CN105804028B - Detour type fish pass convolution ascent stage rest pond - Google Patents
Detour type fish pass convolution ascent stage rest pond Download PDFInfo
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- CN105804028B CN105804028B CN201610162694.8A CN201610162694A CN105804028B CN 105804028 B CN105804028 B CN 105804028B CN 201610162694 A CN201610162694 A CN 201610162694A CN 105804028 B CN105804028 B CN 105804028B
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- abutment wall
- fish 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
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- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Farming Of Fish And Shellfish (AREA)
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Abstract
The present invention relates to a kind of fish channel structures, disclose detour type fish pass convolution ascent stage rest pond, can eliminate mainstream in convolution ascent stage rest pond and excessively concentrate near the wall surface of outside, and nearby there are the unfavorable fluidised forms of larger recirculating zone for inner edge wall surface.Including outer abutment wall, interior abutment wall, the downstream bath room import dividing pier for exporting dividing pier positioned at the head bay room of rest pond import and being exported positioned at rest pond, head bay room outlet dividing pier is equipped with pier nose guide plate；By being vertically arranged baffling pier at the outer abutment wall turning in fish pass convolution ascent stage rest pond, and the outside abutment wall direction of pier nose guide plate is deflected, keep the flow flowing for entering turning area from head bay room hindered, so as to allow the mainstream concentrated near the wall surface of outside to spread reduction of speed, reduce the reflux near inner edge wall surface, make that the fluidised form in fish pass convolution ascent stage rest pond is regular, flow velocity reduces, is conducive to the rest of fish and traces back.
Description
Technical field
The present invention relates to a kind of fish channel structures, especially detour type fish pass convolution ascent stage rest pond.
Background technology
Fish pass is favored by hydraulic engineering design person always as a kind of important job facilities to protect the fish resources, but with
The appearance in more and more big libraries of high dam, fish pass drop is increasing, in order to slow down gradient, reduces the difficulty that fish are traced back, normal open
Setting detour type fish pass is crossed to realize.In addition, being limited by topographic and geologic condition, sets up and set in half-turn in fish pass engineering, kept away
Open unfavorable arrangement condition.And fish pass turning can often cause mainstream to concentrate on side, then there is certain reflux in the other side, work as corner
When excessive, this phenomenon is more obvious, is unfavorable for fish rest and traces back, it is therefore desirable to rectification measure be arranged in turnaround section, disappear
It can be the key point that fish pass rest pond is designed with rectification can then deteriorate fluidised form but if method is improper, not have energy dissipating and rectification
Effect.
Invention content
The technical problem to be solved by the present invention is to：Detour type fish pass convolution ascent stage rest pond is provided, can be eliminated back
Mainstream excessively concentrates near the wall surface of outside in rotation ascent stage rest pond, and nearby there are larger recirculating zones for inner edge wall surface
Unfavorable fluidised form.
The technical solution adopted in the present invention is to solve above-mentioned technical problem：The convolution ascent stage rest of detour type fish pass
Pond, including outer abutment wall, interior abutment wall, the downstream bath for exporting dividing pier positioned at the head bay room of rest pond import and being exported positioned at rest pond
Room import dividing pier, head bay room outlet dividing pier are equipped with pier nose guide plate；Further include baffling pier, the baffling pier is vertically arranged
It is equipped with guide plate in the pier nose of the medial surface of outer abutment wall turnaround section, baffling pier.
It is further：The outside abutment wall direction of pier nose guide plate deflects 15 °~20 °.
It is further：The baffling pier is located at the corner flush of upstream with interior abutment wall.
It is further：The length of the baffling pier is the half or so of head bay room width.
It is further：The shape of the pier nose is that a quarter is round, and the outside abutment wall direction of guide plate tilts.
The beneficial effects of the invention are as follows：Pass through the outer abutment wall turning increase baffling in ascent stage rest pond of circling round in fish pass
Pier keeps the flow flowing for entering turning area from the import of rest pond hindered, can make to concentrate on the master near the wall surface of outside
Stream diffusion reduction of speed, reduces the reflux near inner edge wall surface, makes that the fluidised form in fish pass convolution ascent stage rest pond is regular, flow velocity subtracts
It is small, be conducive to the rest of fish and trace back.
