CN105753164A - Sinking type river channel wetland system for river channel ecological restoration and construction method thereof - Google Patents
Sinking type river channel wetland system for river channel ecological restoration and construction method thereof Download PDFInfo
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- CN105753164A CN105753164A CN201610253601.2A CN201610253601A CN105753164A CN 105753164 A CN105753164 A CN 105753164A CN 201610253601 A CN201610253601 A CN 201610253601A CN 105753164 A CN105753164 A CN 105753164A
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/40—Protecting water resources
- Y02A20/402—River restoration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biotechnology (AREA)
- Botany (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Hydroponics (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a sinking type river channel wetland system for river channel ecological restoration and a construction method thereof.The wetland system comprises a river channel.The river channel is provided with pebble shoal areas and sinking type planting areas, and the pebble shoal areas and sinking type planting areas are alternately arranged along the water flow direction.Pebbles are laid in the river bed of each pebble shoal area to form a pebble layer.The river bed of each sinking type planting area is lower than the river bed of each pebble shoal area, and submerged plants with a water purifying function are planted on the river bed of the sinking type planting area to allow the sinking type planting area to form an ecological landscape area.The construction method includes: designating the pebble shoal areas and the sinking type planting areas in the to-be-constructed river channel, digging the sinking type planting areas according to preset depth, mounting stone cage protecting walls, laying the pebbles, and planting the submerged plants in the sinking type planting areas to form the ecological landscape areas.The sinking type river channel wetland system has the advantages that the system is good in water purifying effect, the growth of the submerged plants is guaranteed during the dry season, and damage of high-speed water flow to the submerged plants can be effectively avoided during the flood season.
Description
Technical field
The invention belongs to urban water-body restoration of the ecosystem field, be specifically related to a kind of sunk type wetlands along river system for river corridor restoration and construction method.
Background technology
In recent years, the fast development along with China's economy and the excessive exploitation to water resource, the inflow stream conductance such as industrial wastewater, rural sewage, sanitary sewage, rainwash water causes water quality of river deterioration, and serious destruction is suffered in the ecological environment in river.Except external source is polluted, the endogenous pollution in river also can not be ignored, and river bed alluvial black mud swims on the water surface for a long time, and particularly in summer, mud is floating and frowziness, has a strong impact on water scenery and surrounding resident life.
At present, dredging waterway it is important that cut dirt and administer, administer dirty, unrest, difference and elimination black and odorous water.But cutting dirt improvement and can only solve external source pollution, endogenous pollution still exists, the ecological functions in river still can not get recovering.
Although people taste and some rivers are carried out restoration of the ecosystem now, mostly its Main Means is that black and odorous water is administered by the growth naturally adopting submerged plant, but the city river that this technology is shallow at non-flood period water level at some, flood season level is high is but never employed.This causes mainly due to two big difficulties: one is how to provide, in dry season, the growing environment being suitable for for submerged plant;Two is how to enable submerged plant to resist washing away of flood in flood season, to prevent the destruction to submerged plant.
Summary of the invention
For prior art above shortcomings, the present invention provides a kind of sunk type wetlands along river system for river corridor restoration, and it has, and water body purification is effective, dry season ensures that submerged plant growth amount, flood season can be prevented effectively from the advantage that submerged plant is injured by high-velocity flow;The present invention also provides for its construction method simultaneously, and the method easy construction, quantities is little.
To achieve these goals, the technical solution used in the present invention is as follows:
A kind of sunk type wetlands along river system for river corridor restoration, including river course, described river course is alternatively set as pebble shoal district and sunk type growing area along water (flow) direction;The riverbed in described pebble shoal district is equipped with cobble, forms boulder bed, be used for slowing down water velocity, serve as biofilm matrix and build cobble view;The riverbed of described sunk type growing area, lower than the riverbed in pebble shoal district, is planted on the riverbed of described sunk type growing area and is implanted with the submerged plant with water purification function, so that sunk type growing area simultaneously constitutes ecoscape district.
Further, the intersection in described sunk type growing area and described pebble shoal district is provided with gabion retaining wall, and described gabion retaining wall is the internal zinc-plated gabion box equipped with stone.
