CN115492062A - Spiral laminated fishway outlet structure suitable for large water level amplitude - Google Patents
Spiral laminated fishway outlet structure suitable for large water level amplitude Download PDFInfo
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- E—FIXED CONSTRUCTIONS
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- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
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Abstract
The invention provides a spiral laminated fishway outlet structure suitable for large water level amplitude, which comprises a spiral laminated fishway, a supporting base, a plurality of fishway outlets and an outlet gate, wherein the spiral laminated fishway is provided with a plurality of water level outlets; the supporting foundation is fixed on the side slope or the river bottom to support the spiral stacked fishway; the plurality of fishway outlets are positioned in the same direction of different layers of the outer wall of the spiral laminated fishway and correspond to different operating water levels; the other position of the lowest fishway outlet on the same layer is a water flow outlet of the spiral laminated fishway, the elevation of the water flow outlet is lower than that of the spiral laminated fishway, and the water flow outlet is connected with a matched fishway; a plurality of fishway exports same outlet gate of sharing, and the outlet gate is located the outside that a plurality of fishway exported, and the outlet gate can remove in the direction of height, realizes carrying out unified opening and closing control to a plurality of fishway exports. The invention does not need to control a plurality of gates in a linkage way, realizes the opening and closing control of a plurality of fishway outlets by controlling one gate, and is suitable for the upstream large-water-level variable-amplitude operating environment.
Description
Technical Field
The invention relates to the field of design and construction of hydraulic buildings, in particular to a spiral laminated fishway outlet structure suitable for large water level amplitude variation.
Background
As a global hydropower large country, china builds a large number of water conservancy and hydropower projects in various watersheds throughout the country, and dams built in the projects play a great role in flood control, irrigation, power generation, water supply, shipping and the like and cannot avoid influences on the ecology, particularly the blocking influence on fish migration channels. Therefore, it is common to rebuild the fish migration channel and communicate the upstream and downstream fish by building the fish way. Water flow enters the fishway from the upstream and flows out of the fishway from the downstream, but migratory fishes enter the fishway from the downstream and flow out of the fishway from the upstream, so that the upstream water inlet of the fishway is called as a fishway outlet, and the downstream water outlet of the fishway is called as a fishway inlet.
For the purpose of fish passage, the fishway usually needs to meet certain water depth requirements and certain flow velocity requirements. However, for projects with large upstream water level amplitude, under the condition of water level change, the water depth and the flow speed of the fishway are affected, and the fish passing efficiency of the fishway is affected. How to improve the capability of the fishway outlet to adapt to water level change is a technical problem at home and abroad. According to the requirements of the fishway design guide (SL 609-2013) of the hydraulic and hydro-power engineering, when the upstream water level in the main fish season has large amplitude, a plurality of fishway outlets with different positions and elevations are arranged. Therefore, the method for improving the capability of the fishway outlet to adapt to the water level change at present mainly arranges a plurality of outlets between the lowest water level and the highest water level of the fishway along the way, but the traditional method has the following disadvantages:
1) For projects with large upstream water level amplitude, the fishway between the lowest water level outlet and the highest water level outlet is long in length, the arrangement occupies a large area, and for dams in canyon terrains, the outlet section often needs large-scale slope excavation and is difficult to arrange;
2) In order to prevent the upstream water body from overflowing into the fishway to influence the operation of the fishway, the elevation of the side wall at the upstream section of the fishway is required to be above the highest upstream water level, and the side wall engineering quantity is large;
3) A plurality of fishway outlets are distributed dispersedly, a plurality of sets of gates and opening and closing systems need to be arranged for combined control, and the overall structure and the control logic are complex.
