CN101570967B - Fish way with ovoid fish-passing holes - Google Patents
Fish way with ovoid fish-passing holes Download PDFInfo
- Publication number
- CN101570967B CN101570967B CN2009100993723A CN200910099372A CN101570967B CN 101570967 B CN101570967 B CN 101570967B CN 2009100993723 A CN2009100993723 A CN 2009100993723A CN 200910099372 A CN200910099372 A CN 200910099372A CN 101570967 B CN101570967 B CN 101570967B
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- fish
- fish pass
- avette
- ovoid
- pass
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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
- Y02A40/60—Ecological corridors or buffer zones
Abstract
The invention discloses a fish way with ovoid fish-passing holes which are formed on the channel partitioning board of the fish way, wherein, each ovoid fish-passing hole comprises a circular first half part and an elliptic second half part; and the diameter of the first half part is equal to the minor axis length of the second half part. The invention has the advantages of simple structure, easy manufacture, convenient maintenance, high economic efficiency and practicability and good hydraulic characteristics; and the invention can generate the flow structure for fishes to migrate.
Description
Technical field
The present invention relates to a kind of fish pass with avette fish pass.
Technical background
Our province coastal species aboundresources, migration fishes are numerous, and as hilsa herring, tapertail anchovy, perch, sole, silverfish etc., these fish require to trace back and lay eggs or forage fattening in river to inland river, the lake.After tide-block sluice built up, the upstream of lock became fresh water environment, and freshwater fish (black carp, grass carp, silver carp, bighead, carp, crucian etc.) is often dashed to lock along with sluicing, but dies from the salt water because of gate has blocked the route that returns.For the migration passage of linking up fish, keep diversity of organism, in the tide-block sluice hinge, fish pass is set usually, to reach the purpose of water resources development and ecological environment harmonious development.
Fish pass is the artificial tank of confession under directions fish migration by sluice or dam.The habit of tracing back of fish is mainly considered in the design of fish pass.In the downstream of gate dam, fish often rely on the fish pass that is drawn into of current.Fish overcome flow velocity by self strength and trace back trip to the upstream in fish pass.Fish pass is made up of import, groove body, outlet and attracting water charging system.It is steady that import is arranged in current more, and the bank or the power station of certain depth of water are arranged, near the overfall dam outlet.Groove body cross section commonly used is a rectangle, with dividing plate the water-head of tank upstream and downstream is divided into several little steps, plate is provided with fish pass, utilizes water cushion, liquidates and spread along journey frictional resistance, current and eliminate excess energy, and fish pass commonly used is rectangle or perps.Investigate the fish object excessively by lock, dam, drafting design and operation water level and design current velocity etc. is the main foundation of determining baffle arrangement, fish pass form and size etc.Outlet should be near the bank, and current are smooth-going, and and overfall dam or power station import between leave enough distances, taken to the downstream by current again in order to avoid cross the fish on dam.
But existing statistics shows, in the fish pass that the whole world has been built up, fish can trace back the fish pass that passes through of trip still not enough half, this is that the shoal of fish is benefited from the tail flow field that leading fish forms when swimming because fish are traceed back in groups, current flow through rectangle or the perps fish pass then can't produce this ecological friendly fluidal texture, and the number of fish school that causes the trip of tracing back to be passed through reduces.
Summary of the invention
For overcoming the wake flow that the leading fish of can't simulating of prior art produces, the shortcoming that the number of fish school of passing through is few the invention provides the wake flow that a kind of trip of can the leading fish of simulation tracing back produces, the fish pass with avette fish pass that the swimming fish group that traces back is benefited.
Fish pass with avette fish pass, it is characterized in that: the dividing plate of fish pass groove body is provided with avette fish pass, described avette fish pass comprises the second half ones of rounded the first half ones and ovalize, and the diameter of described the first half ones equates with the minor axis length of described the second half ones.
Technical conceive of the present invention is: the fish You Shike that traces back in groups is benefited from the wake flow that leading fish produces, if current produce fish compliance wake flow when flowing through fish pass, then helps its migration greatly.Based on most of fish shape of cross sections is avette, fish pass is designed to avette, ecological water force characteristic when taking into full account the migration of fish own, simulate the wake flow that leading fish is produced, the guiding migration shoal of fish is traceed back by fish pass smoothly and lays eggs or forage fattening in river to inland river, the lake, keep upstream water system diversity of organism, promote water resources development and ecological environment harmonious development.
That the present invention has is simple in structure, be easy to make, be convenient to safeguard, economical and practical, hydraulic characteristic(s) is excellent, can produce the advantage of the required fluidal texture of fish migration.
Description of drawings
Fig. 1 is a schematic diagram of the present invention
The specific embodiment
With reference to accompanying drawing, further specify the present invention:
Fish pass with avette fish pass, the dividing plate of fish pass groove body is provided with avette fish pass 1, described avette fish pass 1 comprises the second half ones 12 of rounded the first half ones 11 and ovalize, and the diameter of described the first half ones 11 equates with the minor axis length of described the second half ones 12.
Avette fish pass recently characterizes fish pass by the aperture feature, supposes that the radius of the first half ones is r, and the length of the semi-minor axis of the second half ones is that the length of b, major semiaxis is a, and the aperture aspect ratio is e, then
Technical conceive of the present invention is: the fish You Shike that traces back in groups is benefited from the wake flow that leading fish produces, if current produce fish compliance wake flow when flowing through fish pass, then helps its migration greatly.Based on most of fish shape of cross sections is avette, fish pass is designed to avette, ecological water force characteristic when taking into full account the migration of fish own, simulate the wake flow that leading fish is produced, the guiding migration shoal of fish is traceed back by fish pass smoothly and lays eggs or forage fattening in river to inland river, the lake, keep upstream water system diversity of organism, promote water resources development and ecological environment harmonious development.
The present invention uses and not only is confined to fish pass, can also be applied in other the fish pass structure.
The described content of this manual embodiment only is enumerating the way of realization of inventive concept; protection scope of the present invention should not be regarded as only limiting to the concrete form that embodiment states, protection scope of the present invention also reach in those skilled in the art conceive according to the present invention the equivalent technologies means that can expect.
Claims (1)
1. the fish pass that has avette fish pass, it is characterized in that: the dividing plate of fish pass groove body is provided with avette fish pass, described avette fish pass comprises the second half ones of rounded the first half ones and ovalize, and the diameter of described the first half ones equates with the minor axis length of described the second half ones.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100993723A CN101570967B (en) | 2009-06-04 | 2009-06-04 | Fish way with ovoid fish-passing holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100993723A CN101570967B (en) | 2009-06-04 | 2009-06-04 | Fish way with ovoid fish-passing holes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101570967A CN101570967A (en) | 2009-11-04 |
| CN101570967B true CN101570967B (en) | 2011-01-05 |
Family
ID=41230431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100993723A Expired - Fee Related CN101570967B (en) | 2009-06-04 | 2009-06-04 | Fish way with ovoid fish-passing holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101570967B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736254B (en) * | 2019-02-22 | 2023-10-24 | 长江勘测规划设计研究有限责任公司 | High dam comprehensive fish passing facility and fish passing method thereof |
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2009
- 2009-06-04 CN CN2009100993723A patent/CN101570967B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101570967A (en) | 2009-11-04 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20130604 |