Simulated ecological fish fry wild training fishway

Abstract

The utility model relates to the technical field of fish enhancement and release facilities, in particular to a simulated ecological fish fry wild training fishway which comprises a reservoir, a water supply part, a water return part, a fishway pond body and a water inlet fishway. The water supply part is used for supplying water of a water body to the reservoir; one end of the fishway pond body is communicated with the reservoir through a water discharge valve, and the other end of the fishway pond body is communicated with a water body through a water inlet fishway; a water retaining gate is arranged on the water entry fishway; a first rest pool, a second rest pool and a third rest pool are arranged in the fishway pool body; a plurality of barbaric stone ridges are arranged on the fishway pool body; and at least two water retaining ridges are further included. Aiming at the technical problem that the fish fries are low in releasing survival rate, the fishway pool is closer to the field habitat characteristics of released fishes, the capability of the fish fries to adapt to natural water bodies can be exercised by adjusting the flow and the flow speed in the fishway pool body, the requirement of fish wild training is met, and the requirement of partitioned culture in the fishway pool body can also be met at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of fish proliferation and release facilities, in particular to an ecologically simulated fish fry wilding training fishway. Background Art

[0002] At present, the fish fry artificially cultivated in the reproduction and release stations have sufficient bait and excellent conditions, but they are rarely exercised. The fish have poor physique and weak swimming ability, which makes them intolerant to handling. They are inevitably injured during the capture, transportation, temporary housing and counting before release, resulting in a low survival rate after release. After entering the natural habitat, the probability of becoming food for predators increases, and the probability of death is higher than that of wild individuals. Utility Model Content

[0003] In response to the technical problem of low survival rate of released fish fry, the utility model provides an ecological fishway for rewilding training of fish fry, which is closer to the wild habitat characteristics of released fish and can train the ability of fish fry to adapt to natural water bodies by adjusting the flow rate and flow rate in the fishway pond, thereby meeting the needs of rewilding training of fish and the needs of zoned breeding in the fishway pond.

[0004] The technical solution provided by the utility model is: an ecological fishway for wild fry training, comprising a water reservoir, a water supply part, a water return part, a fishway body, and an inlet fishway; the water reservoir is located at a high place, and the water supply part is used to supply water from the water body to the water reservoir; the fishway body extends from a high place to a low place, and slopes are arranged on both sides of the fishway body, one end of the fishway body is connected to the water reservoir through a drain valve, and the other end of the fishway body is connected to the water body through the inlet fishway; a drain pipe is arranged at one end of the fishway body close to the inlet fishway, the drain pipe is used to connect to the water body, and a drain valve is arranged on the drain pipe; a water retaining gate is arranged on the inlet fishway; the water return part comprises a circulating water pump and a recycled water pipe, the recycled water pipe is connected to the end of the fishway body and the water reservoir, and the circulating water pump is arranged A return water control valve is arranged on the end of the fishway pool body, the return water pipe and the connecting path of the water storage tank; a first resting pool is arranged on the end of the fishway pool body close to the water storage tank, a second resting pool is arranged on the end of the fishway pool body close to the water fishway, and at least a third resting pool is arranged in the middle of the fishway pool body, and the third resting pool is located between the first resting pool and the second resting pool; a plurality of stone sills are arranged on the fishway pool body, and the stone sills include a plurality of stones arranged at intervals along a direction perpendicular to the extension direction of the fishway pool body; and at least two water retaining sills are also provided, at least one water retaining sill is located between the first resting pool and at least one third resting pool, and at least one water retaining sill is located between the second resting pool and at least one third resting pool, and the water retaining sill is a stone sill filled with sandbags at the vertical seams.

[0005] Optionally, the water supply unit includes a pump station and a pipeline. The pump station includes a plurality of submersible pumps. The submersible pumps are located one meter below the dead water level of the water body. The pump station is connected to the water reservoir through a pipeline.

[0006] Optionally, when there are more than two third rest pools, at least one water retaining ridge is located between different third rest pools.

[0007] Optionally, the distance between adjacent stone ridges is 3 m, the distance between stones in each row of the stone ridges is 0.2-0.4 m, and the diameter of the stones is 0.7 m-1.0 m.

[0008] Optionally, the height of the water retaining sill is 0.4 m.

[0009] Optionally, the slope ratio of the fishway pool body is 0.5%, and the bottom slopes of the first rest pool, the second rest pool and the third rest pool are 0.

[0010] Optionally, the water depth in the fishway pool is 0.5-0.8m.

