Water conservancy project fish passing system

Abstract

The utility model discloses a water conservancy project fish passing system which comprises a dam intercepted in water flow, a fish trapping system, a fish releasing system, a transportation dam passing system and a transfer system, the fish trapping system is arranged in downstream water flow of the dam and used for collecting fishes, and the fish releasing system is arranged in upstream water flow of the dam and used for releasing the collected fishes. The transportation dam-passing system is arranged across the upstream and downstream of the dam, and the transfer systems are arranged between the fish trapping system along the bank and the downstream end of the transportation dam-passing system and between the fish releasing system and the upstream end of the transportation dam-passing system. The transportation dam-passing system adopts the cable car principle, the using amount of mechanical equipment and fixing structures of the mechanical equipment is small, the transportation time is short, the transportation efficiency and the fish survival rate can be improved, and the obvious cost advantage is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of water conservancy fish passing systems, belong to water conservancy and hydropower engineering technical field. BACKGROUND

[0002] Fish passing facility refers to the fish gathering by fish attracting measures, and the fish is transported over dam by simulating natural migration channel or artificial, to help the fish that is blocked to pass water dam smoothly. It is crucial to protect river fish ecological balance and slow down the influence of water conservancy facilities on upstream and downstream fish.

[0003] Common fish passing facilities are generally divided into active upstreaming type and artificial auxiliary type, active upstreaming type refers to fishway and natural passage prevention, which is suitable for low water head engineering, for example, fishway is suitable for low water head hydropower engineering with less than 60m water head difference between upstream and downstream;Artificial auxiliary type refers to fish lifting machine, fish lock, net catching over dam, which is a fish transporting facility, and is suitable for medium and high water head engineering.

[0004] Fish lock has relatively large structure, which has great influence on main building arrangement, cannot continuously pass fish, and has poor adaptability to water level amplitude between upstream and downstream;Fish lifting machine scheme also cannot continuously pass fish, and has high cost of mechanical equipment, but has strong adaptability to water level amplitude;Fish transporting system is relatively independent, and has flexible arrangement, and has strong adaptability to water level amplitude, but fish passing effect is greatly influenced by human management. Artificial auxiliary type usually needs to carry fish transporting ship or live fish transport vehicle to realize transfer from downstream to upstream, and for high dam, fish passing efficiency is not high, and mechanical and civil engineering cost is high. Therefore, a kind of water conservancy fish passing system is proposed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of water conservancy fish passing system, which has short transportation time, can improve transportation efficiency and fish survival rate.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme: a kind of water conservancy fish passing system, comprising dam intercepted in water flow, further comprising:

[0007] Fish trapping system, the fish trapping system is arranged in downstream water flow of dam for collecting fish, can use power generation tail water of power plant hydroelectric generator set as fish attracting water flow, without artificially creating water condition, saving investment;

[0008] Fish releasing system, the fish releasing system is arranged in upstream water flow of dam for releasing collected fish;

[0009] Transportation over dam system, the transportation over dam system is arranged across upstream and downstream of dam, can transport collected fish across dam;

[0010] The transfer system comprises at least two sets, which are respectively arranged between the shore of the fishing system and the downstream end of the transport over-dam system and between the fish releasing system and the upstream end of the transport over-dam system, and are used for transport between the fishing system and the transport over-dam system and between the fish releasing system and the transport over-dam system.

[0011] The aforementioned fish-passing system of a water conservancy project, the fish-luring system includes a floating fish-collecting platform, the floating fish-collecting platform floats in the water flow downstream of the dam, and the side wall of the floating fish-collecting platform is provided with an adjustable-length fish-collecting rope, the fish-collecting rope is fixed to the shore downstream of the dam, and the bottom of the floating fish-collecting platform is provided with an adjustable-length hanging rope, the hanging rope is provided with a trapping device, and the trapping device is immersed in the water flow.

[0012] The aforementioned fish-passing system for a water conservancy project, wherein the floating fish-collecting platform is formed by connecting a number of detachable float tubes, the trapping device is a grid-type fishing cage and / or a net bag, and an underwater infrared monitoring camera is provided at the bottom of the floating fish-collecting platform.