The invention provides a fishway system for engineering with larger upstream water level amplitude on the publication of China patent publication No. CN 106592541B, publication of 2018, 11 and 13, and the application discloses a fishway system with small excavation amount and small construction concrete engineering amount. The novel gate valve has the defects of large occupied area, complex integral control structure and high fault risk due to the fact that the novel gate valve comprises a plurality of gates. The invention discloses a fishway radius-variable spiral tower type multi-inlet or multi-outlet structure which is named as a fishway radius-variable spiral tower type multi-inlet or multi-outlet structure in China patent publication No. CN 110468805B, published 2021, 4 and 23. The novel gate valve has the advantages that a plurality of gates are required to be arranged, the gate opening and closing and transportation equipment needs to control and hoist the plurality of gates back and forth on the curved track to realize the switching of the opening and the closing of the inlet or the outlet, the control structure and the logic are complex, and the whole occupied area is large.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a spiral laminated fishway outlet structure suitable for large water level amplitude variation. The invention has small structural arrangement range and compact structure, does not need linkage control of a plurality of gates, realizes the opening and closing control of a plurality of fishway outlets by controlling one gate, and is suitable for upstream large-water-level variable-amplitude operation environment.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the utility model provides a range upon range of formula fishway exit structure spirals suitable for big water level becomes width of cloth which characterized in that: the device comprises a spiral stacked fishway, a supporting base, a plurality of fishway outlets and an outlet gate; the supporting foundation is fixed on the side slope or the river bottom to support the spiral stacked fishway; the plurality of fishway outlets are positioned in the same direction of different layers of the outer wall of the spiral laminated fishway and correspond to different operating water levels; the other position of the lowest fishway outlet on the same layer is a water flow outlet of the spiral laminated fishway, the elevation of the water flow outlet is lower than that of the spiral laminated fishway, and the water flow outlet is connected with a matched fishway; the plurality of fishway outlets share the same outlet gate, the outlet gate is positioned at the outer side of the plurality of fishway outlets, and the outlet gate can move in the height direction, so that the uniform opening and closing control of the plurality of fishway outlets is realized; and a top structure platform is arranged at the top of the spiral stacked fishway.
Further: the spiral laminated fishway outlet structure is integrally in a circular or rectangular structure.
And further: the spiral stacked fishway comprises a plurality of prefabricated structures which are sequentially spliced end to end in the height direction, and each prefabricated structure comprises a fishway outlet; the water outlet is arranged on a support foundation, a connection fishway is arranged on the support foundation, a first port for connecting the fishway is the water outlet, and a second port is connected with the prefabricated structure on the bottommost layer.
Further: an outlet gate slot is arranged on the spiral stacked fishway outlet structure, the outlet gate moves in the outlet gate slot, the outlet gate is connected with an outlet gate opening and closing device, and the outlet gate opening and closing device is arranged on the top structure platform; the exit gate slot is connected with the spiral stacked fishway, the supporting base and the outer side wall of the top structure platform.
And further: the height of the outlet gate is not lower than the distance between the fishway outlet bottom plate of the bottommost prefabricated structure and the fishway outlet top plate of the topmost prefabricated structure; the width of the exit gate slot is greater than the width of the fishway exit; the height of the outlet gate slot is not less than twice the height of the outlet gate.
Further: the angle difference between the direction of the water outlet and the direction of the fishway outlet is 75-105 degrees.
Further: the prefabricated structure comprises a fishway bottom plate, an outer wall and an inner wall, and the aspect ratio of the section of the prefabricated structure is 0.6 to 1.25; the inner wall is equipped with a plurality of open structure in the position department of hugging closely upper fishway bottom plate lower limb, and a plurality of open structure interval sets up on the inner wall, the fishway bottom plate is raised gradually to be the spiral setting.
And further: the opening structure is 0.1 to 0.4 time of the height of the outer wall, and the total opening length of the opening structure on the inner wall of the single-layer prefabricated structure is 30 to 60 percent of the length of the single-layer prefabricated structure.
And further: the length of the prefabricated structure is determined according to the gradient of the fishway bottom plate and the height difference of the bottom plate of the outlet of the fishway at the adjacent layer, and the calculation formula is as follows:
wherein the content of the first and second substances,lis the length of a single-layer spiral laminated fishway,hthe height difference of the bottom plate at the outlet of the fishway on the adjacent layer,
the slope of the fishway bottom plate;
the fish type and habit are determined according to the fish type and habit, and the ratio is 1.
Further: the top structure platform is higher than the highest flood control water level of upper reaches, and the bottom plate elevation of a plurality of fishway exports sets up according to actual fishway operation water level in grades.