[0011] Optionally, a fry escape prevention device is provided at the pipe mouth of the water discharge pipe.

[0012] Optionally, a fish blocking net is provided on the top of the sluice gate.

[0013] Optionally, water treatment facilities are provided in the water reservoir.

[0014] Beneficial Effects

[0015] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects: in response to the technical problem of low survival rate of released fish fry, the utility model provides an ecological fishway for wild fry training, which is closer to the characteristics of the wild habitat of released fish. By adjusting the flow rate and flow rate in the fishway pond, the ability of fish fry to adapt to natural water bodies can be trained, thereby meeting the needs of fish wild training and the needs of zoned breeding in the fishway pond. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of the ecologically simulated fish fry wilding training fishway proposed in an embodiment of the utility model.

[0017] Figure 2 This is a schematic diagram of the partial structure of the ecologically simulated fish fry wilding training fishway proposed in an embodiment of the utility model.

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure in the AA direction. DETAILED DESCRIPTION

[0019] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings and embodiments.

[0020] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the relevant utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings. The words "first", "second", etc. described in the present utility model are set for the convenience of describing the technical solution of the present utility model, and have no specific limiting effect. They are all general references and do not constitute a limiting effect on the technical solution of the present utility model. It should be noted that, in the absence of conflict, the embodiments and features in the embodiments in the present application can be combined with each other. In the description of the present utility model, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be a connection between the insides of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Multiple technical solutions in the same embodiment, and multiple technical solutions in different embodiments, can be arranged and combined to form new technical solutions that do not have contradictions or conflicts, all of which are within the scope of protection required by the present utility model.

[0021] Example 1

[0022] Combined with Figure 1-3The present embodiment proposes an ecological fry wild training fishway, comprising a reservoir 100, a water supply unit, a water return unit, a fishway body 101, and an inlet fishway 102; the reservoir 100 is located at a high place, and the water supply unit is used to supply water from the water body to the reservoir 100; the fishway body 101 extends from a high place to a low place, and slopes are arranged on both sides of the fishway body 101. One end of the fishway body 101 is connected to the reservoir 100 through a drain valve, and the other end of the fishway body 101 is connected to the drain valve. The fishway 102 is connected to the water body; a discharge pipe 103 is provided at one end of the fishway body 101 near the fishway 102, and the discharge pipe 103 is used to connect to the water body, and a discharge valve is provided on the discharge pipe 103; a water retaining gate 104 is provided on the fishway 102; the return water part includes a circulating water pump and a recycling water pipe 105, and the recycling water pipe 105 connects the end of the fishway body 101 and the reservoir 100, and the circulating water pump is provided at the end of the fishway body 101 and the recycling water pipe 105 is provided at the end of the fishway body 101. On the communication path between the pipe 105 and the water reservoir 100, a return water control valve is arranged on the return water pipe 105; a first resting pool 111 is arranged at one end of the fishway pool body 101 close to the water reservoir 100, a second resting pool 112 is arranged at one end of the fishway pool body 101 close to the water fishway 102, and at least a third resting pool 113 is arranged in the middle of the fishway pool body 101, and the third resting pool 113 is located between the first resting pool 111 and the second resting pool 112; the fishway pool body 101 01 is provided with a plurality of stone sills 12, the stone sills 12 include a plurality of stones 121 arranged at intervals along a direction perpendicular to the extension direction of the fishway pool body 101; it also includes at least two water retaining sills 13, at least one water retaining sill 13 is located between the first rest pool 111 and at least one third rest pool 113, at least one water retaining sill 13 is located between the second rest pool 112 and at least one third rest pool 113, and the water retaining sill 13 is a stone sill 12 with sandbags 131 filled in the vertical seams.

[0023] The eco-friendly fishway for fry wilding training of the present embodiment is closer to the characteristics of the wild habitat of released fish. By adjusting the flow rate and flow velocity in the fishway pond 101, the ability of fry to adapt to natural water bodies can be trained to meet the needs of fish wilding training, such as the needs of upstream domestication of migratory fish, wilding training of fry habitats and wilding training of feeding-anti-predation ability, etc. It can also meet the needs of zoned breeding in the fishway pond 101.

[0024] The ecological fry wild training fishway of this embodiment can be set near a water body such as a river, a stream or a reservoir. When implemented, the terrain of the water body can be flexibly used to ensure that the fishway pool body 101 extends from a high place to a low place. The slope ratio of the fishway pool body 101 can be 0.5%. Among them, the reservoir 100 is located at a high place, which is the highest place of the ecological fry wild training fishway. In one embodiment, the effective volume of the reservoir 100 is not less than 1000m3.

