Self-adaptive dynamic water level adjustable fish passing channel

Abstract

The invention belongs to the technical field of fish passing facility construction, and discloses a self-adaptive dynamic water level adjustable fish passing channel which comprises a first fish passing channel arranged at the downstream of a dam and an adjustable fish passing channel arranged at the upstream of the dam and communicated with the dam. The adjustable fish passing channel comprises a plurality of buttresses and a fish pipe; the buttresses are vertically arranged on the upstream of the dam at preset intervals and used for supporting the fish pipe. One end of the fish pipe communicates with the first fish passing channel, and the other end is located at the upstream of the dam as a fish outlet; the fish pipe is transversely connected to the buttresses and can slide in the elevation direction of the buttresses so that the position elevation of the fish outlet can be adjusted according to the dynamic water level. Through height adjustment and buttress design, the elevation of the fish pipe is flexibly adjusted in real time to adapt to the water level with variable amplitude. By means of the design, the manufacturing cost is reduced, operation is simplified, the reservoir area space is saved, sustainable development of water conservancy and hydropower engineering is promoted, solid support is provided for ecological protection, and the dual value of engineering efficiency and environmental protection is embodied.

Description

Technical Field

[0001] The invention discloses a self-adaptive dynamic water level adjustable fish passage, belonging to the technical field of fish passage facility construction. Background Art

[0002] As a channel for fish migration, fishways play a vital role in maintaining the balance of aquatic ecosystems. However, with the continuous expansion of human activities, many fish migration channels have been destroyed, forcing people to take measures to protect this natural habit of fish. In water conservancy projects, in order to fill this ecological gap, remedial measures such as artificial water tanks are often built on sluices or dams to provide alternative channels for fish migration.

[0003] In view of the large changes in water levels in the upstream reservoir, the traditional fixed fishway can no longer meet the needs of fish under different water level conditions. Therefore, new types of fishways such as floating adjustable fishways and gate-type fishways have emerged. These fishways can adapt to changes in water levels by adjusting the overall or segmented rise and fall to ensure that fish can migrate smoothly.

[0004] However, in practical applications, there are some urgent problems to be solved in the floating adjustable fishway. Due to the effect of the existing floating device, the slope ratio of a certain section of the fishway may not meet the fish passing requirements during the lifting process, which will cause difficulties for fish to pass through. At the same time, the flow rate in the fishway may also be uneven, further affecting the migration effect of fish.

[0005] In addition, floating or hydraulic devices are usually set at the bottom of the water body. These devices operate for a long time in a humid or underwater environment, facing many challenges in deployment, maintenance and overhaul management. Due to the particularity of the environment, the performance of these devices may be affected, resulting in reduced stability and reliability of the fishway.

[0006] In addition, the length of the fishway is also greatly affected by the slope ratio and water level fluctuation. Under the condition of a certain slope ratio, the greater the water level fluctuation, the longer the required fishway length. This not only increases the difficulty and cost of the project, but may also have a certain impact on the overall layout and ecological environment of the reservoir area.

[0007] Therefore, how to design a fishway that can adapt to large changes in water levels, meet the needs of fish migration, and is easy to deploy and maintain is a technical problem that needs to be urgently solved in the current field of water conservancy engineering. Summary of the invention

[0008] The purpose of the present application is to provide an adaptive dynamic water level adjustable fish passage to solve the technical problems in the prior art that the traditional fixed fish passage is difficult to adapt to the upstream water level changes caused by dam construction, and the traditional floating fish passage is difficult to maintain the slope ratio and straightness of the fish passage, which in turn affects the fish passing efficiency. To achieve the above purpose, the present invention proposes an adaptive dynamic water level adjustable fish passage, including a first fish passage arranged downstream of the dam and an adjustable fish passage arranged upstream of the dam and connected thereto;

[0009] The adjustable fish passage comprises a plurality of buttresses and a fish tube;

[0010] The plurality of buttresses are vertically arranged at preset intervals upstream of the dam to provide support for the fish tubes;

[0011] One end of the fish tube is connected to the first fish passage, and the other end is located upstream of the dam as a fish outlet;

[0012] The fish tube is laterally connected to the plurality of piers, and the fish tube can slide along the elevation direction of the piers to adjust the position elevation of the fish outlet according to the dynamic water level.

[0013] Preferably, it also includes a plurality of height adjustment devices;

[0014] The multiple height adjustment devices are respectively arranged on the multiple piers, and are used to drive the fish tubes on the piers according to the dynamic water level, so that the fish tubes slide to a preset elevation.

[0015] Preferably, each of the height adjustment devices comprises a driving mechanism and a transmission mechanism;

[0016] The driving mechanism is arranged on the top of the buttress and connected to the transmission mechanism;

[0017] The transmission mechanism is connected with the fish tube.

