CN109518662A - A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration - Google Patents
A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration Download PDFInfo
- Publication number
- CN109518662A CN109518662A CN201811455509.XA CN201811455509A CN109518662A CN 109518662 A CN109518662 A CN 109518662A CN 201811455509 A CN201811455509 A CN 201811455509A CN 109518662 A CN109518662 A CN 109518662A
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- Prior art keywords
- tailwater channel
- slope
- river
- base slope
- tailwater
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- 241000251468 Actinopterygii Species 0.000 title claims abstract description 45
- 230000005012 migration Effects 0.000 title claims abstract description 11
- 238000013508 migration Methods 0.000 title claims abstract description 11
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 11
- 230000008676 import Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 230000002776 aggregation Effects 0.000 description 2
- 238000004220 aggregation Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- 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
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
- E02B8/085—Devices allowing fish migration, e.g. fish traps
-
- 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
- Y02A40/60—Ecological corridors or buffer zones
Abstract
The invention discloses a kind of powerhouse of hydropower station tailwater channel base slope structures conducive to fish migration, tailwater channel base slope is using the gradual change base slope for being inclined to workshop, the tailwater channel base slope gradient is gradually increased from river upstream tailwater channel bank slope to river downstream tailwater channel bank slope, and in river downstream, tailwater channel bank slope forms the flow field condition of suitable fish collection.Tailwater channel base slope is being 1:4.5 close to the river upstream tailwater channel bank slope position gradient, is being 1:3 close to the river downstream tailwater channel bank slope position gradient, position is gradually increased from 1:4.5~1:3 among tailwater channel base slope.The single base slope of tailwater channel tendency workshop is changed to the gradual change base slope of tendency workshop by the present invention, constrain flow path in workshop tailwater channel, its mainstream is set to be biased to river upstream side, localized raised river downstream side tailwater channel base slope then increases the position flow rate of water flow simultaneously, so as to improve tailwater channel flow field condition, be conducive to fish to assemble at river downstream side tailwater channel base slope position, open up fish pass import in corresponding position, fish effect can be effectively improved.
Description
Technical field
The present invention relates to hydraulic and hydroelectric engineering flow control structures, more particularly, to a kind of power station conducive to fish migration
Workshop tailwater channel base slope structure.
Background technique
Fish pass structure is mostly arranged in hydroelectric project at present, and fish pass is a kind of relatively conventional mode, the general cloth of fish pass import
It sets in river two sides, entrance requires to have certain depth of water, water flow stationary, flow velocity to be suitble to, is easily found by fish, is conducive to fish
Assemble.Power plant tail water canal near exit flow rate of water flow is larger compared with flow velocity of river, is conducive to attract fish upstream, is one common
Position.
Power station operation is according to dispatching of power netwoks, and there are a variety of generator operation operating conditions, a machine power generation, more machine hairs often occurs
Situations such as electric, fluidised form is complicated in tailwater channel, and flow and flow rate is changeable, causes down to let out the unstable of flow-shape and flow velocity, unfavorable
In the uplink of fish.Powerhouse of hydropower station tailwater channel base slope is generally unidirectional slope, and water flow a part is upstream returned in workshop tailwater channel
Stream, a part are downstream spread, and HYDRODYNAMIC CONDITION RELATING TO is complicated, flow field disorder, and the selection of fish pass entrance location is more difficult, cross fish effect
It is not satisfactory.
Summary of the invention
The technical problem to be solved by the present invention is to, the present invention to provide a kind of change tailwater channel base slope figure, adjustment tail water
The distribution of canal flow field, the powerhouse of hydropower station tailwater channel base slope conducive to fish migration for increasing river downstream side tailwater channel base slope flow velocity
Structure.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is that: a kind of power station conducive to fish migration
Workshop tailwater channel base slope structure, tailwater channel base slope is using the gradual change base slope of tendency workshop, and the tailwater channel base slope gradient is from river upstream
Tailwater channel bank slope to river downstream tailwater channel bank slope is gradually increased, and in river downstream, tailwater channel bank slope forms suitable fish collection
Flow field condition.
The tailwater channel base slope is being 1:4.5 close to the river upstream tailwater channel bank slope position gradient, close to river downstream
The tailwater channel bank slope position gradient is 1:3, and position is gradually increased from 1:4.5~1:3 among tailwater channel base slope.
