CN116289813A - System and method for gathering and transporting fish with tail water of hydropower station fixed in mountain gorge region - Google Patents

Abstract

The invention discloses a fish gathering and transporting system and method for fixing tail water of a hydropower station in a high mountain gorge valley region, and relates to the technical field of hydraulic engineering, wherein the fish gathering and transporting system comprises a fish gathering station and a fish gathering facility which are arranged at the tail water of the hydropower station in the high mountain gorge valley region, and the fish gathering facility comprises a fish gathering box, a fish gathering pool, a lifting system and a loading facility; the fish collecting system is fixed at the tail water of the hydropower station in the mountain gorge region, so that a good fish collecting effect can be achieved by arranging the fish collecting system in a tail water dense region, a water discharge task in a main river channel flood discharge period can be avoided, and the safety of fish in the flood discharge period is ensured; in addition, tail water with low total dissolved gas saturation is introduced into the fish collecting position, so that the fish can be effectively prevented from suffering from bubble diseases.

Description

System and method for gathering and transporting fish with tail water of hydropower station fixed in mountain gorge region

Technical Field

The invention relates to the technical field of hydraulic engineering, in particular to a fish gathering and transporting system and method for fixing tail water of hydropower stations in mountain gorge areas.

Background

The hydraulic and hydroelectric engineering has comprehensive benefits such as flood control, power generation shipping and the like, but as the water energy resource of China is continuously developed, the hydraulic engineering performs river blocking and damming on a natural river, so that the connectivity of the natural river and a migration channel with fish can be influenced, and the problems of degradation of a comprehensive ecological system of the river, damage to the fish habitat and the like are caused. The fish passing facilities are connected with the upstream and the downstream of the dam to help fish migration to restore connectivity of the river and reduce influence of dam blocking on fish.

The earliest fish passing facilities in the world are fishways built about 300 years ago in France, and then the related fields at home and abroad explore the operation effects of different fish passing facilities. Fish facilities such as fishways, fish lifts, fish gates and the like are limited by dam types and regional site selection, and the operation of main engineering can be influenced. The fish gathering and transporting system is used as a fish passing facility for realizing fish passing through a dam through artificial fish gathering and transporting, and has the advantages of flexibility, small fish passing force consumption and the like.

Most of hydraulic engineering in China is concentrated in the valley river section in southwest mountain area, the terrain of the area is complex, the land level difference is large, the river form is changed much, and the fish gathering and transporting system is difficult to be arranged in the area in a concentrated mode. In addition, during the flood discharge of the high dam, the flood discharge amount is large, the impact of the discharge flow of the main river reach on the fishes at the downstream is large, and the phenomenon of supersaturation of total dissolved gas existing during the water discharge of the high dam can cause the fishes at the downstream to suffer from bubble diseases and even die.

Research shows that the position selection of the fish collecting station in the fish collecting and transporting system is the key of the engineering design of fish facilities, and the fish collecting and transporting system needs to be arranged on the upstream of a successful migration route of fish to enable the fish to quickly and accurately enter a fish collecting port, so that the fish collecting target is achieved. The choice of the location of the fish gathering mouth in the fish gathering system is also an important factor in assessing success or failure of the fish gathering system.

In the existing process of implementing the fish gathering and transporting system, although the fish gathering and transporting system is not limited by dam types and terrains, the fish gathering and transporting system is greatly influenced by fish attracting effects, and the method for correctly selecting the concentrated arrangement positions of the fish gathering and transporting system in hydropower stations in mountain gorge areas can ensure the fish gathering effect in flood discharge period and the safety of fishes at the downstream of the dam, so that the problem to be solved is urgent.

Disclosure of Invention

The invention aims to solve the problems and provide a fish gathering and transporting system and a fish gathering and transporting method for fixing tail water of a hydropower station in a high mountain gorge region, wherein the fish gathering system is fixed at the tail water of the hydropower station in the high mountain gorge region, so that a good fish gathering effect can be achieved by arranging the fish gathering system in a tail water dense region, a water draining task in a main river flood draining period can be avoided, and fish safety in the flood draining period is ensured; in addition, tail water with low total dissolved gas saturation is introduced into the fish collecting position, so that the fish can be effectively prevented from suffering from bubble diseases.