[0018] Preferably, it also includes a supporting mechanism;

[0019] The supporting mechanism is connected to the transmission mechanism and carries the fish tube, and is used to drive the fish tube to slide along the elevation direction of the buttress.

[0020] Preferably, the support mechanism specifically comprises a support rod and two sets of pulleys;

[0021] Each pier includes an opposing set of slide rails;

[0022] The fish tube is arranged on the support rod;

[0023] The two groups of pulleys are respectively arranged at two ends of the support rod and slide in the slide rail.

[0024] Preferably, it also includes a sensing device;

[0025] The sensor device is arranged on a pier close to the fish outlet, and is used for collecting real-time water level information of an upstream reservoir, and transmitting the real-time water level information to the driving mechanism.

[0026] Preferably, the fish outlet of the fish tube is provided with a trash rack.

[0027] Preferably, the length of the fish tube is determined according to the submerged elevation of the fish outlet and the water level fluctuation upstream of the dam.

[0028] Preferably, it also includes a partition guide plate;

[0029] The partition guide plate is arranged in the fish tube along the extension direction of the fish tube, and is used for optimizing water flow turbulence.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: the adaptive dynamic water level adjustable fish passage of the present invention significantly improves the flexibility and real-time performance of the fish tube elevation adjustment through the height adjustment device and the pier design. The fish passage of the present invention is not only suitable for reservoirs with large water level fluctuations, but also for reservoirs with small water level fluctuations. More importantly, the design greatly reduces the overall cost of the fish passage project, simplifies the operation process, and effectively saves precious space resources in the reservoir area. This series of advantages not only promotes the sustainable development of water conservancy and hydropower projects, but also demonstrates its value in improving project efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an axonometric diagram of an adjustable fish passage in an embodiment of the present invention;

[0032] Figure 2 This is a schematic cross-sectional view of an adjustable fish passage in an embodiment of the present invention;

[0033] Figure 3 Schematic diagram of the connection between the fish tube and the buttress in an embodiment of the present invention.

[0034] In the figure: 1. Dam; 2. Pier; 3. Fish pipe; 31. Fish outlet; 4. Sensor device; 5. Opening and closing machine room; 6. Driving mechanism; 7. Fulcrum; 71. Support rod; 8. Steel cable; 9. Pulley; 10. Partition guide plate; 11. Steel ring. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] In the current existing technology, multiple distributed fish outlets are usually set up to adjust the operation order of the fish outlets in real time according to the changes in the reservoir water level. However, the operation is complicated and the cost is high. The existing floating adjustable fishway has defects such as the slope ratio does not meet the requirements and the flow rate is uneven; in addition, the existing gate-type adjustable fishway has problems such as the mechanical and electrical lifting device is sensitive to water, the horizontal length requirement is too high, and the adjustment parameters are inaccurate.

[0037] Based on the above problems, the present invention provides an adaptive dynamic water level adjustable fish passage, which can accurately adjust the posture of the fish passage according to the water level changes in the reservoir area, ensure that the fish passage is in an oblique or horizontal straight state, so that the flow rate in the fish passage is balanced and not chaotic, and the fish passing efficiency is improved. The fish passage is located at the edge of the slope, which is convenient for inspection and maintenance. The multi-point structure allows the fish passage to be infinitely extended in the horizontal direction to the end of the reservoir area, and can also adapt to large amplitude water level changes. The specific implementation methods of the present invention will be described in detail below.

[0038] See also Figure 1 As shown, the present invention provides an adaptive dynamic water level adjustable fish passage, including a first fish passage arranged downstream of the dam 1 and an adjustable fish passage arranged upstream of the dam 1 and connected thereto; wherein the first fish passage is arranged downstream of the dam 1, and it still adopts a traditional fish passage or other fish passing facilities, and the present invention is not limited here. The core of the present invention lies in the adjustable fish passage located upstream of the dam 1 and connected to the first fish passage. The adjustable fish passage includes a plurality of piers 2 and a fish tube 3; the plurality of piers 2 are vertically arranged upstream of the dam 1 at preset intervals to provide support for the fish tube 3; one end of the fish tube 3 is connected to the first fish passage, and the other end is located upstream of the dam 1 as a fish outlet 31; the fish tube 3 is laterally connected to the plurality of piers 2, and the fish tube 3 can slide along the elevation direction of the piers 2 to adjust the position elevation of the fish outlet 31 according to the dynamic water level.

