CN108118667B - Natural slope-like fishway and fish feeding method - Google Patents
Natural slope-like fishway and fish feeding method Download PDFInfo
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- CN108118667B CN108118667B CN201810015887.XA CN201810015887A CN108118667B CN 108118667 B CN108118667 B CN 108118667B CN 201810015887 A CN201810015887 A CN 201810015887A CN 108118667 B CN108118667 B CN 108118667B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/08—Fish passes or other means providing for migration of fish; Passages for rafts or boats
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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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Abstract
The invention discloses a natural-like slope fishway and a fish feeding method.A bent channel at the upper section and a bent channel at the lower section are respectively arranged at two sides of a rest pool and are connected, an inclined channel at the upper section is connected with the end part of the bent channel at the upper section, a bent channel at the lower section is connected with the end part of the bent channel at the lower section, multi-layer fish feeding ports are respectively arranged at the end parts of the inclined channel at the upper section and the bent channel at the lower section, a group of multi-stage oil cylinders are arranged at one side of the multi-layer fish feeding ports and are matched with an inlet baffle, a multi-rib frame is detachably connected to the inclined channel at the lower section, and a group of water blocking wheels are detachably connected to the bent channel at the upper section and the bent channel at the lower section. The natural-like slope fishway can effectively slow down the water flow speed, can provide temporary rest places for the migratory fishes, is favorable for the fishes to finish migration, ensures the normal operation of an ecological system, and is worthy of popularization and application due to the flood overflow function.
Description
Technical Field
The invention relates to the field of fishways, in particular to a natural-simulated slope fishway and a fish feeding method.
Background
With the continuous progress of human society, the use of energy is increasing, the reserve volume of non-renewable resources is becoming smaller and smaller, environmental protection, sustainable development's new energy is being favored nowadays, wherein the application of water conservancy energy is very popular, along with the construction of hydraulic engineering such as dam, the energy problem is alleviated, but facilities such as water pump have influence to ecosystem, upstream and downstream fish can not migration, be unfavorable for the continuation of biodiversity, the problem is not solved, the fishway is generated, but the water flow speed in the fishway is related to dam height difference, water flow can influence the migration of fish, a fishway which is more favorable for fish migration is needed to help fish to complete migration, and stability of ecosystem is maintained.
Disclosure of Invention
The invention aims to provide a natural-like slope fishway and a fish feeding method, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides an imitative nature slope fishway, it includes rest pond, upper segment crooked passageway, lower segment crooked passageway, upper portion inclined channel, lower part inclined channel and spillway passageway, its characterized in that: the utility model discloses a multi-layer fish mouth that advances, including upper segment crooked passageway and lower segment crooked passageway, upper portion crooked passageway and lower segment crooked passageway install respectively in the both sides in rest pond, upper portion crooked passageway and the end connection of upper segment crooked passageway, the end connection of lower segment crooked passageway, flood discharge passageway is connected with the top of upper segment crooked passageway, the multilayer fish mouth that advances is all installed to the end of upper portion crooked passageway and lower segment crooked passageway, multistage hydro-cylinder is installed to one side of multilayer fish mouth that advances, multistage hydro-cylinder and import baffle cooperation, the import baffle passes through the hinge and articulates with the multilayer fish mouth that advances, the end connection of flood discharge passageway has the flood discharge mouth.
A plurality of clapboards are longitudinally welded on the multi-layer fish inlet, and the clapboards divide the multi-layer fish inlet into an upper layer, a middle layer and a lower layer.
The top of the rest pool is provided with a night visual camera; a plurality of pebbles are placed at the bottom of the rest pool.
A group of baffles are welded in the upper inclined channel, a multi-rib plate frame is detachably connected to the lower inclined channel, a group of vertical shafts are detachably connected to the upper section bent channel and the lower section bent channel, and water blocking wheels are rotatably matched on the vertical shafts.
Three reference columns are welded on one side of the multi-layer fish inlet, reference columns are welded on one side of the inlet baffle, a hinge seat is arranged at one end of the multi-stage oil cylinder, a lantern ring is welded on the top end of a piston rod of the multi-stage oil cylinder, the hinge seat is hinged with the reference columns on the side part of the multi-layer fish inlet, and the lantern ring is hinged with the reference columns on the inlet baffle.