The beneficial effects of the present invention are: the single base slope of tailwater channel tendency workshop is changed to the gradual change base slope of tendency workshop,
Flow path in workshop tailwater channel is constrained by engineering measure, its mainstream is made to be biased to river upstream side, while localized raised river
Downstream side tailwater channel base slope then increases the position flow rate of water flow, so as to improve tailwater channel flow field condition, is conducive to fish and exists
The aggregation of river downstream side tailwater channel base slope position, opens up fish pass import in corresponding position, can be effectively improved fish effect.
Detailed description of the invention
Fig. 1 is the schematic diagram of the powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration of the invention.
Fig. 2 is the sectional view of Fig. 1, A-A cross-sectional view.
Fig. 3 is specific embodiment attached drawing.
In figure: 1 --- tailwater channel base slope；2 --- workshop；3 --- river；4 --- river upstream tailwater channel bank slope；
5 --- river downstream tailwater channel bank slope；6 --- fish pass import.
Specific embodiment
Invention is further described in detail with reference to the accompanying drawings and detailed description:
As shown in Figs. 1-2, the powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration of the invention, tailwater channel base slope
1 using the gradual change base slope for being inclined to workshop 2, and 1 gradient of tailwater channel base slope is from river upstream tailwater channel bank slope 4 to river downstream tailwater channel
Bank slope 5 is gradually increased, and in river downstream, tailwater channel bank slope 5 forms the flow field condition of suitable fish collection.
It is preferred that the tailwater channel base slope 1 is being 1:4.5 close to the 4 position gradient of river upstream tailwater channel bank slope, close to river
The tailwater channel bank slope 5 position gradient in road downstream is 1:3, and the intermediate position of tailwater channel base slope 1 is gradually increased from 1:4.5~1:3.
The flow field position of the suitable fish collection of the formation of river downstream tailwater channel bank slope 5 is arranged in fish pass import 6, can improve
Cross fish effect, wherein 3 be river.
The present invention is on the unidirectional base slope figure of conventional tailwater channel, from river upstream tailwater channel bank slope to river downstream tailwater channel
Bank slope successive adjustment different location tailwater channel bottom board slope, forms it into the gradual change base slope of general inclination workshop.Gradual change base slope knot
Structure constrains water flow in workshop tailwater channel and imports river path, so that its mainstream is biased to river upstream side, while increasing river downstream side
Tailwater channel base slope position channel water stream flow velocity forms the flow field condition different under conventional tailwater channel design.It is traced back in fish
When to tailwater channel, the High Velocity Area by tailwater channel flow field, which is formed, to be influenced, and is assembled at river downstream tailwater channel bank slope position,
Corresponding position opens up fish pass import, can be effectively improved fish effect
As shown in figure 3, using the specific work of the powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration of the invention
Journey, by adopting the above technical scheme after the water flow gushed out from workshop, be biased to river upstream by the effect mainstream of tailwater channel gradual change base slope
Tailwater channel bank slope is influenced accordingly by the tailwater channel base slope increase gradient, in river downstream tailwater channel bank slope region overcurrent
Section narrows, and forms acceleration water flow, forms the water-flow equation that flow velocity is gradually increased from river upstream to downstream in tailwater channel,
Mainstream upstream deviates, and High Velocity Area appears in river downstream bank slope, is formed and fish is stopped to continue to trace back high-velocity flow barrier, fish
Class is easy to assemble river downstream tailwater channel bank slope region, which opens up fish pass import, can effectively improve fish effect.
Base slope is gradually increased from river upstream to river downstream, and slope surface knot not parallel with stem is formed in the middle part of tailwater channel
Structure makes workshop tailwater channel current deflecting river upstream tailwater channel bank slope side, and river downstream side bank slope is formed in the middle part of tailwater channel
It is suitable for the flow condition of fish collection, the single base slope of tailwater channel tendency workshop is changed to the gradual change bottom of tendency workshop by the present invention
Slope is constrained in workshop tailwater channel by engineering measure and returns slot flow path, so that its mainstream is biased to river upstream side, while increasing river
Road downstream side tailwater channel base slope position channel water stream flow velocity forms the flow field condition different under conventional tailwater channel design,
When fish pass up to tailwater channel, when fish pass up to tailwater channel, the High Velocity Area by tailwater channel flow field, which is formed, to be influenced,
The aggregation of river downstream tailwater channel bank slope position, opens up fish pass import in corresponding position, can be effectively improved fish effect.