Description of the drawings
Fig. 1 is the flow field schematic diagram in fish pass convolution ascent stage rest pond in the prior art；
Fig. 2 is the structural schematic diagram of the present invention；
Fig. 3 is the flow field schematic diagram of the present invention；
In figure label for：Abutment wall in the outer abutment walls of 1-, 2-, 21- head bays room outlet dividing pier, 22- downstream baths room import dividing pier,
23- pier noses guide plate, 3- bafflings pier, 31- pier noses, 32- guide plates.
Specific implementation mode
To facilitate the understanding of the present invention, the present invention is further detailed below in conjunction with the accompanying drawings.
As shown in the flow field schematic diagram of Fig. 1, if fish pass convolution ascent stage rest pond does not set energy-dissipating and rectifying flow measure, in the section stream
State is poor, and mainstream concentrates on 1 side of outer abutment wall, and toward the reflux that can form large area after downstream flow；Fish pass circles round the ascent stage
The Upstream section in rest pond is head bay room, and tract is downstream bath room；Head bay room and downstream bath room be separately connected rest pond into
Mouthful and the outlet of rest pond, it is all parallel and be spaced to be provided with multiple long dividing piers and short dividing pier in head bay room and downstream bath room,
Long dividing pier is arranged on outer abutment wall 1, and short dividing pier is arranged on interior abutment wall 2,23 angle of inclination of pier nose guide plate on each short dividing pier
Identical, the dividing pier for being located at the turning of interior abutment wall 2 in head bay room is that head bay room exports dividing pier 21, is located at interior in downstream bath room
The dividing pier at the turning of abutment wall 2 is downstream bath room import dividing pier 22；When flow enters turning area from head bay room, flow can be through
The influence for crossing pier nose guide plate 23 forms concentration sticking wall flow in fish pass turning area, and due to not stopping in turning area, mainstream collection
In in the inner wall of outer abutment wall 1, form the recirculating zone of large area in turning area, keep the flow field of entire turning area disorderly.
As shown in Fig. 2, the present invention is improved traditional fish pass convolution ascent stage rest pond, in 1 turnaround section of outer abutment wall
Medial surface on be vertically arranged a baffling pier 3, baffling pier 3 is located at the corner flush of upstream with interior abutment wall 2.Due in order to protect
Demonstrate,prove enough energy dissipating area ranges, baffling pier 3 should not too close to head bay room, if but baffling pier 3 too close to downstream bath room, again
The flow that upstream is come can be caused to form sticking wall flow in turning area, effect of energy dissipation is made to be deteriorated；If in the downstream from turning area farther out
Baffling pier 3 is set, then the flow of upstream is unimpeded, and necessarily forms sticking wall flow, and after sticking wall flow is formed, flow velocity is larger, this
When in downstream setting baffling pier 3, it is larger to the disturbance of flow, be more unfavorable for the stabilization of fluidised form.Therefore, baffling pier 3 is set
Set the mainstream phase that can make the flow to come from upstream with convolution in the position for the corner flush for being located at upstream with interior abutment wall 2
It mutually liquidates, is conducive to energy dissipating, while can also reduce the reflux in downstream.
In order to keep the effect of energy dissipating, rectification more preferable, the shape of baffling pier 3 also must be considered that.If directly being rolled over using linear type
Pier is flowed, then is on the one hand unfavorable for forming the energy dissipating area of convolution, on the other hand can form the reflux in larger orientation after water flows through
Area.As shown in Fig. 2, that the pier nose 31 of baffling pier 3 is arranged to a quarter erect is round by the present invention, arc-shaped edges outside, straight flange
The medial surface of abutment wall 1 outside face, while the bottom end of pier nose 31 is provided with guide plate 32, the direction of 32 outside abutment wall 1 of guide plate tilts.Such as
Shown in Fig. 3, the flow come out through fish pass upstream passes through the guiding of pier nose 31, and fraction is formed along the upward swirling flow of arc-shaped edges
Energy dissipating area, it is most of to flow to downstream along guide plate 32, reflux situation be improved significantly.The length of baffling pier 3 according to flow and
The concrete condition of flow velocity is arranged, if the length of baffling pier 3 is too short, the range in energy dissipating area is too small to make effect of energy dissipation become
Difference；It is too small it will cause flow section and flow velocity is larger if the length of baffling pier 3 is long.It is relatively more suitable for head bay room length-width ratio
Suitable fish pass, 3 size of baffling pier are preferably taken as the half or so of head bay room width.
