch;
8-flood control wall;
9-slope lawn;
10-flat lawn;
11-reed;
12-a communication pipe;
13-river.
Detailed Description
For the purpose of promoting a better understanding of the objects, aspects and advantages of the present disclosure, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
It should be understood that the description is illustrative only and is not intended to limit the scope of the present disclosure. In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the disclosure. It may be evident, however, that one or more embodiments may be practiced without these specific details. Furthermore, in the following description, descriptions of well-known technologies are omitted so as to avoid unnecessarily obscuring the concepts of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The term "comprising" as used herein indicates the presence of the features, steps, operations but does not preclude the presence or addition of one or more other features.
All terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art unless otherwise defined. It is noted that the terms used herein should be interpreted as having a meaning that is consistent with the context of this specification and should not be interpreted in an idealized or overly formal sense.
In order to solve any technical problem in the above or other aspects of the related art, embodiments of the present disclosure provide a bank vegetation buffer zone and a construction method thereof, so as to solve an influence of road surface runoff on the bank buffer zone.
Fig. 1 schematically illustrates a structural schematic diagram of a bank vegetation buffer zone of an embodiment of the disclosure.
According to some embodiments of one aspect of the present disclosure, there is provided a bank vegetation buffer zone, as shown in fig. 1, comprising an energy-dissipating pool 2, an intermediate platform and a grass-retaining gutter 7.
Fig. 2 schematically shows a structural schematic diagram of a river bank vegetation buffer zone from another perspective in the embodiment of the disclosure, and fig. 3 schematically shows an energy dissipation pool structural schematic diagram of the river bank vegetation buffer zone in the embodiment of the disclosure.
According to some embodiments of the present disclosure, as shown in fig. 1 to 3, an energy dissipation pool 2 is disposed at one side of a flood wall 8 near a river 13, the energy dissipation pool 2 is disposed adjacent to a sewage discharge port 1 on the flood wall 8, and the energy dissipation pool 2 is used for reducing the flow rate of water flowing through the sewage discharge port 1.
According to some embodiments of the present disclosure, the energy dissipation pool 2 and the sewage draining exit 1 are coaxially arranged, that is, the falling point of the water flow passing through the sewage draining exit 1 is within the range of the energy dissipation pool 2, and the energy dissipation pool 2 can quickly change the rapid downward flow of the sewage draining exit 1 into a slow flow, specifically, the kinetic energy of the water flow downward flowing from the sewage draining exit 1 can be eliminated by 40% -70%.
According to some embodiments of the present disclosure, the inside of the energy dissipation pool 2 is provided with gravel 3 and other materials, which further improves the elimination of kinetic energy of the let-down water flow.
In this embodiment, the gravel 3 can be made of local materials, so that the construction cost is low, and meanwhile, the later maintenance is also convenient and the maintenance cost is low.
According to some embodiments of the present disclosure, the shape of the energy dissipation pool 2 is square or circular, and the width or diameter of the energy dissipation pool 2 is larger than the width of the sewage drain 1.
According to some embodiments of the disclosure, the intermediate platform is disposed on a slope of a near water zone of the river bank.
According to some embodiments of the present disclosure, the middle platform is provided with a middle part or a middle upper part of the slope, and optionally, a walkway is provided on the middle platform to facilitate maintenance and overhaul by a later maintenance worker.
According to some embodiments of the disclosure, the intermediate platform is arranged along the run of the bank vegetation buffer zone.
Fig. 4 schematically illustrates a grass-retaining trench structure of a bank vegetation buffer zone according to an embodiment of the present disclosure.
According to some embodiments of the present disclosure, as shown in fig. 4, the entrapment grass planting furrow 7 is disposed on the intermediate platform; alternatively, the grass-trapping groove 7 may be directly on a slope provided in the near-water region.
In the embodiment, the first lawn is laid in the grass planting retaining ditch 7 and used for retaining pollutants carried in the runoff and reducing the damage effect of the runoff on a river bank zone.
In this embodiment, when the rainfall runoff passes through the grass-planting retaining trench 7 at a low flow rate, the pollutants carried in the rainfall runoff are effectively removed under the comprehensive actions of retaining, plant filtering and percolation of the grass-planting retaining trench 7.
In this embodiment, can see based on the pollutant of the particle state of holding back in grass planting ditch 7, consequently, can solve traditional rainwater pipeline and sewer line and mix the problem together and hold back the grass planting ditch and combine effectual administrative measure, hold back in advance and get rid of and finally get into the pollutant that receives the dirty water body
Fig. 5 schematically illustrates a tree pit structure schematic diagram of a bank vegetation buffer zone of an embodiment of the disclosure.