A group of counter bores are formed in the multi-rib plate frame, inner hexagon bolts penetrate through the counter bores, and the multi-rib plate frame is detachably connected with the lower inclined channel through the inner hexagon bolts.
The multi-rib plate frame is provided with a plurality of special-shaped ribs, and arc-shaped pits are processed among the special-shaped ribs.
Water blocking plates are uniformly distributed on the outer edge of the water blocking wheel, and the number of the water blocking plates is 4-8.
A fish feeding method adopting any natural slope-like fishway comprises the following steps:
step1: operating a multistage oil cylinder according to the requirements of fish in a water layer to be collected, and selectively controlling the opening of an inlet baffle through the multistage oil cylinder;
step2: fish in the corresponding water layer enter the rest pool through the multi-layer fish inlet through the upper inclined channel and the upper bending channel;
step3: providing rest places for the fishes through pebbles at the bottom of the rest pool;
step4: starting a night visual camera at the top of the rest pool, collecting images of fish in the rest pool, and recording the activity condition.
The invention has the following beneficial effects:
1. when the natural-like slope fishway is used, the multi-layer fish inlet is divided into an upper layer, a middle layer and a lower layer by the partition plate, fish perching in water at different heights can enter the multi-layer fish inlet through the upper layer, the middle layer or the lower layer respectively, the three layers of the multi-layer fish inlet are all provided with inlet baffles, the inlet baffles are driven by the multi-stage oil cylinders, the multi-stage oil cylinders adopt electric oil cylinders, the control switches of the multi-stage oil cylinders are led out and connected to the control room, and workers can conduct opening and closing control on different inlet baffles through the switches of the multi-stage oil cylinders, so that the workers can conduct closing and opening of the inlet baffles of different layers at any time according to different requirements.
2. When researching the kind and the quantity of fish in different water layers, can provide convenience for the data acquisition of fish quantity and kind through adopting the design of multilayer fish inlet, when needing to gather the density and the kind of bottom fish, then close the import baffle of upper strata and middle level, when needing to gather the density and the kind of middle level fish, then close the import baffle of upper strata and bottom, when needing to gather the density and the kind of upper strata fish, then close the import baffle of middle level and bottom, fish gets into the rest pond through multilayer fish inlet through upper portion inclined channel and upper segment crooked passageway.
3. The top of the rest pool is provided with a night visual camera, so that a worker can conveniently collect real-time images in the rest pool, and pebbles can provide places for fishes to rest.
4. The flood overflow channel is used for flood overflow, the flood overflow port is located above the multilayer fish inlet connected with the upper inclined channel, when the rainfall is large, the flood overflow port can be used for flood overflow when the water level rises rapidly, the water flow discharging speed is increased, the levee-breaking risk is reduced, the baffles in the upper inclined channel are distributed left and right alternately, the water flow speed can be slowed down, the upper-section bent channel and the lower-section bent channel are in a bent shape, the effect of slowing down the water flow can be achieved, meanwhile, the water blocking wheels are rotatably arranged in the upper-section bent channel and the lower-section bent channel, the water blocking plates on the water blocking wheels can play different water blocking effects along with the change of the water flow speed, the water blocking wheels push the water blocking plates to absorb the kinetic energy of the water flow when the water flows, the water flow is faster, the water flow is absorbed more kinetic energy of the water flow, the rest pool can provide rest places for the fishes, the fatigue of the fish in the running is slowed down, the physical power of the fishes is recovered, and the upward swimming of the fishes is facilitated.
5. The multi-rib frame in the lower inclined channel can reduce the speed of water flow, when water flows downwards, the special-shaped ribs can play a role in pushing resistance to the water flowing downwards because the protruding direction is obliquely upwards, and the arc-shaped nest can provide a stopping place for the fish moving upwards, so that the fish body not supported by the upstream can be prevented from being washed down the lower inclined channel, the success rate of fish migration is increased, the whole equipment is reasonable in design, meets the migration habit of the fish, and can well play a role in slowing down the descending speed of the water flow.