Embodiment described above is merely to illustrate technical idea and feature of the invention, in the art its object is to make
Technical staff it will be appreciated that the contents of the present invention and implement accordingly, patent model of the invention only cannot be limited with the present embodiment
It encloses, i.e., same changes or modifications made by all disclosed spirit are still fallen in the scope of the patents of the invention.
Claims (2)
1. a kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration, which is characterized in that tailwater channel base slope (1) uses
It is inclined to the gradual change base slope of workshop (2), tailwater channel base slope (1) gradient is from river upstream tailwater channel bank slope (4) to river downstream tail water
Canal bank slope (5) is gradually increased, and forms the flow field condition of suitable fish collection in river downstream tailwater channel bank slope (5).
2. being conducive to the powerhouse of hydropower station tailwater channel base slope structure of fish migration according to claim 1, which is characterized in that described
Tailwater channel base slope (1) is being 1:4.5 close to river upstream tailwater channel bank slope (4) the position gradient, close to river downstream tailwater channel
Bank slope (5) the position gradient is 1:3, and the intermediate position of tailwater channel base slope (1) is gradually increased from 1:4.5~1:3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811455509.XA CN109518662A (en) | 2018-11-30 | 2018-11-30 | A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811455509.XA CN109518662A (en) | 2018-11-30 | 2018-11-30 | A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109518662A true CN109518662A (en) | 2019-03-26 |
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|---|---|---|---|
| CN201811455509.XA Pending CN109518662A (en) | 2018-11-30 | 2018-11-30 | A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration |
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| CN (1) | CN109518662A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629727A (en) * | 2019-07-30 | 2019-12-31 | 福建省水利水电勘测设计研究院 | Hydraulic design method for novel bionic fishway at estuary |
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|---|---|---|---|---|
| KR20060000366A (en) * | 2004-06-28 | 2006-01-06 | 윤인수 | Method and apparatus for regulating flow rate and flow rate of fish |
| CN202323895U (en) * | 2011-11-18 | 2012-07-11 | 中国水电顾问集团成都勘测设计研究院 | Tail water channel structure for stepped hydro-junction |
| CN103835273A (en) * | 2014-03-24 | 2014-06-04 | 中国水利水电科学研究院 | Vertical slit type fishway rest pool |
| CN206220068U (en) * | 2016-11-11 | 2017-06-06 | 中国电建集团成都勘测设计研究院有限公司 | The many fish pass imports of distributing |
| CN108570973A (en) * | 2018-03-30 | 2018-09-25 | 四川大学 | A kind of slot type fish gathering cup adapting to high-head dam different water depth luffing |
| CN209669824U (en) * | 2018-11-30 | 2019-11-22 | 中国电建集团北京勘测设计研究院有限公司 | A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration |
-
2018
- 2018-11-30 CN CN201811455509.XA patent/CN109518662A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060000366A (en) * | 2004-06-28 | 2006-01-06 | 윤인수 | Method and apparatus for regulating flow rate and flow rate of fish |
| CN202323895U (en) * | 2011-11-18 | 2012-07-11 | 中国水电顾问集团成都勘测设计研究院 | Tail water channel structure for stepped hydro-junction |
| CN103835273A (en) * | 2014-03-24 | 2014-06-04 | 中国水利水电科学研究院 | Vertical slit type fishway rest pool |
| CN206220068U (en) * | 2016-11-11 | 2017-06-06 | 中国电建集团成都勘测设计研究院有限公司 | The many fish pass imports of distributing |
| CN108570973A (en) * | 2018-03-30 | 2018-09-25 | 四川大学 | A kind of slot type fish gathering cup adapting to high-head dam different water depth luffing |
| CN209669824U (en) * | 2018-11-30 | 2019-11-22 | 中国电建集团北京勘测设计研究院有限公司 | A kind of powerhouse of hydropower station tailwater channel base slope structure conducive to fish migration |
Non-Patent Citations (1)
| Title |
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| 杨平等: "《枕头坝一级水电站枢纽布置设计综述》", 《水力发电》, vol. 41, no. 8, pages 62 - 65 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110629727A (en) * | 2019-07-30 | 2019-12-31 | 福建省水利水电勘测设计研究院 | Hydraulic design method for novel bionic fishway at estuary |
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