CN105200965A - Structure for providing ecological flow of downstream river reach of hydraulic and hydroelectric engineering - Google Patents
Structure for providing ecological flow of downstream river reach of hydraulic and hydroelectric engineering Download PDFInfo
- Publication number
- CN105200965A CN105200965A CN201510679056.9A CN201510679056A CN105200965A CN 105200965 A CN105200965 A CN 105200965A CN 201510679056 A CN201510679056 A CN 201510679056A CN 105200965 A CN105200965 A CN 105200965A
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- downstream
- cofferdam
- upstream
- diversion
- diversion tunnel
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- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 2
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The invention discloses a structure for providing ecological flow of a downstream river section of a hydraulic and hydroelectric engineering, which comprises an engineering dam, wherein the engineering dam divides a river into an upstream river section and a downstream river section, an upstream cofferdam and a downstream cofferdam are respectively arranged at the upstream and the downstream of the engineering dam, a diversion tunnel is arranged between the upstream river section and the downstream river section, a diversion inlet of the diversion tunnel is arranged at the upstream river section and is arranged at the upstream of the upstream cofferdam, a diversion outlet is arranged at the downstream river section and is arranged at the downstream of the downstream cofferdam, and a water diversion channel is arranged between the diversion tunnel and the downstream cofferdam. The invention can ensure the ecological flow required by the river reach between the downstream cofferdam and the diversion tunnel outlet, and avoid causing a dehydrated river reach; the structure has the advantages of small risk, simplicity, practicability, convenience, practicability and low cost, can not leave the defects of the permanent building, and is worthy of popularization.
Description
Technical field
The present invention relates to Hydraulic and Hydro-Power Engineering technical field, be specifically related to a kind of structure that Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow is provided.
Background technology
In recent years along with China's improving constantly Hydraulic and Hydro-Power Engineering environmental protection requirement, letting out ecological flow problem under reservoir engineering is the emphasis that environmental protection authorities pay close attention to.Rely on stage cofferdam method or Diversion Tunnel water conservancy diversion during Construction for Hydroelectric Project, dehydration section generally can not be caused to subtract dehydration.Also have a lot about Hydraulic and Hydro-Power Engineering retaining phase and run duration by the scheme of letting out ecological flow under Diversion Tunnel at present, when such as (1) buries the steel pipe that discharges water, the shutoff of (2) Diversion Tunnel gate underground below Diversion Tunnel base plate, gatage, (3) arrange hole and electric butterfly valve on water conservancy diversion outlet structure escape works steel-slag sand, or open regulating gate aperture etc. by import steel-slag sand local, the common feature of these schemes, exactly by letting out required flow under diversion tunnel, can effectively meet downstream ecology water demand.Find in engineering practice, limit by conditions such as section, engineering place landform, geology, part Hydraulic and Hydro-Power Engineering Diversion Tunnel outlet distance downstream cofferdam is far away, distance can reach hundreds of rice and even go up km, this just easily causes the section between downstream cofferdam to Diversion Tunnel outlet area to occur dehydrating phenomena, cause to this section aquatic ecological environment and have a strong impact on, but this problem is often out in the cold, must attract great attention.
Summary of the invention
The present invention aims to provide a kind of structure providing Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow, and between downstream cofferdam to the Diversion Tunnel may ignored to solve prior art exports, section takes off water problem, and it is convenient and easy that it has enforcement, the advantages such as science is reliable.
The present invention is achieved by following technical solution:
A kind of structure that Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow is provided, comprise engineering dam, river is divided into upper reach and lower reache by engineering dam, upstream cofferdam and downstream cofferdam is respectively arranged with at engineering dam upstream and downstream, diversion tunnel is provided with between upper reach and lower reache, the directed fluid inlet of diversion tunnel is placed in upper reach and is placed in the upstream of upstream cofferdam, diversion outlet is placed in lower reache and is placed in the downstream of downstream cofferdam, is provided with water-drawing channel between described diversion tunnel and downstream cofferdam.
The entrance elevation of described water-drawing channel is lower than the diversion tunnel Bottom Altitude at this place, and water-drawing channel entrance elevation is higher than outlet elevation.
The invention has the beneficial effects as follows:
Compared with prior art, the structure that Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow is provided provided by the invention, the ecological flow needed for section between downstream cofferdam to diversion tunnel outlet can be ensured, avoid causing dehydration section, solve section between downstream cofferdam that current part engineering may ignore to diversion tunnel outlet and take off water problem; And this structure risk is little, simple, convenient and practical, with low cost, the effect arrived very much can be played, and lower defect can not be left over to permanent building self, be worthy to be popularized.
Accompanying drawing explanation
Fig. 1 is arrangement diagram of the present invention;
In figure: 1-engineering dam, 2-upstream cofferdam, 3-downstream cofferdam, 4-directed fluid inlet, 5-diversion tunnel, 6-diversion outlet, 7-water-drawing channel, 8-upper reach, 9-lower reache.
Detailed description of the invention
Below in conjunction with accompanying drawing, technical scheme of the present invention is described further, but described in required protection domain is not limited to;
As shown in Figure 1, the structure that Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow is provided provided by the invention, comprise engineering dam 1, river is divided into upper reach 8 and lower reache 9 by engineering dam 1, upstream cofferdam 2 and downstream cofferdam 3 is respectively arranged with at engineering dam 1 upstream and downstream, diversion tunnel 5 is provided with between upper reach 8 and lower reache 9, the directed fluid inlet 4 of diversion tunnel 5 is placed in upper reach 8 and is placed in the upstream of upstream cofferdam 2, diversion outlet 6 is placed in lower reache 9 and is placed in the downstream of downstream cofferdam 3, water-drawing channel 7 is provided with between described diversion tunnel 5 and downstream cofferdam 3.