6. The device can effectively slow down the water flow speed, can provide temporary rest places for the migratory fishes, is favorable for the fishes to finish migration, ensures the normal operation of an ecological system, fuses the flood overflow function and is worthy of popularization and application.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a schematic structural view of the middle rest pool of the present invention.
Fig. 4 is a schematic view of the structure of the upper inclined passage portion of fig. 2.
Fig. 5 is a schematic view of the structure of the lower inclined passage portion of fig. 1.
FIG. 6 is a schematic view of the structure of the multi-rib frame of the present invention.
Fig. 7 is a top view of fig. 6.
Fig. 8 is a schematic structural view of the water blocking wheel of the present invention.
Fig. 9 is an enlarged partial schematic view of the encircled portion of fig. 1.
In the figure: the device comprises a rest pool, an upper section bending channel, a lower section bending channel, an upper section tilting channel, a lower section tilting channel, a 6 flood discharge channel, a 7-layer fish inlet, an 8-stage oil cylinder, a 9-inlet baffle, a 10 hinge, an 11 flood discharge port, a 12 baffle, a 13 multi-rib plate frame, 14 pebbles, 15 vertical shafts, 16 water blocking wheels, a 17 night vision camera, 18 baffle plates, 19 positioning columns, 20 hinge seats, 21 piston rods, 22 lantern rings, 23 countersunk holes, 24 hexagon bolts, 25 special-shaped ribs, 26 arc-shaped pits and 27 water blocking plates.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
as shown in fig. 1-9, a natural slope-like fishway comprises a rest pool 1, an upper section bending channel 2, a lower section bending channel 3, an upper inclined channel 4, a lower inclined channel 5 and a flood spillway 6, and is characterized in that: the utility model discloses a multi-layer fish inlet, including upper segment crooked passageway 2 and lower segment crooked passageway 3, upper portion crooked passageway 4 and upper segment crooked passageway 2's end connection, lower part crooked passageway 5 and lower segment crooked passageway 3's end connection, flood discharge passageway 6 is connected with upper segment crooked passageway 2's top, multilayer fish inlet 7 has all been installed to upper portion crooked passageway 4 and lower segment crooked passageway 5's tip, multistage hydro-cylinder 8 has been installed to one side of multilayer fish inlet 7, multistage hydro-cylinder 8 cooperates with import baffle 9, import baffle 9 articulates with multilayer fish inlet 7 through hinge 10, the end connection of flood discharge passageway 6 has flood discharge mouth 11. The device can effectively slow down the water flow speed, can provide temporary rest places for the migratory fishes, is favorable for the fishes to finish migration, ensures the normal operation of an ecological system, fuses the flood overflow function and is worthy of popularization and application.
Further, a plurality of partition boards 18 are longitudinally welded on the multi-layer fish inlet 7, and the partition boards 18 divide the multi-layer fish inlet 7 into an upper layer, a middle layer and a lower layer. Fish perching in water at different heights can enter the multi-layer fish inlet through the upper layer, the middle layer or the lower layer respectively, three layers of the multi-layer fish inlet are provided with inlet baffles, the inlet baffles are driven by a multi-stage oil cylinder, the multi-stage oil cylinder adopts an electric oil cylinder, and a control switch of the multi-stage oil cylinder is led out and connected to a control room. The design makes the staff can carry out the closing and opening of the import baffle 9 of different layers at any time according to different demands, when researching the kind and the quantity of fish in different water layers, such design can provide convenience for the data acquisition of fish quantity and kind, when needing to gather the density and the kind of bottom fish, then close the import baffle 9 of upper strata and middle level, when needing to gather the density and the kind of middle level fish, then close the import baffle 9 of upper strata and bottom, when needing to gather Mi and the kind of upper strata fish, then close the import baffle 9 of middle level and bottom, fish gets into rest pond 1 through multilayer fish inlet 7 through upper portion inclined channel 4 and upper segment crooked passageway 2.
