CN210636398U - Fishway inlet or outlet structure capable of passing fishes in layers - Google Patents
Fishway inlet or outlet structure capable of passing fishes in layers Download PDFInfo
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- CN210636398U CN210636398U CN201921061528.4U CN201921061528U CN210636398U CN 210636398 U CN210636398 U CN 210636398U CN 201921061528 U CN201921061528 U CN 201921061528U CN 210636398 U CN210636398 U CN 210636398U
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Abstract
The utility model provides a fishway import or export structure of fish can be crossed in layering, including a plurality of fishway entrance (exit) ports, gate opening and closing and transportation equipment, opening and closing equipment track, fishway entrance (exit) port gate storage gate slot, supporting fishway, fishway entrance (exit) port gate, manger plate breast wall or baffle, entrance (exit) port single gate slot, a plurality of fishway entrance (exit) ports correspond to different operation water levels respectively, and the fishway entrance (exit) ports are layered into the entrance (exit) port single gate slot and have corresponding bottom plate elevations; the fishway inlet (outlet) ports are respectively provided with a fishway inlet gate, and under the condition of different fishway operating water levels, the fishway inlet (outlet) port gates are automatically opened and closed according to a set operating water level interval, so that the flow speed of the fishway inlet (outlet) port water flow is ensured to meet the fish luring condition. The utility model discloses the range of arrangement is little, compact structure, and is little to main part engineering interference, and the operation maintenance is convenient, and the construction cost is few, can adapt to the big amplitude of fluctuation operation water level.
Description
Technical Field
The utility model relates to a fishway advances (goes out) a mouthful structure, especially relates to a fishway that can adapt to the layering of the big width of cloth operating water level and cross fish advances (goes out) a mouthful structure, belongs to hydraulic structure design and builds technical field.
Background
After the river is cut off due to building of a water retaining building, a migration channel is provided for some fishes with spawning habits from the downstream of the river to the upstream of the river through the fishway, and in order to ensure the fish passing effect, the fishway is generally required to have a condition of continuously passing the fishes in the fish passing season. Water flow enters a fishway from a reservoir at the upstream of a water retaining structure and flows out of the fishway from a riverway at the downstream of the water retaining structure, migratory fishes enter the fishway from the downstream and swim out of the fishway from the upstream, so that a water outlet at the downstream is called a fishway inlet, and a water inlet at the upstream is called a fishway outlet.
Aiming at the actual engineering condition that the operating water level of the fish passing facility inlet (outlet) is large in amplitude, the fish passage inlet (outlet) generally needs to meet the following requirements for realizing the purpose of passing fish: 1. the fish way inlet (outlet) port needs to be capable of adapting to the water level variation of the downstream river channel (upstream reservoir) of a water retaining structure, and the fish way inlet (outlet) port can keep proper water depth and water flow velocity under the fish passing operation water level of any downstream river channel (upstream reservoir); 2. the requirement of the water depth in the fishway is that the fishway pond chamber always needs to keep the design water depth requirement of 0.5-2.5 m; 3. according to the operating water levels of different inlet (outlet) ports, the fishway inlet (outlet) port can automatically open the gate of the corresponding inlet (outlet) port, and close the inlet (outlet) port gate which has adverse effect on the fish passing water flow; 4. for a plurality of inlets (outlets) of the fishway, the later operation and maintenance are convenient.