In order to achieve the above purpose, the technical scheme of the invention is as follows: the fish gathering and transporting system comprises a fish gathering station arranged at the tail water of the hydropower station in the mountain gorge valley region, wherein the fish gathering station is provided with a fish gathering facility, and the fish gathering facility comprises a fish gathering box, a fish gathering pool, a lifting system and a loading facility;

the fish collecting pond is provided with a plurality of fish inlets, flow guide piers positioned among the fish inlets, fish blocking facilities and an escape preventing cage positioned at the fish inlets, the fish blocking facilities are positioned at one side of the fish collecting pond facing the tail water of power generation, and the fish inlets are arranged at the downstream side of the fish collecting pond;

the loading facility comprises a professional fish transporting vehicle and a fish transporting box arranged at the top of the professional fish transporting vehicle, the top of the fish transporting box is connected with a temporary rearing pond through a loading pipeline, and the inlet end of the temporary rearing pond is connected with a fish chute;

the lifting facility is arranged above the fish collecting pond and comprises a tail water gate, and a lifting lug which is arranged right above the fish collecting box is arranged at the bottom of the free end of the tail water gate; the tail water gate is connected with the fish collecting tank through the lifting lug, and the fish collecting tank is lifted and lowered to the fish collecting tank or lifted and lifted to the inlet end of the fish chute far away from the temporary culture tank.

In the scheme, when the fish collecting system is used for collecting fish, the fish collecting box is lifted and placed into a fish collecting pond through the tail water gate machine, the continuous fish collecting time is set, tail water with low total dissolved gas saturation is introduced at the fish collecting position for collecting fish, and the fish is collected and induced into the fish collecting box through the fish inlet of the fish collecting box; after the set continuous fish collecting time is reached, lifting the fish collecting box to a fish sliding groove through a tail water gate machine, and opening a discharging channel of the fish collecting box to enable fish to enter a temporary rearing pond through the fish sliding groove for sorting; then enabling the sorted fish to enter a fish transporting box through a loading pipeline to realize fish loading; after loading, the fish is transported by the fish transporting vehicle.

Further, 2 fish collecting cages are transversely arranged in the fish collecting box, rectangular anti-escape inlets are formed in the fish collecting cages, the bottom surface of the inside of the fish collecting box is of an inclined structure, a water storage area is formed in the bottom end of the inside of the fish collecting box, and the height of the water storage area is 0.2-0.3m.

In the scheme, the rectangular escape-preventing inlet of the fish-collecting cage is convenient for preventing fishes entering the fish-collecting cage from escaping the fish-collecting cage; the inside bottom surface of fish gathering case is the slope structure, does benefit to and forms the water storage district in the inside bottom of fish gathering case, through the water storage district, is convenient for transport fish system keep fish healthy survival at the promotion in-process.

Further, the fish collecting pond is provided with a guide groove from the fish inlet to the inside of the fish collecting pond, and the cross section area of the guide groove is gradually reduced from the fish inlet to the inside of the fish collecting pond.

In this scheme, the guide slot of fish inlet is convenient for rivers and the import of fish, and the cross sectional area of guide slot is reduced by fish inlet department to album fish pond inboard step by step, is convenient for increase the velocity of flow that rivers got into by the fish inlet, can help fish migration.

Further, the fish blocking facility is a fish blocking electric field.

In the scheme, in the fish collecting process, a fish blocking electric field is started, so that fish can be prevented from entering the upstream through the tail water of power generation.

Further, a barrier dividing the interior of the fish transporting box into a plurality of areas is arranged in the fish transporting box.

In the scheme, the inner part of the fish transporting box is divided into a plurality of areas by the barrier for transporting different kinds of fishes.

Further, a valve is arranged on the loading pipeline.

In this scheme, through the valve, be convenient for open the loading pipeline, make fish get into fortune fish box, realize fish loading.

Further, the fish collecting station further comprises a first platform and a second platform, the first platform is higher than the second platform, the temporary rearing pond and the fish chute are located on the first platform, the initial position of the fish collecting box is located on the first platform, the fish transporting vehicle is located on the second platform, and the fish collecting pond is located below the edge of the second platform.

In the scheme, the fish in the fish collecting box is conveniently collected and attracted to carry out sorting operation, and the sorted fish is ensured to be automatically loaded into the fish collecting box under the action of gravity.

Further, the fish transporting vehicle is provided with a release hose; the fish transporting vehicle is provided with a vitamin device, and the fish transporting box is provided with an interface for connecting the vitamin device.