[0013] The aforementioned fish-passing system for a water conservancy project comprises a fish-releasing platform, which is floated in the water flow upstream of the dam, and a fish-releasing rope with adjustable length is provided on the side wall of the fish-releasing platform, which is fixed on the shore upstream of the dam. The fish-releasing system is composed of several floating tubes connected together.

[0014] The aforementioned fish-passing system of a water conservancy project, the transport and dam-crossing system includes a power wheel and a slewing wheel, the power wheel and the slewing wheel are respectively set up on both sides of the dam, a rotatable traction ropeway is arranged between the power wheel and the slewing wheel, a cable car is arranged on the traction ropeway, and the power wheel is connected to the power system.

[0015] In the aforementioned fish passage system for a water conservancy project, a bracket is provided on the top of the dam, and the bracket is supported below the traction cableway.

[0016] The aforementioned fish transfer system for a water conservancy project, the transfer system includes a fish collecting box and a lifting trolley, the fish collecting box and the lifting trolley are placed along the shore of the fish luring system and the shore of the fish releasing system, the lifting trolley is equipped with a hydraulic automatic grab beam, the fish collecting box can be transported by the lifting trolley and loaded and unloaded on the cable car.

[0017] The aforementioned fish passing system for water conservancy projects has a fish inlet on the top surface of the fish collecting box that can be opened and closed automatically, a fish outlet on the bottom of the side wall of the fish collecting box that can be opened and closed automatically, and a small hole on the top of the fish collecting box.

[0018] In the aforementioned fish passage system for a water conservancy project, an oxygenation system is provided on the top of the fish collecting box, and a water quality monitoring system is provided inside the fish collecting box.

[0019] In the aforementioned fish passage system of a water conservancy project, the fish collecting box is also provided with a water supply system, and the water supply system is equipped with a sand filter device.

[0020] Compared with the existing technology, the transportation system across the dam of the present invention adopts the cable car principle. Compared with the traditional fish lift and fish collection and transportation system, the mechanical equipment and its fixed structure are less used; the transportation process of the present invention is sustainable, especially under the condition that there are river valleys and mountains before and after the dam, the transportation time is short, and the transportation efficiency and fish survival rate can be improved; the present invention can use the same system to transport fish from bottom to top and from top to bottom across the dam, saving investment, especially in the environment of high dams and mountains on both sides, with obvious cost advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the plan layout of the utility model;

[0022] Figure 2 This is a schematic structural diagram of the utility model's fish trapping system;

[0023] Figure 3 It is a structural schematic diagram of the fish collecting box of the present utility model.

[0024] Figure numerals: 1-dam, 2-fish luring system, 201-floating fish collecting platform, 202-fish collecting rope, 203-hanging rope, 204-trapping device, 3-fish releasing system, 301-fish releasing platform, 302-fish releasing rope, 4-transportation system across the dam, 401-power wheel, 402-rotating wheel, 403-traction ropeway, 404-cable car, 405-bracket, 406-power system, 5-transfer system, 501-fish collecting box, 502-hoisting trolley, 503-hydraulic automatic grab beam, 504-fish inlet, 505-fish outlet.

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. DETAILED DESCRIPTION

[0026] Embodiment 1 of the present invention: A fish passage system for a hydraulic project, comprising a dam 1 intercepting a water flow, and further comprising:

[0027] Fish trapping system 2 is set in the water flow downstream of dam 1 to collect fish. The tailwater of the power plant's turbine generator set can be used as the fish trapping water flow, without artificially creating water flow conditions, thus saving investment;

[0028] The fish releasing system 3 is provided in the water flow upstream of the dam 1 and is used to release the collected fish;

[0029] The transport over-dam system 4 is arranged across the upstream and downstream of the dam 1, and can transport the collected fish across the dam 1;

[0030] The transfer system 5 includes at least two transfer systems 5 , which are respectively arranged between the shore of the fishing luring system 2 and the downstream end of the transport over-dam system 4 and between the fish releasing system 3 and the upstream end of the transport over-dam system 4 , and are used for transport between the fishing system 2 and the transport over-dam system 4 and between the fish releasing system 3 and the transport over-dam system 4 .