According to some embodiments of the present disclosure, as shown in fig. 5, the buffer zone further comprises a tree zone and a permeation enhancing layer.
According to some embodiments of the present disclosure, the tree band is disposed on one side of the flood wall near the river 13, wherein the trees 5 can improve the erosion resistance of a 25-40 cm soil layer.
According to some embodiments of the present disclosure, trees 5 are planted at intervals along the run of the buffer strip.
According to some embodiments of the present disclosure, a permeation enhancement layer is provided within the tree pit 4 of the arbor 5, the permeation enhancement layer being made by incorporating a permeation enhancement material within the topsoil.
In this embodiment, the tree pit 4 of the tree 5 is a square tree pit, and optionally, if the tree pit is a newly laid buffer zone, the tree pit can be directly dug into a square tree pit; if the existing arbor 5 exists, the pit 4 of the existing arbor 5 can be shaped and trimmed into a square with the same size.
In this embodiment, optionally, the infiltration promoting material includes straw, reed rod, etc., and the straw or reed rod is pulverized and then doped to increase infiltration of the soil on the inner surface of the tree pit 4.
According to some alternative embodiments of the present disclosure, a second lawn is disposed within the tree pit 4 of the arbor 5.
According to some alternative embodiments of the disclosure, the second lawn is a juveniles plant.
According to some embodiments of the present disclosure, a communication pipe 12 is arranged between two adjacent tree pits 4, and the communication pipe 12 is used for balancing the pressure of accumulated water in the tree pits near the sewage draining outlet.
According to some embodiments of the present disclosure, the communication conduit 12 is a concealed conduit. Optionally, the communication pipe 12 is buried under the surface layer of the road surface.
In this embodiment, the communication pipe 12 may be a buried pipe, such as a PVC pipe, or the communication pipe 12 may be a cast or piled underdrain, such as concrete, so as to divide the runoff pressure near the sewage port equally, avoid soil landslide, and avoid the erosion damage to the plants in the buffer zone.
According to some embodiments of the present disclosure, the buffer zone further comprises a small shrub zone, the small shrubs 6 being disposed around the tree pit 4 and the grass-trapping ditch 7 of the tree 5 for enhancing the stability of the soil at the edge of the tree pit 4 and the grass-trapping ditch; meanwhile, the direct scouring of runoff on the intercepted grass planting ditch 7 is favorably reduced, the shape of the intercepted grass planting ditch 7 is kept, and the landscape beautifying effect is achieved.
According to some embodiments of the present disclosure, the third lawn is laid on the slope and the flat ground of the near water zone of the buffer zone, and is used for intercepting pollutants and reducing scouring of runoff to a river bank zone.
According to some embodiments of the present disclosure, the third lawn comprises a sloping lawn 9 and a flat ground lawn 10, wherein the sloping lawn 9 is laid at an upper slope and a lower slope of the intermediate platform; the flat lawn 10 is laid in the flat bottom area between the bottom of the slope and the river 13.
In this embodiment, the slope lawn 9 and the flat lawn 10 can further intercept pollutants, reduce the scouring of runoff to the riparian zone, increase firm soil, expand capacity and increase infiltration, improve the water retention capacity of the vegetation buffer zone, and improve the interception of runoff pollution.
According to some alternative embodiments of the present disclosure, gravel is laid on the sloping lawn 9 and the flat lawn 10 to play a role in dissipating energy from slight falling water and protecting the third lawn form.
According to some optional embodiments of the present disclosure, a reed band is disposed in the region close to the river 13 on the flat ground to purify the river 13 and intercept pollutants.
Fig. 6 schematically shows a flowchart of a method for constructing a bank vegetation buffer zone according to an embodiment of the present disclosure.
An embodiment according to another aspect of the present disclosure provides a method for constructing a river bank vegetation buffer zone, as shown in fig. 6, including operations S101 to S103.
According to some embodiments of the present disclosure, operation S101 includes: an energy dissipation pool is dug at a sewage discharge port on one side of the flood control wall close to the river 13 and used for reducing the flow rate of water flow passing through the sewage discharge port.
According to some embodiments of the present disclosure, operation S102 includes: and constructing an intermediate platform on the slope of the near-water area of the river bank.
According to some embodiments of the present disclosure, operation S103 includes: an intercepting grass planting ditch is dug in the middle platform, and a first lawn is laid in the intercepting grass planting ditch and used for intercepting pollutants carried in runoff.
According to some embodiments of the present disclosure, operations S201 to S202 are also included.
According to some embodiments of the present disclosure, operation S201 includes: and (3) doping a permeation enhancing material into surface soil in the tree pit (4) of the arbor belt, and planting a second lawn in the tree pit (4).