[0039] Specifically, the adjustable fish passage includes a plurality of piers 2 and a fish tube 3. The piers 2 are vertically arranged at preset intervals on a stable foundation upstream of the dam 1 and close to the edge of the bank slope. The main function of the piers 2 is to support the fish tube 3 to ensure that the fish tube 3 can remain stable under the impact of the water flow. In this embodiment, the connection between the fish tube 3 and each pier 2 is recorded as a fulcrum 7. One end of the fish tube 3 is closely connected to the first fish passage, ensuring that fish can swim in smoothly from the downstream; and the other end serves as a fish outlet 31, located at a certain position upstream of the dam 1, to facilitate the fish to swim out.

[0040] In a specific embodiment, Figure 2 As shown in FIG. 1 , the distance between the first buttress 2 close to the dam 1 and the dam 1 and the distance between each adjacent buttress 2 are set to h 1 Meters, such a layout design is intended to ensure the stability of the structure and the smooth sliding of the fish tube 3. The total number of piers 2 is m, and this number is determined according to the specific terrain and engineering requirements upstream of the dam 1. The fish outlet 31 of the fish tube 3 is set at a height of 1.5 meters from the current water level, that is, the submerged elevation of the fish outlet 31 is 1.5 meters. This setting is intended to ensure that the water flow can flow down smoothly, while keeping the inside of the fish tube 3 full, and then effectively utilize the power of the water flow to promote fish to pass through the fish passage more smoothly. It should be understood that the submerged elevation of the fish outlet 31 is set by technicians in this field based on empirical values, and can be specifically set according to factors such as the habits of fish, the speed of the water flow, and the amplitude of water level fluctuations. This is common knowledge among technicians in this field and will not be repeated here.

[0041] Furthermore, it also includes multiple height adjustment devices; the multiple height adjustment devices are respectively arranged on multiple piers 2, and are used to drive the fish tubes 3 on the piers 2 according to the dynamic water level, so that the fish tubes 3 slide to a preset elevation.

[0042] In this embodiment, a plurality of height adjustment devices are introduced. These devices are respectively arranged on a plurality of piers 2 and are located in the opening and closing machine room 5 on the top of the pier 2. The core function of these devices is to accurately drive the fish tubes 3 on the respective piers 2 according to the change of the dynamic water level, so that the fish tubes 3 can slide to the preset elevation position to ensure the smooth and efficient passage of fish. A plurality of piers 2 are provided with height adjustment devices, which can realize the synchronous adjustment of the fish tubes 3. When the water level changes, the multiple supporting points 7 connecting the fish tubes 3 and the plurality of piers 2 will be adjusted at the same time and in a coordinated manner to ensure that the entire fish tube 3 always maintains a straight state. This straight state is crucial to maintaining the stability of the flow state in the fish tube 3. It can reduce the water flow resistance and increase the passing rate of fish, thereby further improving the efficiency of fish passage.

[0043] Furthermore, each height adjustment device includes a driving mechanism 6 and a transmission mechanism; the driving mechanism 6 is arranged on the top of the pier 2 and connected to the transmission mechanism; the transmission mechanism is connected to the fish tube 3.

[0044] Specifically, each height adjustment device is composed of two major parts: a driving mechanism 6 and a transmission mechanism. The driving mechanism 6 is arranged on the top of the pier 2, specifically in the hoisting and closing machine room 5, and is closely connected with the transmission mechanism to form a compact and efficient working unit. The transmission mechanism is further connected to the fish tube 3, and through its precise transmission action, the power of the driving mechanism 6 is directly transmitted to the fish tube 3, driving the fish tube 3 to slide along the elevation direction of the pier 2.

[0045] Furthermore, it also includes a supporting mechanism; the supporting mechanism is connected to the transmission mechanism and carries the fish tube 3, and is used to drive the fish tube 3 to slide along the elevation direction of the pier 2.

[0046] In order to further enhance the sliding stability and reliability of the fish tube 3, a support mechanism is designed. The support mechanism is closely connected with the transmission mechanism, used to bear the weight of the fish tube 3, and driven by the transmission mechanism, drives the fish tube 3 to slide smoothly and accurately along the elevation direction of the pier 2.

[0047] Furthermore, the supporting mechanism specifically includes a supporting rod 71 and two sets of pulleys 9; each pier 2 includes a set of relative slide rails; the fish tube 3 is arranged on the supporting rod 71; the two sets of pulleys 9 are respectively arranged at both ends of the supporting rod 71 and slide in the slide rails.