[0031] The fish trapping system 2 captures fish and transports them to the transport-over-dam system 4 through the transfer system 5. The fish are transported across the dam 1 to the upstream through the transport-over-dam system 4. The fish transported by the transport-over-dam system 4 are transferred to the fish release system 3 through the upstream transfer system 5, and the fish are released into the water, completing the transfer process.

[0032] Embodiment 2 of the present invention: A fish passage system for a hydraulic project, comprising a dam 1 intercepting a water flow, and further comprising:

[0033] The fish trapping system 2 is set in the water flow downstream of the dam 1 for collecting fish, wherein the fish trapping system 2 includes a floating fish collecting platform 201, which is floated in the water flow downstream of the dam 1, and the side wall of the floating fish collecting platform 201 is provided with an adjustable length fish collecting rope 202, which is fixed to the bank downstream of the dam 1. The length of the fish collecting rope 202 is adjustable, so that the floating position of the floating fish collecting platform 201 can be freely set to ensure the fish trapping effect, and the floating fish collecting platform 201 can be docked. The bottom of the floating fish collecting platform 201 is provided with an adjustable length hanging rope 203, and the hanging rope 203 is provided with an adjustable length. 3 is equipped with a trapping device 204, which is immersed in the water flow. The height of the hanging rope 203 can be adjusted according to the survival depth of different fish species. The floating fish gathering platform 201 is composed of several detachable floating tubes. The trapping device 204 is a grid-type fishing cage and / or net bag containing fish bait, which can be set in multiple sizes. An underwater infrared monitoring camera is installed at the bottom of the floating fish gathering platform 201. When a large number of fish are caught, the floating fish gathering platform 201 is pulled to the shore. The fishing luring system 2 is arranged downstream and can use the tailwater of the power plant's hydro-turbine generator set as the fish luring water flow, eliminating the need for artificial water flow conditions and saving investment.

[0034] The fish releasing system 3 is provided in the water flow upstream of the dam 1 and is used to release the collected fish;

[0035] The transport over-dam system 4 is arranged across the upstream and downstream of the dam 1, and can transport the collected fish across the dam 1;

[0036] The transport system 5 is provided with at least two sets, and the two sets of transport system 5 are respectively arranged between the fish trapping system 2 and the downstream end of the fish transporting dam-crossing system 4 and between the fish releasing system 3 and the upstream end of the fish transporting dam-crossing system 4, and are used for transporting the fish between the fish trapping system 2 and the fish transporting dam-crossing system 4 and transporting the fish between the fish releasing system 3 and the fish transporting dam-crossing system 4.

[0037] The fish trapping system 2 traps the fish, the fish is transported to the fish transporting dam-crossing system 4 through the transport system 5, the fish transported by the fish transporting dam-crossing system 4 is transported to the fish releasing system 3 through the transport system 5 on the upstream of the dam 1, and the fish is released into the water, so that the transport process is completed.

[0038] Embodiment 3 of the utility model: a fish passing system of hydraulic engineering, including dam 1 intercepting in water flow, still include:

[0039] The fish trapping system 2 is arranged in the downstream water flow of the dam 1 and is used for collecting fish, wherein the fish trapping system 2 includes a floating fish collecting platform 201, the floating fish collecting platform 201 is floated in the downstream water flow of the dam 1, and the side wall of the floating fish collecting platform 201 is provided with fish collecting ropes 202 with adjustable length, the fish collecting ropes 202 are fixed on the downstream bank of the dam 1, the length of the fish collecting ropes 202 is adjustable, the floating position of the floating fish collecting platform 201 is freely set, the fish attracting effect is ensured, and the floating fish collecting platform 201 can be docked, the bottom of the floating fish collecting platform 201 is provided with hanging ropes 203 with adjustable length, the hanging ropes 203 are provided with trapping devices 204, the trapping devices 204 are immersed in the water flow, the height of the hanging ropes 203 can be adjusted according to the survival depth of different fish species, the floating fish collecting platform 201 is connected by a plurality of floating cylinders, and the floating cylinders are detachable, the trapping devices 204 are fish cages and / or net bags in a grid format, fish lures are contained therein, a plurality of sizes can be set, the bottom of the floating fish collecting platform 201 is provided with an underwater infrared monitoring camera, when the amount of trapped fish is observed to be large, the floating fish collecting platform 201 is pulled to the bank, the fish trapping system 2 is arranged on the downstream, the tail water of the power plant water turbine generator set can be used as the fish attracting water flow, the flow water condition does not need to be artificially created, and investment is saved.

[0040] The fish releasing system 3 is arranged in the upstream water flow of the dam 1 and is used for releasing the collected fish, the fish releasing system 3 includes a fish releasing platform 301, the fish releasing platform 301 is floated in the upstream water flow of the dam 1, and the side wall of the fish releasing platform 301 is provided with fish releasing ropes 302 with adjustable length, the fish releasing ropes 302 are fixed on the upstream bank of the dam 1, and the fish releasing system 3 is connected by a plurality of floating cylinders.

[0041] The fish transporting dam-crossing system 4 is arranged across the upstream and downstream of the dam 1 and can transport the collected fish across the dam 1.

[0042] The transfer system 5 includes at least two transfer systems 5 , which are respectively arranged between the shore of the fishing luring system 2 and the downstream end of the transport over-dam system 4 and between the fish releasing system 3 and the upstream end of the transport over-dam system 4 , and are used for transport between the fishing system 2 and the transport over-dam system 4 and between the fish releasing system 3 and the transport over-dam system 4 .

[0043] The fish trapping system 2 captures fish and transports them to the transport-over-dam system 4 through the transfer system 5. The fish are transported across the dam 1 to the upstream through the transport-over-dam system 4. The fish transported by the transport-over-dam system 4 are transferred to the fish release system 3 through the upstream transfer system 5, and the fish are released into the water, completing the transfer process.

[0044] Embodiment 4 of the present invention: A fish passage system for a hydraulic project, comprising a dam 1 intercepting a water flow, and further comprising:

[0045] The fish trapping system 2 is set in the water flow downstream of the dam 1 for collecting fish, wherein the fish trapping system 2 includes a floating fish collecting platform 201, which is floated in the water flow downstream of the dam 1, and the side wall of the floating fish collecting platform 201 is provided with an adjustable length fish collecting rope 202, which is fixed to the bank downstream of the dam 1. The length of the fish collecting rope 202 is adjustable, so that the floating position of the floating fish collecting platform 201 can be freely set to ensure the fish trapping effect, and the floating fish collecting platform 201 can be docked. The bottom of the floating fish collecting platform 201 is provided with an adjustable length hanging rope 203, and the hanging rope 203 is provided with an adjustable length. 3 is equipped with a trapping device 204, which is immersed in the water flow. The height of the hanging rope 203 can be adjusted according to the survival depth of different fish species. The floating fish gathering platform 201 is composed of several detachable floating tubes. The trapping device 204 is a grid-type fishing cage and / or net bag containing fish bait, which can be set in multiple sizes. An underwater infrared monitoring camera is installed at the bottom of the floating fish gathering platform 201. When a large number of fish are caught, the floating fish gathering platform 201 is pulled to the shore. The fishing luring system 2 is arranged downstream and can use the tailwater of the power plant's hydro-turbine generator set as the fish luring water flow, eliminating the need for artificial water flow conditions and saving investment.

[0046] Fish release system 3 is provided in the upstream water flow of dam 1 for releasing collected fish. Fish release system 3 includes a fish release platform 301, which floats in the upstream water flow of dam 1. Adjustable fish release ropes 302 are provided on the sidewalls of fish release platform 301. Fish release ropes 302 are fixed to the shore upstream of dam 1. Fish release system 3 is composed of a plurality of floating tubes connected together.