Further, described sunk type growing area and pebble shoal district are-80 ~ 150m along the length of water (flow) direction, and the thickness of described boulder bed is 30cm, and the diameter of described cobble is 10 ~ 30cm.
Further, the riverbed of described sunk type growing area is lower than the riverbed 1m in pebble shoal district.
Further, described gabion retaining wall is 1m along the thickness of water (flow) direction, and it is highly 1m;The aperture of described zinc-plated gabion box is 100 × 200mm, inside it equipped with the diameter of stone be 15 ~ 25cm.
Further, the planting density of described submerged plant is 36 clumps/m2, plant height is not less than 20cm.
Further, described submerged plant is two or more in Herba vallisneriae Spiralis, hydrilla verticillata, Potamogeton maackianu, water caltrop and p.malaianus.
Further, the coverage rate of described submerged plant respectively Herba vallisneriae Spiralis 35%, hydrilla verticillata account for 20%, Potamogeton maackianu 15%, water caltrop 15%, p.malaianus 15%.
Further, described sunk type growing area is arranged in overall linear river course;Described river width≤20m, dry season the depth of water≤0.5m.
10, the construction method of a kind of sunk type wetlands along river system for river corridor restoration, it is characterised in that comprise the following steps:
1) replace according to city river shape and divide sunk type growing area and pebble shoal district;Wherein, sunk type growing area is arranged on the section of overall linearly type;
2) riverbed being divided into the region of sunk type growing area is dug downwards 1m deep, to form sunk type growing area;
3) gabion retaining wall is laid at the intersection with the pebble shoal district divided of sunk type growing area;Described gabion retaining wall is the internal zinc-plated gabion box equipped with stone;
4) riverbed being divided into the region in pebble shoal district is dug downwards 30cm deep, then with differing in size but diameter all cobbles between 10 ~ 30cm are laid on riverbed formation boulder bed, and then form pebble shoal district;
5) on the riverbed of sunk type growing area, planting submerged plant is planted, so that sunk type growing area concurrently forms ecoscape district.
Compared with prior art, there is advantages that
1, the present invention builds river channel ecology system and view by planting the mode of multiple submerged plant in sunk type growing area, even if in dry season, sunk type growing area still has the water yield that can ensure submerged plant growth, thus solving the problem that submerged plant is difficult to grow and river course bio-diversity lacks in dry season.
2, in the present invention, submerged plant is planted in sunk type growing area; flow velocity current faster through pebble shoal district rush speed after; major part can be passed through from the top of sunk type growing area, and the scouring force of sunk type growing area bottom and bottom is less, and this is effectively protected the root system of submerged plant;Additionally, arrange gabion retaining wall before and after each sunk type growing area, can effectively keeping out washing away of river in flood season, the growth for submerged plant provides a metastable environment.
3, in the present invention, the stone in gabion retaining wall slope and pebble shoal district as the substrate of aquatic microorganisms growth, can advantageously form the biomembrane with water purification function.
4, ecoscape district, ecoscape district and pebble shoal district can be built into the sunk type growing area different submerged plant of plantation to be arranged alternately, be conducive to building different Front river scenerys and see.
5, the sunk type wetlands along river system constructing for river corridor restoration of the present invention is simple, and quantities is little.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is that the A-A of the present invention is to cut-away view;
Fig. 3 is that the B-B of the present invention is to cut-away view.
In accompanying drawing: 1 pebble shoal district;11 boulder beds;2 sunk type growing areas;21 submerged plants;3 gabion retaining walls.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in further detail.
One, a kind of sunk type wetlands along river system for river corridor restoration, including river course, described river course is alternatively set as pebble shoal district 1 and sunk type growing area 2 along water (flow) direction;The riverbed in described pebble shoal district 1 is equipped with cobble, forms boulder bed 11, be used for slowing down water velocity, serve as biofilm matrix and build cobble view;The riverbed of described sunk type growing area 2, lower than the riverbed in pebble shoal district 1, is planted on the riverbed of described sunk type growing area 2 and is implanted with the submerged plant 21 with water purification function, so that sunk type growing area 2 simultaneously constitutes ecoscape district.