Further, the top of the resting pool 1 is provided with a night vision camera 17; a plurality of pebbles 14 are placed at the bottom of the rest pool 1. The pebble 14 can provide the place of rest for fish, and the flood discharge passageway is used for the flood discharge to use, and the flood discharge mouth is located the multilayer that is connected with upper portion slope passageway and advances the fish mouth top, and when rainfall is big, and the water level rises fast, the flood discharge mouth can supply the flood discharge to use, increases the discharge velocity of rivers, reduces the dyke risk of breach.
Further, a group of baffles 12 are welded in the upper inclined channel 4, a multi-rib frame 13 is detachably connected to the lower inclined channel 5, a group of vertical shafts 15 are detachably connected to the upper section curved channel 2 and the lower section curved channel 3, and water blocking wheels 16 are rotatably matched on the vertical shafts 15. The baffles 12 in the upper inclined channel 4 are distributed left and right alternately, so that the water flow speed can be slowed down, the upper section bent channel 2 and the lower section bent channel 3 are bent, the effect of slowing down the water flow can be achieved, meanwhile, the water blocking wheels 16 are rotatably arranged in the upper section bent channel 2 and the lower section bent channel 3, the water blocking plates 27 on the water blocking wheels 16 can play different water blocking roles along with the change of the water flow speed, when the water flows, the water flow pushes the water blocking plates 27, the water blocking wheels 16 rotate to absorb the kinetic energy of the water flow, the water flow is faster, the rotating speed of the water combining wheels 16 is faster, and the kinetic energy of more water flow can be absorbed
Further, three positioning columns 19 are welded on one side of the multi-layer fish inlet 7, positioning columns 19 are welded on one side of the inlet baffle 9, a hinge seat 20 is arranged at one end of the multi-stage oil cylinder 8, a lantern ring 22 is welded on the top end of a piston rod 21 of the multi-stage oil cylinder 8, the hinge seat 20 is hinged with the positioning columns 19 on the side of the multi-layer fish inlet 7, and the lantern ring 22 is hinged with the positioning columns 19 on the inlet baffle 9.
Further, a set of countersunk holes 23 are formed in the multi-rib frame 13, and socket head cap bolts 24 are arranged on the countersunk holes 23 in a penetrating mode, and the multi-rib frame 13 is detachably connected with the lower inclined channel 5 through the socket head cap bolts 24.
Further, the multi-rib frame 13 is provided with a plurality of special-shaped ribs 25, and arc-shaped grooves 26 are arranged between the special-shaped ribs 25.
Further, a plurality of water blocking plates 27 are uniformly distributed on the outer edge of the water blocking wheel 16, and the number of the water blocking plates 27 is 4-8.
Example 2:
a fish feeding method adopting any natural slope-like fishway comprises the following steps:
step1: operating a multi-stage oil cylinder 8 according to the requirements of fish in a water layer to be collected, and selectively controlling the opening of an inlet baffle 9 through the multi-stage oil cylinder 8;
step2: fish in the corresponding water layer enter the rest pool 1 through the multi-layer fish inlet 7, the upper inclined channel 4 and the upper bending channel 2;
step3: providing rest places for fishes through pebbles 14 at the bottom of the rest pool 1;
step4: and starting a night visual camera 17 at the top of the rest pool 1, collecting images of the fish in the rest pool 1, and recording the activity condition.