In the scheme, the operation of releasing fish is convenient to realize through the releasing hose; through the interface connection on vitamin equipment and the fortune fish case, be convenient for maintain the healthy survival of the fish in the fortune fish case.

Further, the fish transporting vehicle is provided with a positioning and tracking system. In the scheme, the running track of the fish transporting vehicle is convenient to track, record and monitor in real time.

The invention also provides a fish collecting method of the fish collecting and transporting system with the tail water of the hydropower station fixed in the mountain gorge region, which comprises the following steps:

s1, building a fish collecting station in a hydropower station tail water fish intensive area in a mountain gorge valley area, and arranging a tail water fish collecting facility at the fish collecting station, wherein the tail water fish collecting facility comprises a fish collecting tank, a fish collecting pond, a lifting system and a loading facility, the lifting system is a tail water door machine arranged above the fish collecting pond and used for lifting the fish collecting tank, the loading facility comprises a professional fish transporting vehicle and a fish transporting box connected with the professional fish transporting vehicle, the fish transporting box is connected with a sorting system through a loading pipeline, and the sorting system consists of a temporary rearing pond and a fish chute connected with the temporary rearing pond;

s2, lifting the fish collecting box by using a tail water gate machine, lowering the fish collecting box into a fish collecting pond, introducing tail water with low total dissolved gas saturation at a fish collecting position to collect and lure fish, setting continuous fish collecting time, and collecting and lure fish into the fish collecting box through a fish inlet of the fish collecting box;

s3, after fish collection is completed, lifting the fish collection box to a fish sliding groove by utilizing a tail water gate machine, opening a discharge channel of the fish collection box, enabling fish to enter a temporary culture pond through the fish sliding groove for sorting, and prolonging sorting time through vitamin equipment of the temporary culture pond;

s4, after sorting is completed, opening a valve on the loading pipeline to enable sorted fishes to enter the fish transporting box through the loading pipeline, so that fish loading is achieved; after loading, the fish transporting vehicle is started, and meanwhile, fish vitamin equipment on the fish transporting vehicle is started to transport fish.

The fish collecting method can solve the problems that the fish attracting effect is greatly influenced in the implementation process of the existing fish collecting system, the water discharging task in the flood discharging period of a main river channel is inconvenient to avoid, and the safety of fish in the flood discharging period is guaranteed; in addition, the fish collecting method of the invention selectively fixes the position of the fish collecting system at the tail water of the hydropower station in the mountain gorge valley region, so that on one hand, the flood discharging task can be considered, the better fish collecting effect can be achieved, and on the other hand, the tail water with lower total dissolved gas saturation is introduced in the fish collecting process, so that the fish can be effectively prevented from suffering from the bubble disease.

Compared with the prior art, the beneficial effect of this scheme:

1. the fish collecting system can be arranged in a concentrated manner in a mountain gorge region, so that flood discharging tasks can be considered, and a good fish collecting effect can be achieved;

2. according to the fish collecting system arranged at the tail water of the hydropower station in the mountain gorge region, the fish attracting effect is good under the water flow condition of the tail water, the saturation of total dissolved gas in the tail water is low, the fish can be prevented from suffering from bubble disease, and downstream fish can be effectively protected.

Drawings

FIG. 1 is an overall layout of a fish gathering system in an embodiment of the invention;

FIG. 2 is a top view of a fish gathering facility in an embodiment of the invention;

FIG. 3 is a graph showing the total dissolved gas saturation distribution of tail water in an embodiment of the present invention;

FIG. 4 is a simulation diagram of the site selection calculation of a fish gathering site of a Wu Dongde hydropower station in an embodiment of the invention;

FIG. 5 is a simulation diagram of the location selection calculation of the fish gathering point of the hydropower station on the beach in the embodiment of the invention.

In the figure: 1. a fish collection box; 2. a fish collecting pond; 3. a fish inlet; 4. a flow guiding pier; 5. an escape prevention cage; 6. a fish blocking electric field; 7. professional fish transporting vehicle; 8. a fish transporting box; 9. a loading pipe; 10. a temporary rearing pond; 11. a fish chute; 12. tail water gate; 13. lifting lugs; 14. a fish collecting cage; 15. a rectangular escape-proof inlet; 16. a water storage area; 17. a guide groove; 18. a first platform; 19. a second platform; 20. a barrier; 21. a valve; 22. a discharge hose; 23. a vitamin device; 24. an interface; 25. a position tracking system.

