CN108824365A - The double-deck arc riverbed restoration of the ecosystem structure - Google Patents
The double-deck arc riverbed restoration of the ecosystem structure Download PDFInfo
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- CN108824365A CN108824365A CN201810677682.8A CN201810677682A CN108824365A CN 108824365 A CN108824365 A CN 108824365A CN 201810677682 A CN201810677682 A CN 201810677682A CN 108824365 A CN108824365 A CN 108824365A
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- overflow weir
- river
- layer overflow
- outer layer
- arc
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 239000002352 surface water Substances 0.000 claims abstract description 20
- 239000003673 groundwater Substances 0.000 claims abstract description 16
- 239000004575 stone Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 10
- 238000011144 upstream manufacturing Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 abstract description 7
- 238000000746 purification Methods 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 2
- 238000011109 contamination Methods 0.000 abstract 1
- 238000011161 development Methods 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005183 environmental health Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- 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
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
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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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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a kind of double-deck arc riverbed restoration of the ecosystem structures, including outer layer overflow weir, internal layer overflow weir and rubble dam shoulder, internal layer overflow weir and outer layer overflow weir are arc-shaped to upper river protrusion, internal layer overflow weir is in outer layer overflow weir downstream, the intermediate low both sides of two layers of overflow weir are high, and are connected with rubble dam shoulder.Compared with existing waterway safeguard measure, the present invention has the multiple functions such as protection bank erosion, the exchange of enhancing surface water and groundwater, protection river channel ecology system, enhancing the ability of the river self-purification.The structure not only avoids the destruction to river channel ecology system, strengthens enhance the connectivity of surface water and groundwater instead, can the effective protection natural river course ecosystem, enhance river water body self-purification capacity, while providing habitat for aquatile.The present invention is low in cost, and required artificial few, structural life-time is long, and in the fields such as dredging waterway, riparian protection and river water contamination treating, application prospect is very wide.
Description
Technical field
The present invention relates to river water and soil conservations and river ecological to administer field, more particularly to the double-deck arc riverbed restoration of the ecosystem
Structure and design method.
Background technique
Water and soil conservation is the lifeline of mountain development, be land management, river management it is basic, be national economy and society
The basis of development.Bank erosion is almost present in all rivers banks, and the riverbank being etched often will cause serious environment and ask
Topic, the big bank slope collapse of intensity even can lead to great dangerous situation, seriously threaten littoral the people's lives and property safety.It is stripped river
The silt of bank is after entering rivers, the growth and development that further can be destroyed water quality, influence aquatile, or even in downstream siltation
River influences to open the navigation or air flight.And it is traditional curve cut-off, the water course regularization measures such as river hardening, underground water in river substrate can be isolated
The connected relation of surface water body, has separated connecing for the animals and plants object in river waters, microorganism and river substrate in body and river
Touching, and its living environment is caused to deteriorate, reduce the natural self-purification capacity in river.In addition, recently as the quick of economic society
Development, the destruction of artificial element, river pollution are got worse, and water body appearance is seasonal or black throughout the year smelly, and it is raw to become China river
Water environmental problems urgently to be resolved in state improvement.
Currently, China is basic in the technology for preventing the fields such as bank erosion, maintenance river ecological, the improvement pollution of river from using
Also rest on and individually administer earth's surface water level, and in view of surface and ground water is as an organic whole, there is compared with
Strong connectivity, to ignore the meaning of surface and ground water being exchanged with each other to river ecosystem.River water and ground
The staggered region of table water, i.e. phreatic zone are the regions of exchanges of mass and energy, biocoene growth and breeding, are maintaining river
" river liver " this key player is play in terms of environmental health.A large number of studies show that phreatic zone is promoting nutriment to follow
Ring, pollution remission water body, offer and the good aquatic life habitat of maintenance etc. are of great significance.
Therefore, in dredging waterway, need it is a kind of can prevent bank erosion under the premise of non-sclerous river, and can be comprehensive
Close the restoration of the ecosystem means for considering surface water and groundwater process to reinforce the ability of the river self-purification.
Summary of the invention
Goal of the invention：The object of the present invention is to provide a kind of double-deck arc riverbed restoration of the ecosystem structures, on protection riverbank
It prevents from avoiding hardening river while erosion and causing ecological disruption, while being enhanced by increasing surface water and groundwater exchange
Stream self-purification ability, to administer the pollution of river.
Technical solution：The double-deck arc riverbed restoration of the ecosystem structure, including outer layer overflow weir, internal layer overflow weir and rubble dam
Shoulder, internal layer overflow weir and outer layer overflow weir it is arc-shaped to upper river protrusion, internal layer overflow weir is in outer layer overflow weir downstream, two
The intermediate low both sides of layer overflow weir are high, and are connected with rubble dam shoulder.
Outer layer overflow weir length is 2~3 times of river width, and the angle on outer layer overflow weir two sides and riverbank is 20 °~30 °.
Reparation structure is spaced suitable distance in river and continuously arranges, enhances between surface and ground water in large scale
Undercurrent exchange interaction, realize the restoration of the ecosystem of Watershed Scale.