In order to meet the requirements, in the prior art, the arrangement scheme of the fish inlet (outlet) port is usually adopted for the situation that the amplitude of the water level of the fish passing operation is large as follows:
according to the different inlet (outlet) operating water levels, the conventional arrangement is: the inlet (outlet) ports with different elevations are continuously arranged along the bank of a downstream river channel (or the bank of an upstream reservoir) or combined with a hub building, and each inlet (outlet) port is provided with a gate. The structure is characterized in that: 1. the site arrangement condition is good, and a plurality of inlet (outlet) ports can be arranged in a suitable manner; 2. each inlet (outlet) is provided with a gate and an independent opening and closing device which can independently operate; 3. the requirement of the fishway for continuously passing the fish is met. The disadvantages of this structure are: 1. when the number of fish way inlets (outlets) is large, the structural arrangement is dispersed, which is not beneficial to operation and maintenance; 2. the arrangement of the edge line type along the bank needs a larger occupied field, and certain excavation supporting and foundation treatment engineering quantity can be brought; 3. a plurality of sets of gates and opening and closing systems need to be arranged; 4. sufficient arrangement conditions are also needed in connection with the arrangement of the junction building, and the overall consideration with the structure of the junction building is needed, so that the interference with the main engineering is large.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that will solve is: the fishway multi-inlet (outlet) arrangement structure has the advantages of small structure arrangement range, compact structure, small interference to main engineering, convenient operation and maintenance, low construction cost and capability of adapting to large-amplitude operation water level.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a fishway import or export structure of fish can be crossed in layering which characterized in that: the fishway gate comprises a plurality of fishway inlets, gate opening and closing and transporting equipment, opening and closing equipment rails, fishway inlet gate storage slots, matched fishways, fishway inlet gates and water retaining breast walls or partition plates; the fishway inlets are configured with the same single inlet gate slot, the fishway inlets are respectively arranged at different heights corresponding to different river channel operating water levels and are layered into the single inlet gate slot, and the different fishway inlets are separated by a water retaining breast wall or a partition plate and have corresponding floor elevations; the fishway inlets are respectively provided with a fishway inlet gate;
or comprises a plurality of fishway outlets, gate opening and closing and transporting equipment, opening and closing equipment rails, fishway outlet gate storage slots, matched fishways, fishway outlet gates, water retaining breast walls or partition plates; the fishway outlets are configured with a single outlet gate slot, the fishway outlets are respectively arranged at different heights corresponding to different reservoir operating water levels and are layered into the single outlet gate slot, and the different fishway outlets are separated by a water retaining breast wall or a partition plate and have corresponding floor elevations; and the fishway outlets are respectively provided with respective fishway outlet gates.
Under the condition of different fishway operating water levels, the related fishway inlet (outlet) gate is automatically opened and closed according to the set operating water level interval, so that the flow velocity of the fishway inlet (outlet) water flow is ensured to meet the fish luring condition.
Further, the fishway inlet gates of the plurality of fishway inlets share one set of gate opening and closing and transporting equipment, and the gate opening and closing and transporting equipment sequentially transports the fishway inlet gates corresponding to different river channel operation water levels to the fishway inlet gate storage gate slots for temporary storage along the transporting track from high to low and sequentially transports the fishway inlet gates to the corresponding fishway inlets from low to high; the fishway outlet gates of the fishway outlets share one set of gate opening and closing and transporting equipment, the gate opening and closing and transporting equipment transports the fishway outlet gates corresponding to different reservoir operation water levels to the fishway outlet gate storage gate slots in sequence from high to low along the transporting track for temporary storage, and transports the fishway outlet gates to corresponding fishway outlets in sequence from low to high.
Furthermore, the heights of the bottom plates of the fishway inlets are set in a grading manner according to the actual fishway operating water level, and the heights of the bottom plates of the fishway inlets are suitable for different fishway operating water level intervals on the premise of meeting the designed water depth of the fishway pond room; the heights of the bottom plates of the plurality of fishway outlets are set according to actual fishway running water levels in a grading manner, and the heights of the bottom plates of the fishway outlets are adapted to different fishway running water level intervals on the premise of meeting the designed water depth of the fishway pool chamber.
Furthermore, the heights of the top of the side walls of the inlets of the fishways are the same, and the heights of the top of the side walls are greater than the highest flood-control water level of the fishways, so that the fishways are not submerged by downstream river water in normal operation or in extreme cases; the side wall top elevations of the plurality of fishway outlets are the same and are greater than the highest running water level of fishway reservoir water, so that the fishway is not submerged by the reservoir water in normal running or extreme cases.
Furthermore, the matched fishway corresponding to the fishway inlet adopts a parallel spiral or spiral arrangement mode so as to be smoothly connected with fishway inlets with different elevations; the matched fishway corresponding to the fishway outlet is arranged in a parallel spiral or spiral mode so as to be smoothly connected with the fishway outlets with different elevations.
Further, the fishway inlet gates of the plurality of fishway inlets are of the same structural size; the fishway inlet gates of the plurality of fishway outlets are of the same structure and size.