[0047] The transport over-dam system 4 is arranged across the upstream and downstream of the dam 1 and can transport the collected fish across the dam 1. The transport over-dam system 4 includes a power wheel 401 and a rotary wheel 402. The power wheel 401 and the rotary wheel 402 are respectively arranged on both sides of the dam 1. A rotatable traction ropeway 403 is arranged between the power wheel 401 and the rotary wheel 402. A cable car 404 is arranged on the traction ropeway 403. The power wheel 401 is connected to the power system 406. A bracket 405 is provided on the top of the dam 1, and the bracket 405 is supported below the traction ropeway 403.

[0048] The transfer system 5 includes at least two transfer systems 5 , which are respectively arranged between the shore of the fishing luring system 2 and the downstream end of the transport over-dam system 4 and between the fish releasing system 3 and the upstream end of the transport over-dam system 4 , and are used for transport between the fishing system 2 and the transport over-dam system 4 and between the fish releasing system 3 and the transport over-dam system 4 .

[0049] The fish trapping system 2 captures fish and transports them to the transport-over-dam system 4 through the transfer system 5. The fish are transported across the dam 1 to the upstream through the transport-over-dam system 4. The fish transported by the transport-over-dam system 4 are transferred to the fish release system 3 through the upstream transfer system 5, and the fish are released into the water, completing the transfer process.

[0050] Embodiment 5 of the present invention: A fish passage system for a hydraulic project, comprising a dam 1 intercepting a water flow, and further comprising:

[0051] The fish trapping system 2 is set in the water flow downstream of the dam 1 for collecting fish, wherein the fish trapping system 2 includes a floating fish collecting platform 201, which is floated in the water flow downstream of the dam 1, and the side wall of the floating fish collecting platform 201 is provided with an adjustable length fish collecting rope 202, which is fixed to the bank downstream of the dam 1. The length of the fish collecting rope 202 is adjustable, so that the floating position of the floating fish collecting platform 201 can be freely set to ensure the fish trapping effect, and the floating fish collecting platform 201 can be docked. The bottom of the floating fish collecting platform 201 is provided with an adjustable length hanging rope 203, and the hanging rope 203 is provided with an adjustable length. 3 is equipped with a trapping device 204, which is immersed in the water flow. The height of the hanging rope 203 can be adjusted according to the survival depth of different fish species. The floating fish gathering platform 201 is composed of several detachable floating tubes. The trapping device 204 is a grid-type fishing cage and / or net bag containing fish bait, which can be set in multiple sizes. An underwater infrared monitoring camera is installed at the bottom of the floating fish gathering platform 201. When a large number of fish are caught, the floating fish gathering platform 201 is pulled to the shore. The fishing luring system 2 is arranged downstream and can use the tailwater of the power plant's hydro-turbine generator set as the fish luring water flow, eliminating the need for artificial water flow conditions and saving investment.

[0052] Fish release system 3 is provided in the upstream water flow of dam 1 for releasing collected fish. Fish release system 3 includes a fish release platform 301, which floats in the upstream water flow of dam 1. Adjustable fish release ropes 302 are provided on the sidewalls of fish release platform 301. Fish release ropes 302 are fixed to the shore upstream of dam 1. Fish release system 3 is composed of a plurality of floating tubes connected together.

[0053] The transport over-dam system 4 is arranged across the upstream and downstream of the dam 1 and can transport the collected fish across the dam 1. The transport over-dam system 4 includes a power wheel 401 and a rotary wheel 402. The power wheel 401 and the rotary wheel 402 are respectively arranged on both sides of the dam 1. A rotatable traction ropeway 403 is arranged between the power wheel 401 and the rotary wheel 402. A cable car 404 is arranged on the traction ropeway 403. The power wheel 401 is connected to the power system 406. A bracket 405 is provided on the top of the dam 1, and the bracket 405 is supported below the traction ropeway 403.