Outer layer overflow weir is inlayed by different-diameter block stone, and internal layer overflow weir is inlayed by equal diameter block stone.
Rubble dam shoulder extends vertically into riverbank, is 110 °~120 ° with outer layer overflow weir arcuate structure two-arm angle.
Overflow weir raises upstream water level, forms scour hole under overflow weir, causes to form barometric gradient on riverbed, enhance
Vertical surface water and groundwater exchange process.
Working principle：The present invention arranges the structure of the double-deck overflow weir in river using block stone, and intermediate low two sides are high, makes water
From overcurrent among river in adfluxion, the water velocity of river two sides is reduced, the shear stress at riverbank is reduced, to protect river
Bank prevents water erosion.The double-deck arcuate structure has shared river water energy dissipation, reduces the down-cutting in river, while in riverbed
Upper manufacture barometric gradient enhances surface water and groundwater exchange process.
Specifically, overflow weir is made of inside and outside two layers of arc block stone overflow weir with dam abutment, overflow weir structure is upstream raised
It is arc-shaped, effectively to transfer force to dam abutment, prevent from being washed destruction when water flow is larger.Low both sides are high among overflow weir, make
Streamflow concentration is flowed through from overflow weir middle, is increased the flow velocity in the middle part of river, is reduced river two sides flow velocity, therefore subtract
Lack the shear stress at riverbank, prevents riverbank silt from being degraded by water flow.When river is arranged, the structure is whole symmetrical across river
Arrangement, dam abutment side insertion riverbank, structure high spot are the direction that meets water, and water flow can incision two differences of generation after overflow weir
The scour hole of depth and range, while stair-stepping barometric gradient is formed on the two sides riverbed of the double-deck overflow weir, it promotes vertical
It is exchanged to surface water and groundwater.The double-deck overflow weir has raised upstream water level, slows down upper river than drop, delays to corrode, simultaneously
Midchannel flow velocity is fast, and taking away silt prevents from depositing.The double-deck arc overflow weir structure has shared the kinetic energy that head decline generates, and subtracts
The down-cutting in the downstream little Yan, while the water-head in weir upstream and downstream forms barometric gradient on riverbed.Surface water is upper
The big region of trip pressure enters body of groundwater, returns river in the small region of downstream pressure, therefore the structure can greatly enhance river
Surface water and groundwater exchange process in road system.A large amount of dissolved oxygens, nutriment and pollutant enter riverbed bottom with surface water
The physical chemistry bioprocess of large amount of complex occurs under the microorganism catalysis of streambed substrate for matter, completes the nutriments such as carbon, nitrogen
Transport And Transformation process and pollutant decomposable process, realize the purification of river water quality.Weir two sides upstream flow rate is relatively slow, is aquatic
Biological existence, breed, taking refuge provides good habitat, while weir in the middle part of it is lower, do not influence aquatile in upstream and downstream from
By migrating.
Beneficial effect：Compared with prior art, the present invention has the following advantages that：It (1) being capable of effective protection structure upstream and downstream
Locate river two sides, prevents river channel erosion bring silt from degrading and bank slope collapse.(2) present invention not only avoids conventional curing river
Method isolate surface water and groundwater system bring ecological disruption, enhance the connectivity of surface water and groundwater instead, can
The effective protection natural river course ecosystem enhances the ability of the river self-purification, alleviates water pollution.(3) present invention can be aquatile
It survives, breed, taking refuge provides good habitat, further protection river channel ecology system.(4) material of the present invention is only block
Stone, construction of conveniently gathering materials on the spot, arrangement are limited less by regional condition, and low in cost, construction speed is fast, and required maintenance is few, structure
Service life is long.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is horizontal section schematic diagram of the invention；
Fig. 3 is Watershed Scale layout drawing of the invention.
Specific embodiment
As shown in Figure 1 and Figure 2, the double-deck arc riverbed restoration of the ecosystem structure is made of 3 parts, respectively outer layer overflow weir, interior
Layer overflow weir and rubble dam shoulder 4.Outer layer overflow weir is arc-shaped to upper river protrusion, and entire length is 2~3 times of river width, outer layer
The angle on overflow weir two sides and riverbank is 20 °~30 °.Outer layer overflow weir inlayed by the block stone of different-diameter against water (flow) direction and
At 2 diameter of medium-small diameter block stone is 30cm, is arranged in and meets water (flow) direction, is embedded in the major diameter block stone 1 that diameter is 50cm and stitches
In gap.Short both sides are high among overflow weir, and arc heights of roofs lowest part is the 1/2 of the common water level in river, and two sides gradually increase, and arrive close
Weir height is slightly below the common water level in river at dam abutment 4.Internal layer overflow weir is arranged in outer layer overflow weir downstream, is apart at two weir arc tops
The 1/3 of river width length is inlayed by the block stone 3 that diameter is 40cm, and same intermediate short both sides are high, and arc heights of roofs lowest part is river
The 1/3 of the common water level in road, two sides gradually increase, and are slightly below the common water level in river to weir height is controlled at dam abutment 4.Two layers of overflow
Weir is connected with dam abutment 4, and dam abutment 4 is made of the block stone that diameter is 60cm to 100cm, riverbank is extended vertically into, with outer layer overflow weir
Arcuate structure two-arm angle is 110 °~120 °.Under current scour effect, scour hole 5 will form between two layers of overflow weir, and it is interior
Layer overflow weir downstream also will form scour hole 6, and forming barometric gradient on riverbed causes vertical surface water to exchange along undercurrent
Path 7, which is introduced into, then leaves streambed substrate.