The view that pebble shoal district 1 can observe as cobble, also is able to slow down the speed of current in flood season, is conducive to the submerged plant 21 in protection sunk type growing area 2;Additionally, cobble is also used as the substrate of aquatic microorganisms growth, advantageously form the biomembrane with water purification function.Sunk type growing area 2 is planted planting submerged plant 21, so as to form ecoscape district, it is possible to beautifying city, submerged plant 21 more can be utilized to promote the self-purification capacity of water body, degradation of contaminant effectively, achieve many things at one stroke.Pebble shoal district 1 and sunk type growing area 2 are arranged alternately, the two is made to form organic whole, in flood season, owing to sunk type growing area 2 is lower than pebble shoal district 1, after flow velocity water faster flows through pebble shoal district 1 deceleration strip, flow away from sunk type growing area 2 top and top, thus efficiently reducing current washing away submerged plant 21 root system.In dry season, water can be built up to the sunk type growing area 2 being in lower naturally, thus meeting the water yield required for submerged plant 21 normal growth.
As optimization, the intersection in described sunk type growing area 2 and described pebble shoal district 1 is provided with gabion retaining wall 3, and described gabion retaining wall 3 is the internal zinc-plated gabion box equipped with stone.Gabion retaining wall 3 has stronger capacity of anti-storm, can provide stable growth environment for submerged plant 21.Why adopt zinc-plated gabion box to be because it and there is resistant to rust ability, it is possible to increase the service life.Owing to adopting the internal zinc-plated gabion box equipped with stone to build gabion retaining wall 3, gap is had between stone, stone as the substrate of aquatic microorganisms growth, can advantageously form the biomembrane with water purification function, and the gap between stone is also used as the nest of the aquatic animals such as Fish.
Being 80 ~ 150m as optimization, described sunk type growing area 2 and pebble shoal district 1 along the length of water (flow) direction, the thickness of described boulder bed 11 is 30cm, and the diameter of described cobble is 10 ~ 30cm.The length in described sunk type growing area 2 and pebble shoal district 1 should be suitable for, the long effect not reaching adjustment flow velocity in flood season, is also difficult to the accumulation effect of water in dry season;And too short, then it is unfavorable for engineering construction, is also not easy to the construction of view, affect visual effect.The thickness of boulder bed 11 should also be as being suitable for, blocked up construction volume when can increase construction, crosses shallow, does not reach the effect of Landscape construction.The cobble adopted is not easily too small, and too little Yi is washed away by current, finally makes it deposit in sunk type growing area 2, is unfavorable for the growth of submerged plant 21;If cobble is excessive, then can hinder the proper flow of water body.
As optimization, the riverbed of described sunk type growing area 2 is lower than the riverbed 1m in pebble shoal district 1.The riverbed of sunk type growing area 2 is crossed can affect submerged plant 21 daylighting deeply;Cross shallow, do not reach and protect the purpose of submerged plant 21 in flood season, it is also difficult to realize building up in dry season the effect of water.
As optimization, described gabion retaining wall 3 is 1m along the thickness of water (flow) direction, and it is highly 1m;The aperture of described zinc-plated gabion box is 100 × 200mm, inside it equipped with the diameter of stone be 15 ~ 25cm.The material adopting such specification had both met the basic demand realizing its function, has farthest saved again material, has reduced quantities.
As optimization, the planting density of described submerged plant 21 is 36 clumps/m2, plant height is not less than 20cm.Submerged plant 21 kinds is planted overstocked, is unfavorable for the growth of submerged plant 21, crosses and dredges the purpose then not reaching purification of water quality.Appropriate plant height is then conducive to the construction of ecoscape.
As further optimization, described submerged plant 21 is two or more in Herba vallisneriae Spiralis, hydrilla verticillata, Potamogeton maackianu, water caltrop and p.malaianus.The miscegenation of multiple submerged plant 21 not only improves its respective advantage of performance and improves purifying water effect, can build again different plants landscapes.
As optimum Plant plane, in order to make the effect of each heavy water kind thing farthest be utilized, the coverage rate of described submerged plant 21 respectively Herba vallisneriae Spiralis 35%, hydrilla verticillata account for 20%, Potamogeton maackianu 15%, water caltrop 15%, p.malaianus 15%.