The working process and the working principle of the invention are as follows:
when the natural-like slope fishway is used, the multi-layer fish inlet 7 is divided into an upper layer, a middle layer and a lower layer by the partition plates, fish inhabiting in water at different heights can enter the multi-layer fish inlet 7 through the upper layer, the middle layer or the lower layer respectively, the three layers of the multi-layer fish inlet 7 are provided with inlet baffles 9, the inlet baffles 9 are driven by the multi-stage oil cylinders 8, the multi-stage oil cylinders 8 adopt electric oil cylinders, control switches of the multi-stage oil cylinders 8 are led out to a control room, workers can conduct opening and closing control on different inlet baffles 9 through the switches of the multi-stage oil cylinders 8, the design enables the workers to conduct closing and opening of the inlet baffles 9 at different layers at any time according to different requirements, when the types and the quantity of fish in different water layers are studied, the design can provide convenience for data acquisition of the quantity and the type of fish, and when the density and the type of the fish at the bottom layer are required to be acquired, when the density and the type of the middle-layer fishes need to be collected, the inlet baffles 9 of the upper layer and the bottom layer are closed, when the density and the type of the upper-layer fishes need to be collected, the inlet baffles 9 of the middle layer and the bottom layer are closed, the fishes enter the rest pond 1 through the multi-layer fish inlet 7 via the upper inclined passage 4 and the upper-section bent passage 2, the top of the rest pond 1 is provided with a night visual camera 17, the real-time image collection in the rest pond 1 is convenient for workers, the pebbles 14 can provide places for the fishes to rest, the flood overflow passage 6 is used for flood overflow, the flood overflow opening 11 is positioned above the multi-layer fish inlet 7 connected with the upper inclined passage 4, when the rainfall is large, the water level rises rapidly, the flood overflow opening 11 can be used for flood overflow, the discharge speed of water flow is increased, the risk of the breach is reduced, the baffles 12 in the upper inclined passage 4 are distributed left and right alternately, the water flow speed can be slowed down, the upper bending channel 2 and the lower bending channel 3 are in bending shapes, the effect of slowing down the water flow can be achieved, meanwhile, the water blocking wheels 16 are rotatably arranged in the upper bending channel 2 and the lower bending channel 3, the water blocking plates 27 on the water blocking wheels 16 can play different roles in blocking water along with the change of the water flow speed, when the water flows, the water flow pushes the water blocking plates 27, the water blocking wheels 16 rotate to absorb the kinetic energy of the water flow, the faster the water flow is, the faster the rotating speed of the water combining wheels 16 is, the kinetic energy of more water flow can be absorbed, the rest pool 1 can provide rest places for the fishes, fatigue of the fish migration is slowed down, the physical strength of the fishes is recovered, upward migration of the fishes is facilitated, the speed of the water flow can be reduced through the multi-rib frame 13 in the lower inclined channel 5, the water flows downwards, the special-shaped ribs 25 play a role in pushing the upward direction along with the change of the water flow speed, the arc-shaped nest 26 can provide a pause place for the upward swimming fishes, the upward swimming fishes can be prevented from being supported by the fishes and the whole set of the equipment of the downward migration of the fishes is designed to be reasonably slowed down, and the water flow rate is well achieved.
From the above description, it is apparent to those skilled in the art that various changes and modifications can be made without departing from the scope of the technical spirit of the invention. The present invention is not limited to the prior art.
Claims (7)
1. The utility model provides an imitative natural slope fishway which characterized in that: it includes rest pond (1), upper segment crooked passageway (2), lower segment crooked passageway (3), upper portion inclined channel (4), lower part inclined channel (5) and flood spillway passageway (6), its characterized in that: the upper section bending channel (2) and the lower section bending channel (3) are respectively arranged on two sides of the rest pool (1), the upper section bending channel (4) is connected with the end part of the upper section bending channel (2), the lower section bending channel (5) is connected with the end part of the lower section bending channel (3), the flood overflow channel (6) is connected with the top of the upper section bending channel (2), the end parts of the upper section bending channel (4) and the lower section bending channel (5) are respectively provided with a plurality of layers of fish inlets (7), one side of each layer of fish inlets (7) is provided with a plurality of layers of oil cylinders (8), each multi-layer oil cylinder (8) is matched with an inlet baffle (9), each inlet baffle (9) is hinged with each layer of fish inlets (7) through a hinge (10), and the end part of each flood overflow channel (6) is connected with a flood overflow port (11).
A plurality of baffle plates (18) are longitudinally welded on the multi-layer fish inlet (7), and the baffle plates (18) divide the multi-layer fish inlet (7) into an upper layer, a middle layer and a lower layer;
a group of baffles (12) are welded in the upper inclined channel (4), a multi-rib frame (13) is detachably connected to the lower inclined channel (5), a group of vertical shafts (15) are detachably connected to the upper section bent channel (2) and the lower section bent channel (3), and water-blocking wheels (16) are rotatably matched on the vertical shafts (15).