[0025] The water in the reservoir 100 comes from the adjacent water body. The water supply unit transports the water from the adjacent water body to the reservoir 100 to be used as water for the ecological fry wild training fishway. The advantage of using the water from the adjacent water body is that the fish will eventually be exiled to the adjacent water body. Therefore, the water for the ecological fry wild training fishway uses the adjacent water body as the water source, which can improve the adaptability of the fish and is more environmentally friendly. The water in the reservoir 100 is put into the fishway pool 101 through the drain valve, and the drain valve can be controlled by electric or manual methods.

[0026] In a preferred embodiment, water treatment facilities are also provided in the water reservoir 100, for example, water treatment facilities such as filters and ultraviolet disinfection devices are provided at the bottom of the water reservoir 100 for filtering and purifying water quality, so that the water from the water body accumulated in the water reservoir 100 is gravity-flowed into the fishway tank body 101 after sedimentation and filtration, thereby reducing pollution to the ecological fry wild training fishway, which can reduce maintenance costs to a certain extent, and can also ensure the survival rate of fish.

[0027] In one embodiment, the water supply unit includes a pump station 141 and a pipeline 142. The pump station 141 is connected to the water reservoir 100 through the pipeline 142. The pump station 141 includes a plurality of submersible pumps, and the submersible pumps are located one meter below the dead water level of the water body. There are at least three submersible pumps, which form a three-in-one standby form to ensure water supply to the water reservoir 100.

[0028] In one embodiment, the bottom width of the fishway pond 101 is 5m, the maximum depth is about 1.5m, the top width is 8m, and the water depth for fry breeding is generally 0.5-0.8m. Therefore, the water depth in the fishway pond 101 can be 0.5-0.8m. Under this embodiment, the maximum water flow rate of the ecological fry wild training fishway during operation is about 0.59m3 / s.

[0029] The fishway pond body 101 and the slope are compacted with original soil, interspersed with pebbles and stones, and covered with 600g / m2 geotextile, 1.5mmHDPE single rough geomembrane and 600g / m2 geotextile for anti-seepage. The bottom of the fishway pond body 101 can also be covered with fine sand, pebbles, etc. according to the habitat needs of fish.

[0030] The present embodiment is also provided with a first resting pool 111, a second resting pool 112 and at least one third resting pool 113 for fish to rest and improve the survival rate of fish. The water flow in the first resting pool 111, the second resting pool 112 and the third resting pool 113 is relatively slow and the terrain is relatively flat. The first resting pool 111 and the second resting pool 112 are preferably distributed at the head and tail of the fishway pool body 101, and at least one third resting pool 113 is located in the middle of the fishway pool body 101. In a preferred embodiment, the total area of ​​the first resting pool 111, the second resting pool 112 and the at least one third resting pool 113 is at least 1000m2, and the bottom slope of the first resting pool 111, the second resting pool 112 and the third resting pool 113 is 0.

[0031] In this embodiment, a barbarian stone 12 is also arranged, and multiple groups of barbarian stone 12 are arranged along the extension direction of the fishway pool 101. The layout of the barbarian stone 12 is to dissipate energy and reduce the flow in the fishway pool 101. At the same time, it can also simulate the situation of natural water bodies to a certain extent, which is closer to the wild habitat characteristics of released fish. The diameter and spacing of the barbarian stone 121 are determined based on the empirical value and the flow rate required for training fry. The water depth for fry breeding is generally 0.5 to 0.8m, so the water depth in the fishway pool 101 can be 0.5 to 0.8m. Combined with the above-mentioned implementation method, the maximum water flow rate of the ecological fry wild training fishway during operation is about 0.59m3 / s, and the spacing of the barbarian stone 121 can generally be selected to be 0.2 to 0.4m. The flow area of ​​the section where the stone step 12 is located generally accounts for 20% to 30%. In one embodiment, a group of stone steps 12 can be set every 3 meters in the fishway pool body 101. A group of stone steps 12 is composed of one or several rows of stones 121. Each row of stones 121 can be 6, with a spacing of 0.3m, and the diameter of the stone 121 is 0.7m to 1.0m.