Compared with the prior art, the invention has the following advantages and beneficial effects:
according to the invention, a spiral stacking arrangement mode is adopted, so that the multi-outlet centralized arrangement of the fishway is realized, the outlet structure of the fishway is compact, the problems of wide occupied area and high arrangement difficulty in dispersed arrangement are solved, the outer wall of the prefabricated structure is used as a water retaining breast wall, and a water retaining breast wall does not need to be additionally built for each outlet, so that the fishway is suitable for different water level change conditions; one gate is controlled by one set of fixed opening and closing equipment to realize the opening and closing control of a plurality of fishway outlets, and the control system has simple structure and logic and is convenient to operate and maintain. The invention is suitable for hydraulic engineering with large upstream water level amplitude, can be assembled by using a prefabricated structure according to the water level change in the actual engineering, and is beneficial to promoting the standardization of fishway design.
Drawings
Fig. 1 is a three-dimensional schematic diagram of a spiral laminated fishway outlet structure suitable for large water level amplitude variation.
Fig. 2 is a three-dimensional sectional view of a spiral laminated fishway exit structure suitable for large water level amplitude.
Fig. 3 is an exploded view of a spiral stacked fishway exit structure suitable for large water level amplitude variation according to the invention.
Fig. 4 is a three-dimensional schematic diagram of a spiral laminated fishway suitable for a spiral laminated fishway outlet structure with large water level amplitude.
Fig. 5 is a side view of a plurality of fishway outlet sides of a spiral laminated fishway outlet structure suitable for large water level amplitude variation.
Fig. 6 is a schematic diagram of different water level elevation control of the outlet gate of the spiral laminated fishway outlet structure suitable for large water level amplitude variation.
Reference numerals: 1-prefabricated structure, 2-supporting foundation, 3-fishway outlet, 4-outlet gate, 5-outlet gate groove, 6-outlet gate opening and closing equipment, 7-matched fishway, 8-water outlet, 9-top structure platform, 11-spiral laminated fishway, 12-connecting fishway, 13-fishway bottom plate, 14-outer wall, 15-inner wall and 16-opening structure; 17-a bottommost prefabricated structure; 18-top-most prefabricated structure.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in conjunction with specific examples, but it should be understood that the drawings are for illustrative purposes only and should not be construed as limiting the present invention; for the purpose of better illustrating the present embodiments, certain elements of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the invention.
The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.
As shown in fig. 1 to 6, a spiral laminated fishway exit structure suitable for large water level amplitude comprises a spiral laminated fishway 11, a supporting base 2, a plurality of fishway exits 3 and an exit gate 4; the supporting foundation 2 is fixed on a side slope or a river bottom to support the spiral stacked fishway 11; the plurality of fishway outlets 3 are positioned in the same direction of different layers of the outer wall of the spiral stacked fishway 11 and correspond to different operating water levels, and in the embodiment, the plurality of fishway outlets 3 are numbered as numbers F1, F2 and F3 from bottom to top; the other position of the lowest fishway outlet 3 on the same layer is a water flow outlet 8 of the spiral stacked fishway 11, the elevation of the water flow outlet 8 is lower than that of the spiral stacked fishway 11, and the water flow outlet 8 is connected with a matched fishway 7; the plurality of fishway outlets 3 share the same outlet gate 4, the outlet gate 4 is positioned at the outer side of the plurality of fishway outlets 3, and the outlet gate 4 can move in the height direction, so that the uniform opening and closing control of the plurality of fishway outlets 3 is realized; the top of the spiral stacked fishway 11 is provided with a top structure platform 9.
In this embodiment, the spiral laminated fishway 11 includes three layers of prefabricated structures 1, the fishway is a groove-type fishway, the cross section of the fishway is 1 meter (width) × 1.2 meters (height), a plurality of opening structures 16 with an interval of 1.5 meters are arranged on the inner wall of the lower edge of the upper floor, the opening height is 0.2 meter and the length is 1.5 meters, each layer of prefabricated structure 1 is provided with a fishway outlet 3, the width of the fishway outlet 3 is 1 meter and the height is 0.7 meter, so that the water flow in the spiral laminated fishway 11 cannot overflow from the opening structures 16 on the inner wall, and the direction of the fishway outlets 3 on each layer faces upstream; the size of the water outlet 8 is 1 m multiplied by 1 m, and the opening direction is tangential to the spiral stacked fishway 11.