As shown in Fig. 2, head bay room exports dividing pier 21 compared to other short dividing piers, by 23 outside abutment wall of pier nose guide plate, 1 side
To deflection, entering the flow direction of turning area flow from head bay room in this way can deflect down, and avoid forming sticking wall flow in corner.With
The angle of inclination of past pier nose guide plate 23 is 45 °, and in the present invention, 23 outside abutment wall of pier nose guide plate, 1 direction is deflected 15 °~20 °,
I.e. by the angle of inclination of pier nose guide plate 23 reduce 15 °~20 °, can make the effect of energy dissipation in 3 lower regions of baffling pier all obtain compared with
It is big to improve.
Claims (3)
- The ascent stage rest pond 1. detour type fish pass circles round, including outer abutment wall (1), interior abutment wall (2), positioned at the upstream of rest pond import Pond room exports dividing pier (21) and the downstream bath room import dividing pier (22) positioned at the outlet of rest pond, and the head bay room exports dividing pier (21) it is equipped with pier nose guide plate (23)；It is characterized in that：Further include baffling pier (3), the baffling pier (3) is vertically set on outside The pier nose (31) of the medial surface of wall (1) turnaround section, baffling pier (3) is equipped with guide plate (32), the baffling pier (3) and interior abutment wall (2) it is located at the corner flush of upstream；Abutment wall (1) direction deflects 15 °~20 ° to the pier nose guide plate (23) outward.
- 2. detour type fish pass convolution ascent stage rest as described in claim 1 pond, it is characterised in that：The baffling pier (3) Length is the half or so of head bay room width.
- 3. detour type fish pass convolution ascent stage rest as described in claim 1 pond, it is characterised in that：The shape of the pier nose (31) Shape is that a quarter is round, and abutment wall (1) direction tilts the guide plate (32) outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162694.8A CN105804028B (en) | 2016-03-21 | 2016-03-21 | Detour type fish pass convolution ascent stage rest pond |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610162694.8A CN105804028B (en) | 2016-03-21 | 2016-03-21 | Detour type fish pass convolution ascent stage rest pond |
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| Publication Number | Publication Date |
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| CN105804028A CN105804028A (en) | 2016-07-27 |
| CN105804028B true CN105804028B (en) | 2018-07-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114319262A (en) * | 2022-01-24 | 2022-04-12 | 中国计量大学 | Fish migration channel with energy dissipation structure |
| CN114910304B (en) * | 2022-05-28 | 2023-04-07 | 黑龙江黑大水利工程质量检测有限公司 | River water quality detection sampling device and method for hydraulic engineering |
| CN115419028B (en) * | 2022-09-26 | 2023-08-11 | 浙江省水利河口研究院(浙江省海洋规划设计研究院) | Tidal estuary fishway with sinking rest pool and design method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03151408A (en) * | 1989-11-06 | 1991-06-27 | Nagasaki Pref Gov | Automatic swing fishway |
| CN203904943U (en) * | 2014-03-24 | 2014-10-29 | 中国水利水电科学研究院 | Vertical slot fishway rest pool |
| CN103835272B (en) * | 2014-03-24 | 2015-06-03 | 中国水利水电科学研究院 | Vertical seam type fishway with 180-degree turning sections |
| CN205475130U (en) * | 2016-03-21 | 2016-08-17 | 中国电建集团成都勘测设计研究院有限公司 | Fishway returns screwing in and rises section rest pond |
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