[0032] On the basis of the barren stone sill 12, the eco-friendly fish fry wild training fishway of this embodiment is further provided with a water retaining sill 13, which is a barren stone sill 12 with sandbags 131 filled in the vertical seams. When the gap vertical seams of the barren stone sill 12 are filled with sandbags 131, a water retaining effect will be achieved, thereby forming the water retaining sill 13. The laying height of the sandbags 131 also determines the water retaining height. In one embodiment, the laying height of the sandbags 131 is 0.4m, thereby making the height of the water retaining sill 13 0.4m. The height of the water retaining sill 13 is 0.4m, which is slightly lower than the minimum aquaculture water depth of 0.5m, which can ensure that there is a minimum aquaculture water depth condition in the fishway pond body 101 and control the flow rate in the fishway pond body 101.

[0033] Since the fishway for ecological fry wild training is long and has a certain flow rate, there may be an uneven distribution problem during fry breeding. Therefore, it is considered to set a plurality of water retaining ridges 13 in the fishway pond 101 to divide the fishway pond 101 into at least three areas for fry breeding and domestication.

[0034] A water retaining sill 13 is provided, and the flow velocity at the top of the water retaining sill 13 will be relatively large, thereby exceeding the speed of the fry's sudden swimming. The fry on the downstream side cannot pass through the water retaining sill 13, and the fry on the upstream side will seek a slow-flowing area to survive, away from the water retaining sill 13. Therefore, the provision of the water retaining sill 13 can form the conditions for upstream and downstream zoning breeding, and avoid all the fry being concentrated together, resulting in an excessive breeding density. In one embodiment, when one third rest pool 113 is provided, two water retaining sills 13 with a height of 0.4 m are provided in the fishway pool body 101, and the fishway is divided into three areas for fry breeding and domestication, which are respectively located between the first rest pool 111 and the third rest pool 113, and between the second rest pool 112 and the third rest pool 113.

[0035] In this embodiment, using sandbags 131 as water retaining ridges 13 is more flexible and convenient, and it is easier to adjust the number, position and height of water retaining ridges 13 according to the preferred flow rate of the fry and the wild training situation. For example, when the fry have weak swimming ability, it is necessary to set 4 or more water retaining ridges 13, or to raise the water retaining ridges 13, so as to reduce the flow rate in the fishway pool 101. For example, when there are more than two third rest pools 113, at least one water retaining ridge 13 can be located between different third rest pools 113.

[0036] In this embodiment, the fishway pool body 101 is connected to the water body through the water inlet fishway 102, and the fish in the fishway pool body 101 eventually enter the adjacent water body through the water inlet fishway 102. A water retaining gate 104 is provided on the water inlet fishway 102. In one embodiment, the water retaining head is designed to be 0.8m, and the elevation of the bottom sill of the gate is 3252.78m. Further, a fish blocking net can be provided on the top of the water retaining gate 104 to prevent fish from passing through the top of the gate. In one embodiment, the fish blocking net is 0.4m high and the network pores are about 1cm×1cm. The water retaining gate 104 and the fish blocking net can be a detachable combined structure, for example, the fish blocking net and the gate are connected with bolts to form a whole, which can be easily disassembled for maintenance and replacement.

[0037] In this embodiment, a drain pipe 103 and a drain valve are also provided at the end of the fishway pool 101 to drain water into the water body, thereby further controlling the water level in the fishway pool 101. Furthermore, a fry escape prevention device may be provided at the outlet of the drain pipe 103 to prevent the fry from escaping.

[0038] The ecological fry wild training fishway of this embodiment adopts partial circulation breeding and realizes the recycling of water by providing a return water part, which plays the role of saving water resources, regulating the water volume of the fishway, and saving the use and consumption of the water supply part.

[0039] The water return section includes a circulating water pump and a recycling water pipe 105. The recycling water pipe 105 connects the end of the fishway pool 101 and the water reservoir 100. The circulating water pump is arranged at the end of the fishway pool 101, the connecting path between the recycling water pipe 105 and the water reservoir 100, and a recycling water control valve is arranged on the recycling water pipe 105. The circulating water flows back to the water reservoir 100 or the fishway pool 101 through the water return section. By adjusting the power or number of the circulating water pump, the opening of the recycling water control valve, etc., the circulating water return situation can be regulated. In a preferred embodiment, the water return section can be controlled to replenish about 20% of the water volume every day.

[0040] Part of the working method of the ecological fish fry wild training fishway in this embodiment is as follows: when the ecological fish fry wild training fishway is activated, the number and position of the water retaining ridges 13 are determined, sandbags 131 are laid on the corresponding stone ridges 12 to form the water retaining ridges 13, the water retaining gate 104 at the end of the fishway is closed, the water supply part and the return water part are started, the waterproof valve of the water reservoir 100 is opened, and the return water control valve is opened, so that the water depth of 0.5m and the micro-flow state are maintained in the fishway pool body 101.