The spiral laminated fishway outlet structure is integrally in a circular or rectangular structure. The circular spiral laminated fishway outlet structure is an optimal scheme, so that stable water flow in the fishway can be guaranteed, and fish can migrate conveniently. The whole body of the spiral stacked fishway outlet structure can also be a rectangular structure, but the corners are required to be subjected to fillet treatment, and the fillet radius is not more than half of the length of the short sides of the rectangle, so that the influence of the corners on the stability of water flow is reduced.
The spiral stacked fishway 11 comprises a plurality of prefabricated structures 1, the prefabricated structures 1 are sequentially spliced end to end in the height direction, and each prefabricated structure 1 comprises a fishway outlet 3; the rivers export 8 sets up on supporting foundation 2, supporting foundation 2 is the enclosed construction in the below of rivers export 8, is provided with on the supporting foundation 2 and links up fishway 12, and the first port that links up fishway 12 does rivers export 8, and the second port is connected with prefabricated construction 17 of bottom.
An outlet gate slot 5 is arranged on the spiral stacked fishway outlet structure, the outlet gate 4 moves in the outlet gate slot 5, the outlet gate 4 is connected with an outlet gate opening and closing device 6, and the outlet gate opening and closing device 6 is arranged on a top structure platform 9; the exit gate slot 5 is connected with the outer side walls of the spiral stacked fishway 11, the supporting base 2 and the top structure platform 9.
The outlet gate opening and closing device 6 automatically controls the position of the outlet gate 4 in the outlet gate groove 5 according to the operation water level, and realizes unified opening and closing control on the plurality of fishway outlets 3 through one outlet gate 4. The roof structure platform 9 is 330 metres high above the upstream maximum flood level (328 metres).
The top structure platform 9 is higher than the highest flood control water level of the upper reaches, and the bottom plate elevations of the plurality of fishway outlets 3 are arranged in a grading manner according to the actual fishway running water level.
The height of the outlet gate 4 is not lower than the distance between the bottom plate of the fishway outlet 3 of the bottommost prefabricated structure 17 and the top plate of the fishway outlet 3 of the topmost prefabricated structure 18; the width of the exit gate slot 5 is larger than that of the fishway exit 3; the height of the outlet gate slot 5 is not less than twice the height of the outlet gate 4.
In this embodiment, the width of the outlet gate 4 is 1.2 meters, the height thereof is 4 meters, and the height is the same as the difference between 324 meters of the top plate of the F3 fishway outlet and 320 meters of the bottom plate of the F1 fishway outlet; the width of the exit gate slot 5 is 1.2 meters, the height is 12 meters, the width is larger than the width of the fishway exit 3, the height is 3 times of the height of the exit gate 4, and the height is 316 meters-328 meters.
The direction of the water outlet 8 is vertical to the direction of river water flow, the matched fishway 7 is connected with a fishway fixed on the side slope, and the angle difference between the direction of the water outlet 8 and the direction of the fishway outlet 3 is 75-105 degrees.
The prefabricated structure 1 comprises a fishway bottom plate 13, an outer wall 14 and an inner wall 15, the fishway bottom plate is gradually lifted and spirally arranged, the thickness of the fishway bottom plate 13 is 0.2 m, and the aspect ratio of the section of the prefabricated structure 1 is 0.6-1.25; the inner wall 15 is equipped with a plurality of open structure 16 in the position department of hugging closely upper fishway bottom plate 13 lower limb, and a plurality of open structure 16 interval sets up on inner wall 15, and every open structure 16 is as rectangular shape lighting window, and each layer of prefabricated construction 1 all adopts outer wall 14 as the manger plate breastwork, and the open structure 16 of inner wall 15 can guarantee the fishway natural lighting simultaneously.
The height of the opening structure 16 is 0.1 to 0.4 times of the height of the outer wall 14, and the total length of the opening structure 16 on the inner wall 15 of the single-layer prefabricated structure 1 is 30 to 60 percent of the length of the single-layer prefabricated structure 1.