Detailed Description

In order that those skilled in the art will better understand the present invention, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings, wherein it is to be understood that the illustrated embodiments are merely exemplary of some, but not all, of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, shall fall within the scope of the present invention.

It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The present invention will be described in detail with reference to examples.

Examples:

as shown in fig. 1 and 2, a fish gathering and transporting system for fixing tail water of a hydropower station in a high mountain gorge region comprises a fish gathering station and a fish gathering facility arranged at the tail water of the hydropower station in the high mountain gorge region, wherein the fish gathering facility comprises a fish gathering box 1, a fish gathering pool 2, a lifting system and loading facilities. The fish collecting pond 2 comprises a plurality of fish inlets 3 on the downstream side of the fish collecting pond 2, a flow guiding pier 4 positioned among the fish inlets 3, a fish blocking electric field 6 positioned on the side of the fish collecting pond 2 facing the power generation tail water, and an escape preventing cage 5 positioned at the fish inlets 3, wherein the fish blocking electric field 6 is started in the fish collecting process, so that fish can be prevented from entering the upstream through the power generation tail water conveniently. The loading facility comprises a professional fish transporting vehicle 7 and a fish transporting box 8 arranged at the top of the professional fish transporting vehicle 7, wherein the fish transporting box 8 is connected with a sorting system consisting of a temporary rearing pond 10 and a fish chute 11 through a loading pipeline 9, and the interior of the fish transporting box 8 is divided into a plurality of areas through a barrier 20 for transporting different fishes. The lifting device is arranged as a tail water gate 12 above the fish collecting pond 2, and the tail water gate 12 can be connected with the fish collecting box 1 through a lifting lug 13 to lift the fish collecting box 1.

When the fish is collected, the tail water gate 12 is started to lift the fish collection box 1 down into the fish collection pond 2, and fish is collected and induced into the fish collection box 1 through the fish inlet 3 of the fish collection box 1 in a set continuous fish collection time. After fish collection is completed, the fish collection box 1 is lifted to the fish sliding groove 11 through the tail water gate 12, and a discharge channel of the fish collection box 1 is opened, so that fish enters the temporary rearing pond 10 through the fish sliding groove 11 for sorting. After sorting the fish, the fish is loaded by opening the valve 21 on the loading pipe 9 and making the fish enter the fish box 8 by the loading pipe 9. After loading, fish is transported by the fish transporting vehicle, and the power driving source of the fish transporting vehicle adopts an engine or a storage battery or a diesel engine.

In the embodiment, 2 fish collecting cages 14 are transversely arranged in the fish collecting box 1, rectangular anti-escape inlets 15 are formed in the fish collecting cages 14, and the inner bottom surface of the fish collecting box 1 is of an inclined structure, so that a water storage area 16 is formed at the inner bottom end of the fish collecting box 1, the height of the water storage area 16 is 0.2-0.3m, and the fish collecting and transporting system is convenient for keeping healthy and alive of fish in the lifting process. The close brush positioned on the side wall of the fish collecting box 1 is reserved between the side walls of the fish collecting box 1 and the fish collecting pond 2, and the gap is closed, so that fish can be prevented from escaping.

The fish collecting pond 2 is provided with a guide groove 17 from the fish inlet 3 to the inside of the fish collecting pond 2, and the cross section area of the guide groove 17 is gradually reduced from the fish inlet 3 to the inside of the fish collecting pond 2. The water flow and the fish are led in through the guide groove 17 of the fish inlet 3, and the cross section area of the guide groove 17 is gradually reduced from the fish inlet 3 to the inner side of the fish collecting pond 2, so that the flow speed of the water flow entering from the fish inlet 3 can be increased, and the fish migration can be facilitated.

The fish collecting station further comprises a first platform 18 and a second platform 19, the temporary rearing pond 10 and the fish chute 11 are positioned on the first platform 18, the initial position of the fish collecting box 1 is positioned on the first platform 18, the fish transporting vehicle is positioned on the second platform 19, and the fish collecting pond 2 is positioned below the edge of the second platform 19. The first platform 18 is higher than the second platform 19, so that the fish collected in the fish collecting box 1 can be conveniently subjected to sorting operation, and the sorted fish can be automatically loaded into the fish collecting box 1 under the action of gravity.