2. A natural-like sloped fish way according to claim 1, in which: the top of the rest pool (1) is provided with a night visual camera (17); a plurality of pebbles (14) are arranged at the bottom of the rest pool (1).
3. A natural-like sloped fish way according to claim 1, in which: three reference columns (19) are welded on one side of the multilayer fish inlet (7), the reference columns (19) are welded on one side of the inlet baffle (9), a hinge seat (20) is arranged at one end of the multistage oil cylinder (8), a lantern ring (22) is welded on the top end of a piston rod (21) of the multistage oil cylinder (8), the hinge seat (20) is hinged with the reference columns (19) on the side of the multilayer fish inlet (7), and the lantern ring (22) is hinged with the reference columns (19) on the inlet baffle (9).
4. A natural-like sloped fish way according to claim 1, in which: a group of countersunk holes (23) are formed in the multi-rib frame (13), inner hexagon bolts (24) are arranged on the countersunk holes (23) in a penetrating mode, and the multi-rib frame (13) is detachably connected with the lower inclined channel (5) through the inner hexagon bolts (24).
5. A natural-like sloped fish way according to claim 1, in which: the multi-rib plate frame (13) is provided with a plurality of special-shaped ribs (25), and arc-shaped pits (26) are processed among the special-shaped ribs (25).
6. A natural-like sloped fish way according to claim 1, in which: water-blocking plates (27) are uniformly distributed on the outer edge of the water-blocking wheel (16), and the number of the water-blocking plates (27) is 4-8.
7. A fish feeding method using a natural slope-like fishway according to any one of claims 1 to 6, characterized in that it comprises the steps of:
step1: operating a multistage oil cylinder (8) according to the requirements of fish in a water layer to be collected, and selectively controlling the opening of an inlet baffle (9) through the multistage oil cylinder (8);
step2: fish in the corresponding water layer enter the rest pool (1) through the multi-layer fish inlet (7) through the upper inclined channel (4) and the upper bending channel (2);
step3: providing rest places for fishes through pebbles (14) at the bottom of the rest pool (1);
step4: starting a night visual camera (17) at the top of the rest pool (1), collecting images of fish in the rest pool (1), and recording the activity condition.
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108708356A (en) * | 2018-07-05 | 2018-10-26 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of hole side water-permeable fishway import water charging system setting water blocking pier |
| CN109997808A (en) * | 2019-04-30 | 2019-07-12 | 唐山多玛乐园旅游文化有限公司 | A kind of keel type intelligence catches swimming fish device |
| CN110080179B (en) * | 2019-05-14 | 2021-04-20 | 三峡大学 | Shunting fixed-point type fish dam-crossing facility for improving migration survival rate and using method |
| CN110761255A (en) * | 2019-10-17 | 2020-02-07 | 天津大学 | Channel-type adjustable fishway applied to water ecological restoration and fish passing method |
| CN113265989B (en) * | 2021-05-08 | 2022-06-07 | 中国长江三峡集团有限公司 | Multi-stage speed-changing buffer type fishway and buffering method |
| CN113279363B (en) * | 2021-05-27 | 2022-06-07 | 中国长江三峡集团有限公司 | Intelligent regulation and control device for fish migration and operation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6155746A (en) * | 1996-06-01 | 2000-12-05 | Peters; Hans Wilhelm | Fish ladder and its construction |
| CN203320495U (en) * | 2013-01-23 | 2013-12-04 | 宋东辉 | Fish lock |
| CN207727533U (en) * | 2018-01-08 | 2018-08-14 | 三峡大学 | A kind of imitative natural style slope fish pass |
-
2018
- 2018-01-08 CN CN201810015887.XA patent/CN108118667B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6155746A (en) * | 1996-06-01 | 2000-12-05 | Peters; Hans Wilhelm | Fish ladder and its construction |
| CN203320495U (en) * | 2013-01-23 | 2013-12-04 | 宋东辉 | Fish lock |
| CN207727533U (en) * | 2018-01-08 | 2018-08-14 | 三峡大学 | A kind of imitative natural style slope fish pass |
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