According to some embodiments of the present disclosure, operation S202 includes: and a communication pipeline is laid between two adjacent tree pits 4.
By the technical scheme, the energy dissipation pool arranged at the sewage discharge port can effectively reduce the flow velocity of the road surface runoff, reduce the scouring force of the road surface runoff and reduce the damage of the ground runoff on the river bank below the sewage discharge port; the pollutants carried in the runoff of the bottom surface are intercepted by arranging the intercepting grass planting ditch on the slope of the near water area.
So far, the embodiments of the present disclosure have been described in detail with reference to the accompanying drawings. It is to be noted that, in the attached drawings or in the description, the implementation modes not shown or described are all the modes known by the ordinary skilled person in the field of technology, and are not described in detail. In addition, the above definitions of the components are not limited to the specific structures, shapes or manners mentioned in the embodiments, and those skilled in the art may easily modify or replace them.
It is also noted that, unless otherwise indicated, the numerical parameters set forth in the specification and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by the present disclosure. In particular, all numbers expressing dimensions, range conditions, and so forth, used in the specification and claims are to be understood as being modified in all instances by the term "about". Generally, the expression is meant to encompass variations of ± 10% in some embodiments, 5% in some embodiments, 1% in some embodiments, 0.5% in some embodiments by the specified amount.
Those skilled in the art will appreciate that various combinations and/or combinations of features recited in the various embodiments and/or claims of the present disclosure can be made, even if such combinations or combinations are not expressly recited in the present disclosure. In particular, various combinations and/or combinations of the features recited in the various embodiments and/or claims of the present disclosure may be made without departing from the spirit or teaching of the present disclosure. All such combinations and/or associations are within the scope of the present disclosure.
The above-mentioned embodiments are intended to illustrate the objects, aspects and advantages of the present disclosure in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present disclosure and are not intended to limit the present disclosure, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A bank vegetation buffer zone, characterized in that includes:
the energy dissipation pool is arranged on one side of the flood control wall close to the river, is adjacent to a sewage discharge outlet on the flood control wall and is used for reducing the flow velocity of water flow passing through the sewage discharge outlet;
the middle platform is arranged on a slope of a near water area of a river bank;
and the interception grass planting ditch is arranged on the middle platform, and a first lawn is laid in the interception grass planting ditch and is used for intercepting pollutants carried in runoff.
2. The riparian vegetation buffer zone according to claim 1, wherein gravel is disposed in the energy dissipater.
3. The riparian vegetation buffer zone of claim 1, further comprising:
the arbor belt is arranged on one side of the flood control wall close to the river;
the permeation enhancing layer is arranged in the tree pit of the arbor belt and is made by doping a permeation enhancing material into surface soil;
and the second lawn is arranged in the tree pit and used for increasing the water retention capacity of the arbor belt.
4. The revetment vegetation buffer zone of claim 3, wherein a communication pipe is arranged between two adjacent pits for equalizing pressure of accumulated water in the pits near the sewage outlet.
5. The riparian vegetation buffer zone of claim 3, further comprising:
and the small-sized shrub belt is arranged around the tree pit and the interception grass planting ditch and is used for enhancing the stability of the soil at the edges of the tree pit and the interception grass planting ditch.
6. The riparian vegetation buffer zone of claim 1, further comprising:
and the third lawn is laid on the slope and the flat ground of the near water area and used for intercepting pollutants and reducing the scouring of runoff on a riparian zone.
7. The riparian vegetation buffer zone of claim 6, wherein the third lawn has gravel placed thereon.
8. The riparian vegetation buffer zone according to claim 6, wherein a reed zone is provided on the flat ground near the river area.
9. A construction method of a river bank vegetation buffer zone is characterized by comprising the following steps:
digging an energy dissipation pool at a sewage discharge port on one side of the flood control wall close to the river, wherein the energy dissipation pool is used for reducing the flow velocity of water flow passing through the sewage discharge port;
constructing an intermediate platform on a slope of a near-water area of a river bank;
and digging an interception grass planting ditch on the middle platform, and paving a first lawn in the interception grass planting ditch for intercepting pollutants carried in runoff.
10. The construction method according to claim 9,
doping a permeation enhancing material into surface soil in a tree pit of the arbor belt, and planting a second lawn in the tree pit;
and laying a communicating pipeline between two adjacent tree pits.
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| CN202111400942.5A CN114108547A (en) | 2021-11-19 | 2021-11-19 | River bank vegetation buffer zone and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114656112A (en) * | 2022-04-19 | 2022-06-24 | 中持水务股份有限公司 | Buffer belt structure and buffer belt manufacturing method |
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