As optimization, for the ease of construction, it is to avoid whirlpool that flowing water is formed at turning injury submerged plant 21, described sunk type growing area 2 should be arranged in the river course that entirety is linear, this river width≤20m, dry season the depth of water≤0.5m.
The plants configuration of the present invention is reasonable, is effectively improved bio-diversity, sunk type growing area 2 and gabion retaining wall 3 capacity of anti-storm strong, provides stable growth environment for submerged plant 21.While submerged plant 21 enhances the ability of water body purification water quality, also there is certain ornamental type.This invention is applicable to the water ecology reparation in the shallower river course of the depth of water.
Two, the construction method of a kind of sunk type wetlands along river system for river corridor restoration, comprise the following steps:
1) replace according to city river shape and divide sunk type growing area 2 and pebble shoal district 1;Wherein, sunk type growing area 2 is arranged on the section of overall linearly type.
2) riverbed being divided into the region of sunk type growing area 2 is dug downwards 1m deep, to form sunk type growing area 2.
3) gabion retaining wall 3 is laid at the intersection with the pebble shoal district 1 divided of sunk type growing area 2;Described gabion retaining wall 3 is the internal zinc-plated gabion box equipped with stone.
4) riverbed being divided into the region in pebble shoal district is dug downwards 30cm deep, then with differing in size but diameter all cobbles between 10 ~ 30cm are laid on riverbed formation boulder bed, and then form pebble shoal district.
5) on the riverbed of sunk type growing area 2, planting submerged plant 21 is planted, so that sunk type growing area 2 concurrently forms ecoscape district.
The above embodiment of the present invention is only for example of the present invention is described, and is not the restriction to embodiments of the present invention.For those of ordinary skill in the field, other multi-form change and variations can also be made on the basis of the above description.Here cannot all of embodiment be given exhaustive.Every belong to apparent change that technical scheme amplified out or the variation row still in protection scope of the present invention.
Claims (10)
1. for a sunk type wetlands along river system for river corridor restoration, including river course, it is characterised in that described river course is alternatively set as pebble shoal district and sunk type growing area along water (flow) direction;
The riverbed in described pebble shoal district is equipped with cobble, forms boulder bed, be used for slowing down water velocity, serve as biofilm matrix and build cobble view;
The riverbed of described sunk type growing area, lower than the riverbed in pebble shoal district, is planted on the riverbed of described sunk type growing area and is implanted with the submerged plant with water purification function, so that sunk type growing area simultaneously constitutes ecoscape district.
2. the sunk type wetlands along river system for river corridor restoration according to claim 1, it is characterized in that, the intersection in described sunk type growing area and described pebble shoal district is provided with gabion retaining wall, and described gabion retaining wall is the internal zinc-plated gabion box equipped with stone.
3. the sunk type wetlands along river system for river corridor restoration according to claim 1, it is characterized in that, described sunk type growing area and pebble shoal district are-80 ~ 150m along the length of water (flow) direction, and the thickness of described boulder bed is 30cm, and the diameter of described cobble is 10 ~ 30cm.
4. the sunk type wetlands along river system for river corridor restoration according to claim 1, it is characterised in that the riverbed of described sunk type growing area is lower than the riverbed 1m in pebble shoal district.
5. the sunk type wetlands along river system for river corridor restoration according to claim 2, it is characterised in that described gabion retaining wall is 1m along the thickness of water (flow) direction, and it is highly 1m;The aperture of described zinc-plated gabion box is 100 × 200mm, inside it equipped with the diameter of stone be 15 ~ 25cm.
6. the sunk type wetlands along river system for river corridor restoration according to claim 1, it is characterised in that the planting density of described submerged plant is 36 clumps/m2, plant height is not less than 20cm.
7. the sunk type wetlands along river system for river corridor restoration according to claim 6, it is characterised in that described submerged plant is two or more in Herba vallisneriae Spiralis, hydrilla verticillata, Potamogeton maackianu, water caltrop and p.malaianus.