It is continuously arranged as shown in figure 3, structure of the invention is spaced suitable distance in river, can enhance ground in large scale
Undercurrent exchange interaction between table water and underground water, realizes the restoration of the ecosystem of Watershed Scale.Arcuate structure can produce current scour
Raw power is transmitted to dam abutment, and dam abutment protrudes into riverbank, enhances the ability for resisting current scour, is conducive to maintain the steady of structure itself
It is qualitative.
Claims (6)
1. a kind of bilayer arc riverbed restoration of the ecosystem structure, it is characterised in that：Including outer layer overflow weir, internal layer overflow weir and block stone
Dam abutment, the internal layer overflow weir and outer layer overflow weir are arc-shaped to upper river protrusion, and internal layer overflow weir is in outer layer overflow weir
Downstream, the intermediate low both sides of two layers of overflow weir are high, and are connected with rubble dam shoulder.
2. bilayer arc riverbed restoration of the ecosystem structure according to claim 1, it is characterised in that：The outer layer overflow weir is long
Spending is 2~3 times of river width, and the angle on outer layer overflow weir two sides and riverbank is 20 °~30 °.
3. bilayer arc riverbed restoration of the ecosystem structure according to claim 1, it is characterised in that：The reparation structure is in river
It is spaced suitable distance in road continuously to arrange, enhances the undercurrent exchange interaction between surface and ground water in large scale, realizes
The restoration of the ecosystem of Watershed Scale.
4. bilayer arc riverbed restoration of the ecosystem structure according to claim 1, it is characterised in that：The outer layer overflow weir by
Different-diameter block stone is inlayed, and internal layer overflow weir is inlayed by equal diameter block stone.
5. bilayer arc riverbed restoration of the ecosystem structure according to claim 1, it is characterised in that：The rubble dam shoulder is vertical
Riverbank is protruded into, is 110 °~120 ° with outer layer overflow weir arcuate structure two-arm angle.
6. bilayer arc riverbed restoration of the ecosystem structure according to claim 1, it is characterised in that：The outer layer overflow weir and
Internal layer overflow weir raises upstream water level, forms scour hole under overflow weir, causes to form barometric gradient on riverbed, enhances vertical
Surface water and groundwater exchange process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677682.8A CN108824365B (en) | 2018-06-27 | 2018-06-27 | Double-deck arc riverbed ecological remediation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810677682.8A CN108824365B (en) | 2018-06-27 | 2018-06-27 | Double-deck arc riverbed ecological remediation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108824365A true CN108824365A (en) | 2018-11-16 |
| CN108824365B CN108824365B (en) | 2020-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810677682.8A Expired - Fee Related CN108824365B (en) | 2018-06-27 | 2018-06-27 | Double-deck arc riverbed ecological remediation structure |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593222A (en) * | 2019-09-05 | 2019-12-20 | 中国电建集团北京勘测设计研究院有限公司 | Curve overflow weir structure of bank spillway |
| CN112942356A (en) * | 2021-03-18 | 2021-06-11 | 汪清明 | River course ecological management recovery system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090290936A1 (en) * | 2005-07-08 | 2009-11-26 | Underwood Keith R | Regenerative stormwater conveyance system and method |
| CN103195027A (en) * | 2013-04-24 | 2013-07-10 | 清华大学 | Stepped weir for straight river channel |
-
2018
- 2018-06-27 CN CN201810677682.8A patent/CN108824365B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090290936A1 (en) * | 2005-07-08 | 2009-11-26 | Underwood Keith R | Regenerative stormwater conveyance system and method |
| CN103195027A (en) * | 2013-04-24 | 2013-07-10 | 清华大学 | Stepped weir for straight river channel |
Non-Patent Citations (2)
| Title |
|---|
| 夏继红等: ""河岸带潜流层动态过程与生态修复"", 《水科学进展》 * |
| 林俊强等: ""弯曲河岸侧向潜流交换试验"", 《水科学进展》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110593222A (en) * | 2019-09-05 | 2019-12-20 | 中国电建集团北京勘测设计研究院有限公司 | Curve overflow weir structure of bank spillway |
| CN112942356A (en) * | 2021-03-18 | 2021-06-11 | 汪清明 | River course ecological management recovery system |
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| Publication number | Publication date |
|---|---|
| CN108824365B (en) | 2020-07-14 |
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Inventor after: Chen Xiaobing Inventor after: Yuan Yue Inventor after: Liu Dongsheng Inventor before: Chen Xiaobing Inventor before: Yuan Yue |
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Granted publication date: 20200714 |