As shown in fig. 5, in this embodiment, the upstream water level amplitude is between the lowest operation water level (320 meters) and the highest operation water level (324 meters), and the heights of the bottom plates of the 3 fishway outlets 3 are set to be 320 meters, 321.4 meters and 322.8 meters in stages according to the actual fishway operation water level. The length of the prefabricated structure 1 is determined according to the gradient of the fishway bottom plate and the height difference of the bottom plate of the outlet of the fishway at the adjacent layer, and the calculation formula is as follows:
wherein, the first and the second end of the pipe are connected with each other,lis the length of a single-layer spiral laminated fishway,hthe height difference of the bottom plate at the outlet of the fishway at the adjacent layer,
the slope of the fishway bottom plate;
determined according to the species and habits of the fish, the ratio is 1.
In this embodiment, the gradient of the bottom plate of the fishway of the serving migratory fish is about 1 15, so that the length of the single-layer fishway of the circular spiral laminated fishway shown in fig. 1 is calculated according to the above formula, and the length of the single-layer fishway is 21 meters, the outer diameter of the circular spiral laminated fishway shown in fig. 1 is 8 meters, the inner diameter is 5.2 meters, the wall thickness is 0.2 meters, the diameter of the central line of the fishway is 6.6 meters, and the width of the section of the fishway is 1 meter and the height is 1.2 meters.
In the present embodiment, the 3 fishway outlet 3 floor elevations are set in stages to 320 meters (fishway outlet No. F1), 321.4 meters (fishway outlet No. F2), and 322.8 meters (fishway outlet No. F3) according to the actual fishway operating water level. The heights of the F1-F3 fishway outlets are all 0.7 m.
According to actual operation conditions, the upstream water level has three operation conditions, wherein the first operation condition is that the upstream water level is lower than the lowest operation water level (320 meters) of the fishway, the second operation condition is that the upstream water level is between the lowest operation water level (320 meters) and the highest operation water level (324 meters) of the fishway, and the third operation condition is that the upstream water level is higher than the highest operation water level (324 meters) of the fishway.
For these three operating cases, the workflow is explained in conjunction with fig. 6:
1) When the operation water level is below 320 meters (namely, the operation water level is lower than the lowest operation water level of the fishway), the fishway stops operating, and the outlet gate 4 can be lifted to the height of 324-328 meters in the outlet gate groove 5 for maintenance;
2) When the operation water level is between 320 and 324 meters
When the operating water level rises to 320-321.4 m, the outlet gate 4 is lifted to an elevation of 316-320 m, the outlets of the F1-F3 fishways are opened, water flow enters from the outlets of the F1 fishways, and fishes come out from the outlets of the F1 fishways;
when the operation water level rises to 321.4-322.8 meters, the outlet gate 4 is lifted to 317.4-321.4 meters, the outlet of the fishway No. F1 is closed, the outlets of the fishways No. F2-F3 are opened, water flow enters from the outlet of the fishway No. F2, and fish come out from the outlet of the fishway No. F2;
when the operating water level rises to 322.8-324 m, the outlet gate 4 is lifted to an elevation of 318.8-322.8 m, the outlets of the F1-F2 fishways are closed, the outlet of the F3 fishway is opened, water flows enter from the outlet of the F3 fishway, and fishes come out from the outlet of the F3 fishway;
3) When the operation water level rises to over 324 meters (namely higher than the highest operation water level of the fishway), the outlet gate 4 is lifted to the height of 320-324 meters, the outlet of the No. F1-F3 fishway is closed, and the fishway stops operating.
Therefore, opening and closing of a plurality of fishway outlets 3 can be controlled through a set of fixed outlet gate opening and closing equipment 6 and an outlet gate 4, and the outlet water level of the fishway can be matched with different running water levels of a river channel to supply fish to normally migrate.
According to the description and the drawings, the person skilled in the art can easily make or use the spiral laminated fishway exit structure suitable for large water level amplitude and can produce the positive effects recorded in the invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiments according to the technical spirit of the present invention are included in the scope of the present invention.