8. the sunk type wetlands along river system for river corridor restoration according to claim 7, it is characterised in that the coverage rate of described submerged plant respectively Herba vallisneriae Spiralis 35%, hydrilla verticillata account for 20%, Potamogeton maackianu 15%, water caltrop 15%, p.malaianus 15%.
9. according to the arbitrary described sunk type wetlands along river system for river corridor restoration of claim 1-8, it is characterised in that described sunk type growing area is arranged in overall linear river course;Described river width≤20m, dry season the depth of water≤0.5m.
10. the construction method for the sunk type wetlands along river system of river corridor restoration, it is characterised in that comprise the following steps:
1) replace according to city river shape and divide sunk type growing area and pebble shoal district;Wherein, sunk type growing area is arranged on the section of overall linearly type;
2) riverbed being divided into the region of sunk type growing area is dug downwards 1m deep, to form sunk type growing area;
3) gabion retaining wall is laid at the intersection with the pebble shoal district divided of sunk type growing area;Described gabion retaining wall is the internal zinc-plated gabion box equipped with stone;
4) riverbed being divided into the region in pebble shoal district is dug downwards 30cm deep, then with differing in size but diameter all cobbles between 10 ~ 30cm are laid on riverbed formation boulder bed, and then form pebble shoal district;
5) on the riverbed of sunk type growing area, planting submerged plant is planted, so that sunk type growing area concurrently forms ecoscape district.
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
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CN107217641A (en) * | 2017-08-03 | 2017-09-29 | 重庆市环境科学研究院 | River course deep ditch type submerged forest system and its construction method |
CN108558017A (en) * | 2018-03-30 | 2018-09-21 | 中冶华天工程技术有限公司 | Composite river wet land system for river corridor restoration |
CN109928570A (en) * | 2018-11-05 | 2019-06-25 | 玉溪师范学院 | It is a kind of for cutting down the river treatment facilities and its construction method of amount of pollutant |
CN110040853A (en) * | 2019-03-29 | 2019-07-23 | 浙江融信环保科技有限公司 | A method of suitable for the synchronous restoration of the ecosystem of Mountain river rural area section waterfront |
CN110104779A (en) * | 2019-03-29 | 2019-08-09 | 浙江农林大学 | A kind of construction method of farmland nitrogen phosphorus ecological intercepting sewerage |
CN113493247A (en) * | 2021-07-05 | 2021-10-12 | 杭州国泰环保科技股份有限公司 | Method for ecological restoration of river channel |
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CN102146666A (en) * | 2011-02-16 | 2011-08-10 | 河海大学 | River waterfront multiplayer composite plant pollutant purification zone and construction method of river waterfront multiplayer composite plant pollutant purification zone |
CN105293706A (en) * | 2015-10-22 | 2016-02-03 | 东北师范大学 | Urban sinking gallery type landscape wetland |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN102146666A (en) * | 2011-02-16 | 2011-08-10 | 河海大学 | River waterfront multiplayer composite plant pollutant purification zone and construction method of river waterfront multiplayer composite plant pollutant purification zone |
CN105293706A (en) * | 2015-10-22 | 2016-02-03 | 东北师范大学 | Urban sinking gallery type landscape wetland |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN107217641A (en) * | 2017-08-03 | 2017-09-29 | 重庆市环境科学研究院 | River course deep ditch type submerged forest system and its construction method |
CN108558017A (en) * | 2018-03-30 | 2018-09-21 | 中冶华天工程技术有限公司 | Composite river wet land system for river corridor restoration |
CN109928570A (en) * | 2018-11-05 | 2019-06-25 | 玉溪师范学院 | It is a kind of for cutting down the river treatment facilities and its construction method of amount of pollutant |
CN110040853A (en) * | 2019-03-29 | 2019-07-23 | 浙江融信环保科技有限公司 | A method of suitable for the synchronous restoration of the ecosystem of Mountain river rural area section waterfront |
CN110104779A (en) * | 2019-03-29 | 2019-08-09 | 浙江农林大学 | A kind of construction method of farmland nitrogen phosphorus ecological intercepting sewerage |
CN113493247A (en) * | 2021-07-05 | 2021-10-12 | 杭州国泰环保科技股份有限公司 | Method for ecological restoration of river channel |
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