The utility model has the advantages that: the utility model discloses on conventional fishway basis, through setting up the income (play) mouthful structure of fish of can layering, adaptable greatly becomes width of cloth operation water level, is convenient for concentrate a plurality of income (play) mouthful and arranges together. Like this, owing to need not arrange the line type fishway in the length of a side distance of retaining structure low reaches edge bank or on a large scale, also need not utilize the pivot building to carry out the fishway and arrange, saved and arranged the space, reduced basic side slope excavation and strutted and basic processing engineering volume, reduce the interference with the pivot building, can effectively optimize the headstock gear quantity, through adopting automatic headstock gear, make things convenient for the fishway to advance (go out) mouthful according to the amplitude of water level of actual operation, automatic headstock (go out) mouthful gate, make things convenient for the operation and the maintenance of a plurality of (go out) mouthful gates.
Drawings
FIG. 1 is a schematic view of the fishway import structure and parallel spiral fishway plane layout of the layered fish of the present invention
Fig. 2 is a typical sectional view of the fishway inlet structure and parallel spiral fishways for layered fish passage of the present invention.
Fig. 3 is a schematic view of the fishway exit structure and parallel spiral fishway plane arrangement of the layered fish of the present invention.
Fig. 4 is a typical cross-sectional view of the fishway exit structure and parallel spiral fishways for layered fish passage of the present invention.
Labeled as: the fishway gate comprises a single gate slot 1, a fishway inlet (outlet) gate slot 2, a fishway inlet (outlet) gate storage gate slot 3, an opening and closing device track 4, a gate opening and closing and transporting device 5, a matched fishway 6, fishway inlet (outlet) gates 7-9 and a water retaining breast wall or partition plate 10.
Detailed Description
For the purpose of facilitating understanding and carrying out the invention, preferred embodiments of the invention will be further described with reference to the accompanying drawings.
The utility model discloses mainly include single gate slot 1, fishway go into (go out) mouthful 2, fishway go into (go out) mouthful gate and store up gate slot 3, headstock gear track 4, gate are opened and close and transportation equipment 5, supporting fishway 6, manger plate breastwork or baffle 10. The fishway inlets (outlets) are configured with a single gate slot 1 with the same inlet (outlet), the fishway inlets (outlets) are respectively arranged at different heights corresponding to different river channel running water levels and are layered into the single gate slot with the inlet (outlet), the different fishway inlets (outlets) are separated by a water-retaining breast wall or a partition plate 10 and have corresponding floor elevations, so that the water flow velocity of the fishway inlets (outlets) can meet the fish luring condition; the fishway inlets are respectively provided with respective fishway inlet gates and are arranged in a straight line in the vertical direction, and the same vertical lifting track is shared;
according to the embodiment, according to the change condition of the operating water level of a river channel (reservoir), the water head difference between the highest operating water level and the lowest operating water level is divided into three sections of operating water level intervals according to the designed water depth of a fishway and the designed elevation of a fishway inlet (outlet) bottom plate, wherein the three sections of operating water level intervals are a water level interval A, a water level interval B and a water level interval C from high to low in sequence.
Correspondingly, 3 fishway inlet (outlet) ports 2 are arranged, the fishway inlet (outlet) ports 2 from top to bottom are respectively provided with a fishway inlet (outlet) port gate I7, a fishway inlet (outlet) port gate II 8 and a fishway inlet (outlet) port gate III 9, and the fishway inlet (outlet) port gates 7, 8 and 9 have the same structural size for facilitating the opening and closing of the gates.
And (3) opening corresponding fishway outlet gates 7-9 according to the sections of the operating water levels of different reservoirs, and introducing water flow in the reservoirs into a matched fishway 6 from a fishway inlet 2.
And (3) opening corresponding fishway inlet gates 7-9 according to the intervals of different operating water levels, and enabling the water flow in the matched fishway 6 to flow to a downstream river channel from the fishway inlet 2.
Attention is paid to the water level interval setting: a certain overlapping range is considered in each water level interval, so that different working gates at inlet (outlet) ports can be smoothly connected, and the phenomenon that the fishway is cut off when the gate is opened and closed alternately is avoided.
In order to realize the continuous water flow of the fishway inlet (outlet), the unattended operation and the intelligent control of the inlet (outlet) gate opening and closing equipment 4, the gate opening and closing and transporting system can be provided with the gate opening and closing and transporting equipment 4, a water level monitoring instrument, a water level data real-time acquisition and transmission system and a control system for automatically opening and closing the gate according to the water level change. The gate opening and closing and transporting system has the functions of automatic opening and closing and transportation, and according to the change condition of the upstream (downstream) water level, the gate opening and closing system has the functions of automatically opening and closing the corresponding fishway inlet (outlet) gates 7-9 and can automatically transport the fishway inlet (outlet) gates to the gate storage slots 3 for storage.