The fish transporting vehicle is provided with a discharge hose 22 and a vitamin device 23, and the fish transporting box 8 is provided with an interface 24 for connecting the vitamin device 23. By means of the discharge hose 22, it is possible to discharge fish. The healthy survival of the fish in the fish transporting box 8 can be maintained by the connection of the vitamin equipment 23 and the interface 24 on the fish transporting box 8.

The fish transporting vehicle is provided with a positioning and tracking system 25, and the positioning and tracking system 25 adopts a CPS positioning system or other positioning systems, so that the running track of the fish transporting vehicle can be tracked, recorded and monitored in real time.

As shown in fig. 3, the total dissolved gas saturation distribution is shown schematically, and the position selected by the fish collecting station is the position where the total dissolved gas saturation is lower, namely the position of the fish collecting pond 2 is the position where the total dissolved gas saturation of the tail water is lower; the fish luring effect is good by utilizing the water flow condition of the tail water, and the saturation of total dissolved gas in the tail water is low, so that the fish can be prevented from suffering from bubble disease, and the downstream fish can be effectively protected.

Fig. 4 is a simulation diagram of the location calculation of the fish-collecting point of the Wu Dongde hydropower station in this embodiment, and fig. 5 is a simulation diagram of the location calculation of the fish-collecting point of the hydropower station in the beach, in which the location of the fish-collecting system of the present invention is defined as a right bank tail water fish-collecting operation point and a left bank tail water fish-collecting operation point in fig. 4, and the location of the fish-collecting system of the present invention is defined as a tail water fish-collecting operation point in fig. 5, so that the fish-collecting system of the present invention can both take into account the flood discharging task and achieve a better fish-collecting effect during fish-collecting operation.

The working process comprises the following steps: the actual water depth and the actual flow rate are obtained through professional hydrologic measurement, the fish collecting box 1 is lifted by the tail water gate 12 and is put into the fish collecting pond 2, fish is collected and lured through the tail water flow, and after the fish passes through the fish inlet 3, the fish can be prevented from returning to the inlet by the arranged escape preventing cage 5; meanwhile, a fish blocking electric field 6 is started to prevent fish from entering the upstream through the tail water of power generation. Then, different fish collecting duration time can be set, after fish collecting is completed, the fish collecting box 1 is lifted to the fish sliding groove 11 by the tail water gate 12, a releasing channel is opened, fish can enter the temporary rearing pond 10 for sorting through the fish sliding groove 11, and the sorting time can be prolonged by the vitamin equipment 23 of the temporary rearing pond 10. After sorting, the valve 21 is opened, the sorted fish enters the fish transporting box 8 through the loading pipeline 9, the fish transporting vehicle can be started after loading is completed, and meanwhile, the fish vitamin equipment 23 in the vehicle is started to transport the fish.

In the embodiment of the invention, the fish collecting system and the fish collecting method can realize concentrated arrangement of fish collecting operation in tail water of the mountain gorge region, can give consideration to flood discharging tasks and can achieve better fish collecting effect; in addition, the fish attracting effect is good under the water flow condition at the tail water, the saturation of the total dissolved gas in the tail water is low, the fish can be prevented from suffering from bubble disease, and the downstream fish can be effectively protected.

The above specific embodiments are provided for illustrative purposes only and are not intended to limit the invention, and modifications, no inventive contribution, will be made to the embodiments by those skilled in the art after having read the present specification, as long as they are within the scope of the patent statutes.

Claims (10)

1. A fish gathering and transporting system for fixing tail water of hydropower stations in mountain gorge areas is characterized in that: the fish collecting station is arranged at the tail water of the hydropower station in the mountain gorge valley area and is provided with a fish collecting facility, and the fish collecting facility comprises a fish collecting box (1), a fish collecting pond (2), a lifting system and a loading facility;

the fish collecting pond (2) is provided with a plurality of fish inlets (3), guide piers (4) positioned among the fish inlets (3), fish blocking facilities and escape-preventing cages (5) positioned at the fish inlets (3), the fish blocking facilities are positioned at one side of the fish collecting pond (2) facing the power generation tail water, and the fish inlets (3) are arranged at the downstream side of the fish collecting pond (2);