Claims (10)
1. A spiral laminated fishway outlet structure suitable for large water level amplitude variation is characterized by comprising a spiral laminated fishway (11), a supporting base (2), a plurality of fishway outlets (3) and outlet gates (4); the supporting foundation (2) is fixed on a side slope or a river bottom to support the spiral stacked fishway (11); the plurality of fishway outlets (3) are positioned in the same direction of different layers of the outer wall of the spiral laminated fishway (11) and correspond to different operating water levels; the other direction of the lowest layer of the fishway outlet (3) is a water flow outlet (8) of the spiral stacked fishway (11), the elevation of the water flow outlet (8) is lower than that of the spiral stacked fishway (11), and the water flow outlet (8) is connected with the matched fishway (7); the plurality of fishway outlets (3) share the same outlet gate (4), the outlet gate (4) is positioned at the outer side of the plurality of fishway outlets (3), and the outlet gate (4) can move in the height direction to realize the unified opening and closing control of the plurality of fishway outlets (3); and a top structural platform (9) is arranged at the top of the spiral stacked fishway (11).
2. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 1, wherein: the spiral stacked fishway outlet structure is integrally in a circular or rectangular structure.
3. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 1, wherein: the spiral laminated fishway (11) comprises a plurality of prefabricated structures (1), the prefabricated structures (1) are sequentially spliced end to end in the height direction, and each prefabricated structure (1) comprises a fishway outlet (3); the water outlet (8) is arranged on the supporting foundation (2), the supporting foundation (2) is provided with a connecting fishway (12), a first port for connecting the fishway (12) is the water outlet (8), and a second port is connected with the prefabricated structure (17) on the bottommost layer.
4. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 1, wherein: an outlet gate groove (5) is formed in the spiral stacked fishway outlet structure, the outlet gate (4) moves in the outlet gate groove (5), the outlet gate (4) is connected with an outlet gate opening and closing device (6), and the outlet gate opening and closing device (6) is arranged on the top structure platform (9); the exit gate slot (5) is connected with the spiral stacked fishway (11), the supporting base (2) and the outer side wall of the top structure platform (9).
5. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 4, wherein: the height of the outlet gate (4) is not lower than the distance between the bottom plate of the fishway outlet (3) of the bottom prefabricated structure (17) and the top plate of the fishway outlet (3) of the top prefabricated structure (18); the width of the exit gate slot (5) is larger than that of the fishway exit (3); the height of the outlet gate slot (5) is not less than twice the height of the outlet gate (4).
6. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 1, wherein: the angle difference between the direction of the water outlet (8) and the direction of the fishway outlet (3) is 75-105 degrees.
7. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 3, wherein: the prefabricated structure (1) comprises a fishway bottom plate (13), an outer wall (14) and an inner wall (15), and the aspect ratio of the section of the prefabricated structure (1) is 0.6 to 1.25; inner wall (15) are equipped with a plurality of open structure (16) in the position department of hugging closely upper fishway bottom plate (13) lower edge, and a plurality of open structure (16) interval sets up on inner wall (15), fishway bottom plate (13) are raised gradually to be the spiral setting.
8. The spiral stacked fishway exit structure suitable for large water level variation as claimed in claim 7, wherein: the height of the opening structure (16) is 0.1 to 0.4 time of that of the outer wall (14), and the total length of the opening structure (16) on the inner wall (15) of the single-layer prefabricated structure (1) is 30 to 60 percent of that of the single-layer prefabricated structure (1).
9. The spiral stacked fishway exit structure suitable for large water level variation as claimed in claim 7, wherein: the length of the prefabricated structure (1) is determined according to the gradient of the fishway bottom plate (13) and the height difference of the bottom plates of the fishway outlets (3) of the adjacent layers, and the calculation formula is as follows:
wherein the content of the first and second substances,lis the length of a single-layer spiral laminated fishway,hthe height difference of the bottom plate at the outlet of the fishway at the adjacent layer,
the slope of the fishway bottom plate;
determined according to the species and habits of the fish, the ratio is 1.