[0054] The transfer system 5 includes at least two transfer systems 5 , which are respectively arranged between the shore of the fishing luring system 2 and the downstream end of the transport over-dam system 4 and between the fish releasing system 3 and the upstream end of the transport over-dam system 4 , and are used for transport between the fishing system 2 and the transport over-dam system 4 and between the fish releasing system 3 and the transport over-dam system 4 . Among them, the transfer system 5 includes a fish collecting box 501 and a lifting trolley 502. The fish collecting box 501 and the lifting trolley 502 are placed along the shore of the fish luring system 2 and the shore of the fish releasing system 3. The lifting trolley 502 is equipped with a hydraulic automatic grab beam 503. The fish collecting box 501 can be transported by the lifting trolley 502 and loaded and unloaded on the cable car 404. Lifting ears and alignment devices are set on both sides of the top of the fish collecting box 501 for use with the hydraulic automatic grab beam 503. The top surface of the fish collecting box 501 is provided with a fish inlet 504 that can be opened and closed automatically, and the bottom of the side wall of the fish collecting box 501 is provided with a fish outlet 505 that can be opened and closed automatically, and a small hole is provided on the top of the fish collecting box 501. An oxygenation system is provided on the top of the fish collecting box 501, a water quality monitoring system is provided in the fish collecting box 501, and the fish collecting box 501 is also provided with a water supply system, which is equipped with a sand filtration device.

[0055] Fish are captured by the fishing system 2 and transported via the transfer system 5 to the transport-over-dam system 4. This transport system 4 then carries the fish across the dam 1 upstream. The upstream transfer system 5 then transfers the fish from the transport-over-dam system 4 to the fish release system 3, where they are released into the water, completing the transport process. This technical solution transports fish across the dam from downstream to upstream. Similarly, the release system 3 and the fishing system 2 can be swapped to transport fish from upstream to downstream, sharing a common transport system. The release system 3 and the fishing system 2 can also be interchanged and reused within the transport system, significantly saving investment.

[0056] The working principle of an embodiment of the present invention is as follows: when the present invention is in use, the floating fish-collecting platform 201 is floated in the water flow downstream of the dam 1, the length of the fish-collecting rope 202 is adjusted, the floating position of the floating fish-collecting platform 201 is adjusted, and the height of the hanging rope 203 is adjusted to adjust the depth of the trapping device 204 according to the survival depth of different fish species. The trapping device 204 is a grid-type fishing cage and / or a net bag containing fish bait, which can be set in multiple sizes. When the underwater infrared monitoring camera observes that the amount of fish caught is large, the length of the fish-collecting rope 202 is adjusted. The floating fish aggregating platform 201 is pulled to the shore, and the fish inlet 504 of the fish aggregating box 501 is opened. The downstream lifting trolley 502 uses the hydraulic automatic grab beam 503 to lift the floating fish aggregating platform 201, so that the fish in the trapping device 204 at the bottom of the floating fish aggregating platform 201 are placed into the fish aggregating box 501. The floating fish aggregating platform 201 is then unloaded back to its original position. The top of the fish aggregating box 501 has small holes for ventilation. The fish aggregating box 501 is equipped with an oxygenation system, a water quality monitoring system, a water supply system, and a sand filter to ensure the survival rate of the fish in the fish aggregating box 501.

[0057] The downstream lifting trolley 502 transports the fish collecting box 501 to the cable car 404 through the hydraulic automatic grab beam 503. The power system 406 includes power devices such as motors, which drive the power wheel 401, the slewing wheel 402, and the traction ropeway 403 to rotate. The traction ropeway 403 drives the cable car 404 to move for transportation. After the cable car 404 transports the fish collecting box 501 upstream, the upstream lifting trolley 502 transports the fish collecting box 501 to the fish release platform 301, adjusts the floating position of the fish release platform 301 by the fish release rope 302, and the fish collecting box 501 opens the fish outlet 505 to release the fish, completing the fish transfer.