According to actual conditions, three kinds of water level conditions probably exist in river course (reservoir) water level, and first kind is that river course (reservoir) water level is located fishway operating water level range, and the second kind is that the highest operating water level of fishway is crossed to river course (reservoir) water level, and the third kind of condition is that river course (reservoir) water level is less than the lowest operating water level of fishway, under these three kinds of circumstances, right the utility model discloses two kinds of income (play) mouthful arrangement types that signal in the drawing further explain its work flow respectively:
1. fishway inlet structure capable of passing fish in layered mode
(1) The water level of the river channel is positioned in the range of the operating water level of the fishway
① when the water level operation interval A is within, lifting a fishway inlet gate III 9 out of a fishway inlet single gate slot 1 by using a gate opening and closing and transporting device 5, passing through an opening and closing device track 4, transporting the fishway inlet gate III 9 to the position of a fishway inlet gate slot 3, then lifting the fishway inlet gate III 9 into the fishway inlet gate slot 3, and when the fishway inlet gate III 9 is opened, matching the water flow in the fishway 6 according to the fishway designed water depth, and flowing to a downstream river channel through a fishway inlet 2;
② when the water level operation interval is reduced from A to B, the fishway inlet gate II 8 is lifted out of the fishway inlet single gate slot 1 by the gate opening and closing and transporting device 5, the fishway inlet gate II 8 is transported to the position of the fishway inlet gate storage slot 3 through the opening and closing device track 4, then the fishway inlet gate II 8 is lifted into the fishway inlet gate storage slot 3, when the fishway inlet gate II 8 is opened, the water flow in the matched fishway 6 flows to the downstream river channel through the fishway inlet 2 according to the fishway water depth design;
③ when the water level operation section rises from B to A, the fishway inlet gate II 8 is lifted out of the fishway inlet gate storage gate groove 3 by the gate opening and closing and transportation device 5, the fishway inlet gate II 8 is lifted into the fishway inlet single gate groove 1 by the opening and closing device track 4, and when the fishway inlet gate II 8 is closed, the water flow in the matched fishway 6 flows to the downstream river channel according to the fishway design water depth through the fishway inlet 2.
In addition, when the water level operation interval is reduced from the interval B to the interval C, the first fishway inlet gate 7 is lifted out of the single fishway inlet gate slot 1, the first fishway inlet gate 7 is conveyed to the position of the first fishway inlet gate slot 3 through the opening and closing equipment track 4, then the first fishway inlet gate 7 is lifted into the first fishway inlet gate slot 3, and when the first fishway inlet gate 7 is opened, the water flow in the matched fishway 6 flows to a downstream river channel through the fishway inlet 2 according to the designed water depth of the fishway;
when the water level operation interval rises from the interval C to the interval B, the fishway inlet gate I7 is lifted out of the fishway inlet gate storage gate groove 3, the fishway inlet gate I7 is lifted into the single fishway inlet gate groove 1 through the opening and closing device track 4, and when the fishway outlet gate I7 is closed, the water flow in the matched fishway 6 flows to a downstream river channel according to the designed water depth of the fishway and the designed water depth of the fishway inlet 2.
Therefore, through one rail, one set of gate opening and closing and transportation equipment can open and close corresponding gates in sequence through simple control, and the inlet water level of the fishway can be corresponding to different running water levels of a river channel, so that fishes can normally migrate.
(2) The water level of the river channel is higher than the highest operation water level of the fishway
When the river water level is higher than the highest operation water level of the fishway, if the river water level exceeds the top of the gate, the fishway is in a submerged state, but the operation of the fishway is not influenced, only the water depth at the inlet is too large, the flow velocity of the water flow at the inlet of the fishway is too small, and fish cannot be lured to enter the fishway.
(3) The water level of the river channel is lower than the lowest operation water level of the fishway
When the water level of the river channel is lower than the lowest operation water level of the fishway, the water depth of the fishway inlet with the lowest elevation does not meet the designed water depth requirement of the fishway, and no fish enters the fishway inlet at the moment.