[0041] When the flow rate and water depth of the fishway for ecological fry wild training are adjusted, the amount of water in the fishway pool 101 can be supplemented by increasing the amount of recycled water from the circulating pump, thereby increasing the flow rate, water depth and other domestication conditions of the fishway; and the flow rate, water depth and other domestication conditions of the fishway can be reduced by draining water through the drain pipe 103 and reducing the amount of recycled water from the circulating pump.

[0042] When the ecological fry wild training fishway is stopped, the sandbags 131 in the fishway pool 101 are removed as needed, the water release valve is opened, and the circulating water pump is turned off, and the fishway can be stopped. The above operations can also control the water depth of the fishway as needed.

[0043] When releasing fry in the ecological fry wild training fishway, the sandbags 131 in the fishway are removed, the water release valve is opened, the circulating water pump is turned off, and the water retaining gate 104 is lifted at the same time, and all the water release valves of the reservoir 100 are opened to release all water into the fishway pool 101. The fry can then directly enter the adjacent water body through the water inlet fishway 102 along with the water body.

[0044] The above schematically describes the present invention and its implementation methods, which are not restrictive. The drawings show only one implementation method of the present invention, and the actual structure is not limited thereto. Therefore, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creative design without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. An ecological fishway for fry wilding training, characterized in that: It includes water storage tank, water supply part, water return part, fishway tank body and inlet fishway; The water reservoir is located at a high place, and the water supply part is used to supply water from the water body to the water reservoir; the fishway pool body extends from a high place to a low place, and slopes are arranged on both sides of the fishway pool body; one end of the fishway pool body is connected to the water reservoir through a water discharge valve, and the other end of the fishway pool body is connected to the water body through the inlet fishway; a water discharge pipe is arranged at one end of the fishway pool body close to the inlet fishway, and the water discharge pipe is used to connect to the water body, and a water discharge gate valve is arranged on the water discharge pipe; a water retaining gate is arranged on the inlet fishway; The water return part includes a circulating water pump and a recycling water pipe, the recycling water pipe connects the end of the fishway pool body and the water reservoir, the circulating water pump is arranged on the communication path between the end of the fishway pool body, the recycling water pipe and the water reservoir, and the recycling water pipe is provided with a water return control valve; The fishway pool body is provided with a first resting pool at one end close to the water reservoir, the fishway pool body is provided with a second resting pool at one end close to the water fishway, and at least a third resting pool is provided in the middle of the fishway pool body, and the third resting pool is located between the first resting pool and the second resting pool; The fishway body is provided with a plurality of stone steps, wherein the stone steps include a plurality of stones arranged at intervals along a direction perpendicular to the extension direction of the fishway body; It also includes at least two water retaining ridges, at least one water retaining ridge is located between the first rest pool and at least one third rest pool, and at least one water retaining ridge is located between the second rest pool and at least one third rest pool, and the water retaining ridges are stone ridges with sandbags filled in the vertical seams.

2. The ecologically simulated fish fry wild training fishway according to claim 1 is characterized in that: The water supply unit includes a pump station and a pipeline. The pump station includes a plurality of submersible pumps. The submersible pumps are located one meter below the dead water level of the water body. The pump station is connected to the water reservoir through a pipeline.

3. The ecological fishway for fry wilding training according to claim 2 is characterized in that: When there are more than two third rest pools, at least one water retaining ridge is located between different third rest pools.

4. The ecological fishway for fry wilding training according to claim 1 is characterized in that: The distance between adjacent stone steps is 3m, the distance between stones in each row of the stone steps is 0.2-0.4m, and the diameter of the stones is 0.7m-1.0m.

5. The ecological fishway for fry wilding training according to claim 1 is characterized in that: The height of the water retaining sill is 0.4m.

6. The ecological fishway for fry wilding training according to claim 1 is characterized in that: The slope ratio of the fishway pool body is 0.5%, and the bottom slopes of the first rest pool, the second rest pool and the third rest pool are 0.

7. The ecological fishway for fry wilding training according to claim 1 is characterized in that: The water depth in the fishway pool is 0.5-0.8m.

8. The ecological fishway for fry wilding training according to claim 1 is characterized in that: A fry escape prevention device is arranged at the pipe mouth of the water discharge pipe.

9. The ecological fishway for fry wilding training according to claim 1 is characterized in that: A fish blocking net is arranged on the top of the water retaining gate.

10. The ecological fishway for fry wilding training according to claim 1 is characterized in that: Water treatment facilities are arranged in the water reservoir.

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