The entrance elevation of described water-drawing channel 7 is lower than diversion tunnel 5 Bottom Altitude at this place, and water-drawing channel 7 entrance elevation is higher than outlet elevation.
As shown in Figure 1, technical scheme of the present invention is mainly during construction diversion, or when still letting out ecological flow 5 times by diversion tunnel after directed fluid inlet 4 times lock retainings, by the water-drawing channel 7 built in advance, the water that diversion tunnel 5 is released is caused downstream cofferdam 3 place, flow into river course again, release to the dehydration section in lower reache 9 ecological flow, the conveyance capacity of water-drawing channel 7 should meet the minimum ecological flow requirement of dehydration required for section.The entrance location of water-drawing channel 7 should be determined by elevation computation, or be arranged in diversion outlet 6 place, or be arranged in the inner a certain position of diversion tunnel 5, but diversion tunnel 5 Bottom Altitude of the input elevation of drainage channel 7 lower than this place should be guaranteed, and make the input elevation of water-drawing channel 7 higher than outlet elevation, namely the gradient of water-drawing channel 7 is contrary with the gradient in river course.
Owing to have employed technique scheme, during construction period tunnel diversion, and after diversion tunnel 5 times lock retainings still by letting out the ecological flow needed for lower reache under Diversion Tunnel time, water-drawing channel 7 is utilized the ecological flow needed for lower reache 9 to be caused downstream cofferdam 3 place of diversion outlet 6 upstream, flow into river course again, thus ensure that the ecological flow between downstream cofferdam 3 to diversion outlet 6 needed for section, avoid causing dehydration section, solve this problem that current part engineering may be ignored.
Claims (2)
1. one kind provides the structure of Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow, comprise engineering dam (1), river is divided into upper reach (8) and lower reache (9) by engineering dam (1), upstream cofferdam (2) and downstream cofferdam (3) is respectively arranged with at engineering dam (1) upstream and downstream, diversion tunnel (5) is provided with between upper reach (8) and lower reache (9), the directed fluid inlet (4) of diversion tunnel (5) is placed in upper reach (8) and is placed in the upstream of upstream cofferdam (2), diversion outlet (6) is placed in lower reache (9) and is placed in the downstream of downstream cofferdam (3), it is characterized in that: between described diversion tunnel (5) and downstream cofferdam (3), be provided with water-drawing channel (7).
2. the structure that Hydraulic and Hydro-Power Engineering downstream lower reache ecological flow is provided according to claim 1, it is characterized in that: the entrance elevation of described water-drawing channel (7) is lower than diversion tunnel (5) Bottom Altitude at this place, and water-drawing channel (7) entrance elevation is higher than outlet elevation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679056.9A CN105200965B (en) | 2015-10-19 | 2015-10-19 | Structure for providing ecological flow of downstream river reach of hydraulic and hydroelectric engineering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510679056.9A CN105200965B (en) | 2015-10-19 | 2015-10-19 | Structure for providing ecological flow of downstream river reach of hydraulic and hydroelectric engineering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105200965A true CN105200965A (en) | 2015-12-30 |
| CN105200965B CN105200965B (en) | 2018-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510679056.9A Active CN105200965B (en) | 2015-10-19 | 2015-10-19 | Structure for providing ecological flow of downstream river reach of hydraulic and hydroelectric engineering |
Country Status (1)
| Country | Link |
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| CN (1) | CN105200965B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894184A (en) * | 2018-07-27 | 2018-11-27 | 中国电建集团成都勘测设计研究院有限公司 | Extra-high dam reservoir filling method |
| CN116239248A (en) * | 2023-01-09 | 2023-06-09 | 宁夏大学 | Dry area brackish water evaporation and utilization system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1021537C2 (en) * | 2002-09-26 | 2004-03-29 | Witteveen & Bos Raadgevende In | Pumping station, has barrier located inside outlet pipe connected to higher water level |
| CN103290804A (en) * | 2013-06-05 | 2013-09-11 | 中国水电顾问集团贵阳勘测设计研究院 | Method and structure for providing downstream ecological flow after gate locking of stream guidance water release structure |
| CN203594007U (en) * | 2013-11-12 | 2014-05-14 | 中国水电顾问集团成都勘测设计研究院有限公司 | Power station hub downstream water supply structure |
| CN205100175U (en) * | 2015-10-19 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A structure for providing ecological flow in downstream reaches of hydropower projects |
-
2015
- 2015-10-19 CN CN201510679056.9A patent/CN105200965B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1021537C2 (en) * | 2002-09-26 | 2004-03-29 | Witteveen & Bos Raadgevende In | Pumping station, has barrier located inside outlet pipe connected to higher water level |
| CN103290804A (en) * | 2013-06-05 | 2013-09-11 | 中国水电顾问集团贵阳勘测设计研究院 | Method and structure for providing downstream ecological flow after gate locking of stream guidance water release structure |
| CN203594007U (en) * | 2013-11-12 | 2014-05-14 | 中国水电顾问集团成都勘测设计研究院有限公司 | Power station hub downstream water supply structure |
| CN205100175U (en) * | 2015-10-19 | 2016-03-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A structure for providing ecological flow in downstream reaches of hydropower projects |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894184A (en) * | 2018-07-27 | 2018-11-27 | 中国电建集团成都勘测设计研究院有限公司 | Extra-high dam reservoir filling method |
| CN116239248A (en) * | 2023-01-09 | 2023-06-09 | 宁夏大学 | Dry area brackish water evaporation and utilization system |
| CN116239248B (en) * | 2023-01-09 | 2024-11-01 | 宁夏大学 | Dry area brackish water evaporation and utilization system |
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| Publication number | Publication date |
|---|---|
| CN105200965B (en) | 2018-07-03 |
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