the loading facility comprises a professional fish transporting vehicle (7) and a fish transporting box (8) arranged at the top of the professional fish transporting vehicle (7), the top of the fish transporting box (8) is connected with a temporary rearing pond (10) through a loading pipeline (9), and the inlet end of the temporary rearing pond (10) is connected with a fish chute (11);

the lifting facility is arranged above the fish collecting pond (2) and comprises a tail water gate machine (12), and a lifting lug (13) positioned right above the fish collecting box (1) is arranged at the bottom of the free end of the tail water gate machine (12); the tail water gate (12) is connected with the fish collecting box (1) through the lifting lug (13), and the fish collecting box (1) is lifted and lowered to the fish collecting pond (2) or lifted and lifted to the inlet end of the fish chute (11) far away from the temporary culture pond (10).

2. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: 2 fish collecting cages (14) are transversely arranged in the fish collecting box (1), rectangular anti-escape inlets (15) are formed in the fish collecting cages (14), the bottom surface inside the fish collecting box (1) is of an inclined structure, a water storage area (16) is formed in the bottom end inside the fish collecting box (1), and the height of the water storage area (16) is 0.2-0.3m.

3. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the fish collecting pond (2) is provided with a guide groove (17) from the fish inlet (3) to the inside of the fish collecting pond (2), and the cross section area of the guide groove (17) is gradually reduced from the fish inlet (3) to the inside of the fish collecting pond (2).

4. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the fish blocking facility is a fish blocking electric field (6).

5. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the fish transporting box (8) is internally provided with a barrier (20) for dividing the interior of the fish transporting box (8) into a plurality of areas.

6. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the loading pipeline (9) is provided with a valve (21).

7. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the fish collecting station further comprises a first platform (18) and a second platform (19), the first platform (18) is higher than the second platform (19), the temporary rearing pond (10) and the fish chute (11) are located on the first platform (18), the initial position of the fish collecting box (1) is located on the first platform (18), the fish transporting vehicle is located on the second platform (19), and the fish collecting pond (2) is located below the edge of the second platform (19).

8. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the fish transporting vehicle is provided with a release hose (22); the fish transporting vehicle is provided with a vitamin device (23), and the fish transporting box (8) is provided with an interface (24) for connecting the vitamin device (23).

9. A hydropower station tail water fixed fish gathering and transporting system in a high mountain gorge region as claimed in claim 1, wherein: the fish transporting vehicle is provided with a positioning and tracking system (25).

10. A fish gathering method for a fish gathering system for hydroelectric station tail water fixation in a high mountain gorge region as claimed in any one of claims 1 to 9, wherein: the method comprises the following steps:

s1, a fish collecting station is built in a hydropower station tail water fish intensive area in a mountain gorge region, and tail water fish collecting facilities are arranged in the fish collecting station, wherein the tail water fish collecting facilities comprise a fish collecting tank (1), a fish collecting pond (2), a lifting system and a loading facility, the lifting system is a tail water door machine (12) which is arranged above the fish collecting pond (2) and is used for lifting the fish collecting tank (1), the loading facility comprises a professional fish transporting vehicle (7) and a fish transporting tank (8) connected with the professional fish transporting vehicle (7), the fish transporting tank (8) is connected with a sorting system through a loading pipeline (9), and the sorting system consists of a temporary rearing pond (10) and a fish chute (11) connected with the temporary rearing pond (10);

s2, lifting the fish collecting box (1) by utilizing a tail water gate machine (12), lowering the fish collecting box into a fish collecting pond (2), introducing tail water with low total dissolved gas saturation at a fish collecting position to collect and lure fish, setting continuous fish collecting time, and collecting and lure fish into the fish collecting box (1) through a fish inlet (3) of the fish collecting box (1);

s3, after fish collection is completed, lifting the fish collection box (1) to a fish sliding groove (11) by utilizing a tail water gate machine (12), opening a discharge channel of the fish collection box (1), enabling fish to enter a temporary culture pond (10) for sorting through the fish sliding groove (11), and prolonging sorting time through a vitamin device (23) of the temporary culture pond (10);

s4, after sorting is completed, opening a valve (21) on the loading pipeline (9) to enable the sorted fish to enter the fish transporting box (8) through the loading pipeline (9) so as to realize fish loading; after loading, the fish transporting vehicle is started, and meanwhile, fish vitamin equipment (23) on the fish transporting vehicle is started to transport fish.

Images