2. Fishway outlet structure capable of passing fish in layered mode
(1) The reservoir water level is in the range of the fishway running water level
① when the water level operation interval A is within, a fishway outlet gate III 9 is lifted out of the fishway outlet single gate slot 1 by using a gate opening and closing and transporting device 5, the fishway outlet gate III 9 is transported to the position of the fishway outlet gate slot 3 through an opening and closing device track 4, then the fishway outlet gate III 9 is lifted into the fishway outlet gate slot 3, and when the fishway outlet gate III 9 is opened, the upstream reservoir water flows into a matched fishway 6 through the fishway outlet 2 according to the designed fishway depth;
② when the water level operation interval is reduced from A to B, the fishway exit gate II 8 is lifted out of the fishway exit single gate slot 1 by using the gate opening and closing and transporting device 5, the fishway exit gate II 8 is transported to the position of the fishway exit gate storage slot 3 by using the opening and closing device track 4, then the fishway exit gate II 8 is lifted into the fishway exit gate storage slot 3, when the fishway exit gate II 8 is opened, the upstream reservoir water flows into the matched fishway 6 through the fishway exit 2 according to the designed fishway depth;
③ when the water level operation interval rises from B to A, the fishway exit gate II 8 is lifted out of the fishway exit gate storage gate groove 3 by the gate opening and closing and transportation device 5, the fishway exit gate II 8 is lifted into the fishway exit single gate groove 1 by the opening and closing device track 4, and when the fishway exit gate II 8 is closed, the upstream reservoir water flows into the matched fishway 6 through the fishway exit 2 according to the fishway design depth.
In addition, when the water level operation interval is reduced from the interval B to the interval C, the first fishway outlet gate 7 is lifted out of the single fishway outlet gate groove 1, the first fishway outlet gate 7 is conveyed to the position of the first fishway outlet gate groove 3 through the opening and closing equipment track 4, then the first fishway outlet gate 7 is lifted into the first fishway outlet gate groove 3, and when the first fishway outlet gate 7 is opened, the water depth of an upstream reservoir is designed according to a fishway, and the water flows into a matched fishway 6 through the fishway outlet 2;
when the water level operation interval rises from the interval C to the interval B, the fishway outlet gate I7 is lifted out of the fishway outlet gate storage gate groove 3, the fishway outlet gate I7 is lifted into the single fishway outlet gate groove 1 through the opening and closing equipment track 4, and when the fishway outlet gate I7 is closed, the water in an upstream reservoir flows into the matched fishway 6 through the fishway outlet 2 according to the designed water depth of the fishway.
Therefore, through one rail, one set of gate opening and closing and transportation equipment can open and close corresponding gates in sequence through simple control, and the outlet water level of the fishway can cope with different running water levels of the reservoir, so that fishes can normally migrate.
(2) The water level of the reservoir is higher than the highest operation water level of the fishway
When the reservoir water level is higher than the highest operation water level of the fishway, the fishway is not suitable for operation, all gates at the outlet of the fishway need to be closed at the moment, if the reservoir water level exceeds the top of the gates, the fishway is in a submerged state, and at the moment, the fishway stops operating in order to ensure the safety of the fishway 6 and the downstream of a water retaining building. In the fish passing season, a fishway flood gate in a water retaining building needs to be opened, so that water in the fishway is ensured, and the fish in the fishway is prevented from being lack of water; in non-fish passing seasons, the fishway flood gate in the water retaining building is closed.
(3) The reservoir water level is lower than the lowest operation water level of the fishway
When the reservoir water level is lower than the lowest operation water level of the fishway, the water depth in the fishway does not meet the requirement of the designed water depth of the fishway, and the fishway also operates temporarily at the moment. In the fish passing season, artificial water replenishing can be considered, so that the water shortage of fishes in the fishway is avoided; in non-fish passing seasons, the fishway flood gate in the water retaining building is closed.
The above only is the concrete embodiment of the utility model, the technical features of the utility model are not limited thereto, and any person skilled in the relevant field is in the field of the utility model, and the changes or modifications are all covered in the protection scope of the utility model.