Claims

1. A fish passage system for a hydraulic project, comprising a dam (1) intercepting a water flow, characterized in that: Also includes: a fish trapping system (2), the fish trapping system (2) being arranged in the water flow downstream of the dam (1) for collecting fish; a fish releasing system (3), the fish releasing system (3) being arranged in the water flow upstream of the dam (1) for releasing the collected fish; A transport over-dam system (4), the transport over-dam system (4) being arranged across the upstream and downstream of the dam (1) and capable of transporting the collected fish across the dam (1); A transfer system (5) is provided, wherein at least two transfer systems (5) are provided. The two transfer systems (5) are respectively provided between the shore of the fishing system (2) and the downstream end of the transport over-dam system (4), and between the fish releasing system (3) and the upstream end of the transport over-dam system (4), and are used for transporting fish between the fishing system (2) and the transport over-dam system (4), and between the fish releasing system (3) and the transport over-dam system (4).

2. A water conservancy project fish passage system according to claim 1, characterized in that: The fish trapping system (2) comprises a floating fish trapping platform (201), the floating fish trapping platform (201) is floated in the water flow downstream of the dam (1), and the side wall of the floating fish trapping platform (201) is provided with a fish trapping rope (202) of adjustable length, the fish trapping rope (202) is fixed to the bank downstream of the dam (1), and the bottom of the floating fish trapping platform (201) is provided with a hanging rope (203) of adjustable length, the hanging rope (203) is provided with a trapping device (204), and the trapping device (204) is immersed in the water flow.

3. A water conservancy project fish passage system according to claim 2, characterized in that: The floating fish gathering platform (201) is formed by connecting a plurality of detachable floating tubes. The trapping device (204) is a grid-type fishing cage and / or a net bag. An underwater infrared monitoring camera is provided at the bottom of the floating fish gathering platform (201).

4. A fish passage system for water conservancy projects according to claim 3, characterized in that: The fish release system (3) comprises a fish release platform (301), which is floated in the water flow upstream of the dam (1), and a fish release rope (302) with an adjustable length is provided on the side wall of the fish release platform (301), which is fixed to the upstream bank of the dam (1). The fish release system (3) is formed by connecting a plurality of floating cylinders.

5. A fish passage system for water conservancy projects according to claim 4, characterized in that: The transport over-dam system (4) comprises a power wheel (401) and a rotary wheel (402), wherein the power wheel (401) and the rotary wheel (402) are respectively arranged on both sides of the dam (1), a cyclically rotatable traction ropeway (403) is arranged between the power wheel (401) and the rotary wheel (402), a cable car (404) is arranged on the traction ropeway (403), and the power wheel (401) is connected to a power system (406).

6. A fish passage system for water conservancy projects according to claim 5, characterized in that: The dam (1) is provided with a support (405) on the top of the dam, and the support (405) is supported below the traction ropeway (403).

7. A fish passage system for water conservancy projects according to claim 6, characterized in that: The transfer system (5) includes a fish collecting box (501) and a lifting trolley (502). The fish collecting box (501) and the lifting trolley (502) are placed along the shore of the fish trapping system (2) and the shore of the fish releasing system (3). The lifting trolley (502) is equipped with a hydraulic automatic grab beam (503). The fish collecting box (501) can be transported by the lifting trolley (502) and loaded and unloaded on a cable car (404).

8. A fish passage system for water conservancy projects according to claim 7, characterized in that: The top surface of the fish collecting box (501) is provided with a fish inlet (504) that can be opened and closed automatically, the bottom of the side wall of the fish collecting box (501) is provided with a fish outlet (505) that can be opened and closed automatically, and a small hole is provided on the top of the fish collecting box (501).

9. A fish passage system for water conservancy projects according to claim 8, characterized in that: An oxygenation system is provided on the top of the fish collecting box (501), and a water quality monitoring system is provided inside the fish collecting box (501).

10. The fish passage system for water conservancy projects according to claim 9, characterized in that: The fish collecting box (501) is also provided with a water supply system, and the water supply system is equipped with a sand filter device.

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