10. The spiral stacked fishway exit structure suitable for large water level amplitude variation as claimed in claim 1, wherein: top structure platform (9) are higher than the highest flood control water level in upper reaches, and the bottom plate elevation of a plurality of fishway exports (3) sets up according to actual fishway operation water level in grades.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211430989.0A CN115492062A (en) | 2022-11-16 | 2022-11-16 | Spiral laminated fishway outlet structure suitable for large water level amplitude |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211430989.0A CN115492062A (en) | 2022-11-16 | 2022-11-16 | Spiral laminated fishway outlet structure suitable for large water level amplitude |
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| CN202211430989.0A Pending CN115492062A (en) | 2022-11-16 | 2022-11-16 | Spiral laminated fishway outlet structure suitable for large water level amplitude |
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Citations (10)
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|---|---|---|---|---|
| JPH0635319U (en) * | 1992-10-16 | 1994-05-10 | 財団法人ダム水源地環境整備センター | Simple fishway device |
| JPH0782727A (en) * | 1993-09-13 | 1995-03-28 | Ishikawajima Harima Heavy Ind Co Ltd | Fishway device |
| JPH09328739A (en) * | 1996-06-11 | 1997-12-22 | Showa Concrete Ind Co Ltd | Spiral fish way |
| JPH10292354A (en) * | 1997-04-11 | 1998-11-04 | 進太郎 ▲つし▼馬 | Fish pass |
| JP2001049645A (en) * | 1999-08-10 | 2001-02-20 | Showa Concrete Ind Co Ltd | Spiral fish pass |
| JP2009287208A (en) * | 2008-05-27 | 2009-12-10 | Niigata Univ | Spiral fishladder |
| CN107700441A (en) * | 2017-11-21 | 2018-02-16 | 中国电建集团成都勘测设计研究院有限公司 | Compound fish channel structure on Narrow Valleys landform dam |
| CN110468807A (en) * | 2019-07-09 | 2019-11-19 | 中国电建集团华东勘测设计研究院有限公司 | A kind of more imports of fish pass or multiple exit concentration are arranged in juxtaposition structure |
| CN110468806A (en) * | 2019-07-09 | 2019-11-19 | 中国电建集团华东勘测设计研究院有限公司 | A kind of fish pass import or export structure being layered fish |
| CN111893961A (en) * | 2020-07-21 | 2020-11-06 | 长江勘测规划设计研究有限责任公司 | Fishway outlet gate arrangement structure adapting to large water level amplitude variation and use method thereof |
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2022
- 2022-11-16 CN CN202211430989.0A patent/CN115492062A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0635319U (en) * | 1992-10-16 | 1994-05-10 | 財団法人ダム水源地環境整備センター | Simple fishway device |
| JPH0782727A (en) * | 1993-09-13 | 1995-03-28 | Ishikawajima Harima Heavy Ind Co Ltd | Fishway device |
| JPH09328739A (en) * | 1996-06-11 | 1997-12-22 | Showa Concrete Ind Co Ltd | Spiral fish way |
| JPH10292354A (en) * | 1997-04-11 | 1998-11-04 | 進太郎 ▲つし▼馬 | Fish pass |
| JP2001049645A (en) * | 1999-08-10 | 2001-02-20 | Showa Concrete Ind Co Ltd | Spiral fish pass |
| JP2009287208A (en) * | 2008-05-27 | 2009-12-10 | Niigata Univ | Spiral fishladder |
| CN107700441A (en) * | 2017-11-21 | 2018-02-16 | 中国电建集团成都勘测设计研究院有限公司 | Compound fish channel structure on Narrow Valleys landform dam |
| CN110468807A (en) * | 2019-07-09 | 2019-11-19 | 中国电建集团华东勘测设计研究院有限公司 | A kind of more imports of fish pass or multiple exit concentration are arranged in juxtaposition structure |
| CN110468806A (en) * | 2019-07-09 | 2019-11-19 | 中国电建集团华东勘测设计研究院有限公司 | A kind of fish pass import or export structure being layered fish |
| CN111893961A (en) * | 2020-07-21 | 2020-11-06 | 长江勘测规划设计研究有限责任公司 | Fishway outlet gate arrangement structure adapting to large water level amplitude variation and use method thereof |
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Application publication date: 20221220 |
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