Claims (5)
1. The utility model provides a fishway import or export structure of fish can be crossed in layering which characterized in that: the fishway gate device comprises a plurality of fishway inlets (2), gate opening and closing and transporting equipment (5), an opening and closing equipment track (4), a fishway inlet gate storage slot (3), a matched fishway (6), fishway inlet gates (7-9) and water retaining breast walls or partition plates (10); the fishway inlets are configured with a same single inlet gate slot, the fishway inlets are respectively arranged at different heights corresponding to different river channel operating water levels and are layered into the single inlet gate slot, and the different fishway inlets are separated by a water retaining breast wall or a partition plate (10) and have corresponding bottom plate elevations; the fishway inlets are respectively provided with a fishway inlet gate;
or comprises a plurality of fishway outlets, gate opening and closing and transporting equipment, opening and closing equipment rails, fishway outlet gate storage slots, matched fishways, fishway outlet gates, water retaining breast walls or partition plates; the fishway outlets are configured with a single outlet gate slot, the fishway outlets are respectively arranged at different heights corresponding to different reservoir operating water levels and are layered into the single outlet gate slot, and the different fishway outlets are separated by a water retaining breast wall or a partition plate and have corresponding floor elevations; and the fishway outlets are respectively provided with respective fishway outlet gates.
2. A fishway inlet or outlet structure for layered fish as claimed in claim 1, wherein: the heights of the bottom plates of the fishway inlets are set in a grading manner according to the actual fishway operating water level, and the heights of the bottom plates of the fishway inlets are adapted to different fishway operating water level intervals on the premise of meeting the designed water depth of a fishway pool chamber;
the heights of the bottom plates of the plurality of fishway outlets are set according to actual fishway running water levels in a grading manner, and the heights of the bottom plates of the fishway outlets are adapted to different fishway running water level intervals on the premise of meeting the designed water depth of the fishway pool chamber.
3. A fishway inlet or outlet structure for layered fish as claimed in claim 1, wherein: the heights of the top of the side walls of the plurality of fishway inlets are the same, and the heights of the top of the side walls are greater than the highest flood-control water level of the fishway, so that the fishway is not submerged by downstream river water in normal operation or under extreme conditions;
the side wall top elevations of the plurality of fishway outlets are the same and are greater than the highest running water level of fishway reservoir water, so that the fishway is not submerged by the reservoir water in normal running or extreme cases.
4. A fishway inlet or outlet structure for layered fish as claimed in claim 1, wherein: the matched fishway corresponding to the fishway inlet adopts a parallel spiral or spiral arrangement type so as to be smoothly connected with fishway inlets with different elevations;
the matched fishway corresponding to the fishway outlet is arranged in a parallel spiral or spiral mode so as to be smoothly connected with the fishway outlets with different elevations.
5. A fishway inlet or outlet structure for layered fish as claimed in claim 1, wherein: the fishway inlet gates of the fishway inlets are of the same structure and size; the fishway inlet gates of the plurality of fishway outlets are of the same structure and size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061528.4U CN210636398U (en) | 2019-07-09 | 2019-07-09 | Fishway inlet or outlet structure capable of passing fishes in layers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921061528.4U CN210636398U (en) | 2019-07-09 | 2019-07-09 | Fishway inlet or outlet structure capable of passing fishes in layers |
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| Publication Number | Publication Date |
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| CN210636398U true CN210636398U (en) | 2020-05-29 |
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| CN201921061528.4U Active CN210636398U (en) | 2019-07-09 | 2019-07-09 | Fishway inlet or outlet structure capable of passing fishes in layers |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113136845A (en) * | 2021-04-28 | 2021-07-20 | 中国葛洲坝集团第一工程有限公司 | Migration type ecological fishway and construction method |
| CN113322908A (en) * | 2021-06-02 | 2021-08-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Realize single fishway exit structure of fish is crossed in layering |
-
2019
- 2019-07-09 CN CN201921061528.4U patent/CN210636398U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110468806B (en) * | 2019-07-09 | 2021-06-01 | 中国电建集团华东勘测设计研究院有限公司 | Fishway inlet or outlet structure capable of passing fishes in layers |
| CN113136845A (en) * | 2021-04-28 | 2021-07-20 | 中国葛洲坝集团第一工程有限公司 | Migration type ecological fishway and construction method |
| CN113322908A (en) * | 2021-06-02 | 2021-08-31 | 中国电建集团贵阳勘测设计研究院有限公司 | Realize single fishway exit structure of fish is crossed in layering |
| CN113322908B (en) * | 2021-06-02 | 2022-11-29 | 中国电建集团贵阳勘测设计研究院有限公司 | Realize single fishway exit structure of fish is crossed in layering |
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