[0048] Specifically, Figure 3 As shown, the support mechanism is composed of a support rod 71 and two groups of pulleys 9 to form a stable support system. The support rod 71 serves as a carrier of the fish tube 3 and is used to bear the weight of the fish tube 3 and the water flow inside it. At the same time, each pier 2 is designed to include a vertical groove inside, and a group of oppositely arranged slide rails are embedded in the vertical groove. The slide rail provides a precise sliding path for the pulley 9. The pulley 9 is respectively arranged at both ends of the support rod 71, embedded in the slide rail when in use, and can slide smoothly along the slide rail. This design not only ensures the stability and accuracy of the fish tube 3 during the sliding process, but also greatly reduces the friction resistance during the sliding process, so that the fish tube 3 can respond to the change of water level more smoothly. In the process of adjusting the fish outlet of the fish tube 3, since the fulcrum position will generate rotation or lateral force, in order to adapt to this dynamic change, the present embodiment specially selects a cylindrical support rod 71 to facilitate the fish tube 3 to move forward and backward during adjustment. In addition, in a further embodiment, a steel ring 11 is added to the periphery of the fish tube 3. The steel ring 11 is fixed on the support rod 71 with a certain preset gap between it and the fish tube 3. This design aims to provide necessary movement space for the fish tube 3 during dynamic changes, while effectively preventing the movement risk caused by drastic changes of the fish tube 3.

[0049] In this embodiment, a winch or other equipment is used as the driving mechanism 6, and a steel cable 8 is used as the transmission mechanism. When the position of the fish tube 3 needs to be adjusted, the winch is started and the steel cable 8 is pulled, thereby driving the support rod 71 to move along the slide rail. During this process, the pulley 9 rolls in the slide rail, further reducing the friction resistance, so that the fish tube 3 can reach the preset elevation position more easily.

[0050] Furthermore, it also includes a sensor device 4; the sensor device 4 is arranged on the pier 2 close to the fish outlet 31, and is used to collect real-time water level information of the upstream reservoir and transmit the real-time water level information to the driving mechanism 6.

[0051] Specifically, in order to achieve real-time monitoring and accurate response to changes in the water level of the reservoir, a sensor device 4 is introduced. This device is set on the pier 2 near the fish outlet 31, and its location is selected to ensure that the real-time water level information of the upstream reservoir can be accurately captured. The sensor device 4 can collect the water level data of the reservoir in real time and convert it into an electrical signal for transmission. These real-time water level information are then transmitted to the drive mechanism 6 as an important basis for adjusting the position of the fish tube 3. After receiving this information, the drive mechanism 6 will quickly calculate and analyze, and adjust the elevation position of the fish tube 3 as needed to ensure that the fish outlet 31 is always maintained at a suitable water level. It is worth noting that the sensor device 4 is vertically arranged in the elevation direction of the pier 2. This design enables it to capture subtle differences in water level changes more accurately. The sensor device 4 can select a capacitive water level sensor, an ultrasonic water level sensor, or an optical water level sensor. This embodiment selects a capacitive water level sensor.

[0052] Furthermore, the fish outlet 31 of the fish tube 3 is provided with a trash rack.

[0053] Specifically, the main function of the trash rack is to block and intercept various pollutants floating down from the upstream, such as branches, plastic bags, water plants, etc., to prevent them from entering the fish tube 3, causing unnecessary harm to the fish or hindering their passage. This design not only helps to keep the inside of the fish tube 3 clean and unobstructed, but also can improve the passing rate of fish and ensure the efficient operation of the fish passage.

[0054] Furthermore, the length of the fish tube 3 is determined according to the submerged elevation of the fish outlet 31 and the water level fluctuation upstream of the dam 1 .

[0055] Specifically, during the construction of water conservancy and hydropower projects, in order to ensure the smooth migration of fish, the upstream end elevation of the first fish passage (traditional fishway) in the downstream area of ​​dam 1, the elevation of the adjustable fish passage upstream of dam 1 in a horizontal state, and the difference between the dead water level elevation of the reservoir and the submerged elevation of the fish pipe 3 in the adjustable fish passage are all at the same elevation to ensure that the water flow can smoothly connect various parts. When designing the length of the fish pipe 3, it is necessary to fully consider the highest water level upstream of dam 1 to ensure that the fish pipe 3 can cover the entire water level variation range. As the water level variation upstream of dam 1 increases, the length of the fish pipe 3 also needs to be increased accordingly to ensure that fish can pass smoothly at any water level.

[0056] The piers 2 of the present invention are located at the edge of the bank slope, which is convenient for inspection and maintenance. Multiple piers 2 are convenient for horizontal extension. The number of piers 2 increases the length of the fish tube 3, so that the adjustable fish passage can adapt to large-amplitude water level changes.

[0057] When the water level upstream of the dam 1 rises, the fish outlet 31 of the fish pipe 3 becomes higher, and the angle between the fish pipe 3 and the horizontal plane is recorded as , The maximum value of is related to the amplitude of the water level of the reservoir upstream of the dam 1, which is determined according to the maximum slope ratio that the fish can adapt to. It affects the elevation adjustment of the fish pipe 3 at different water levels and the passage efficiency of fish. In order to ensure that the fish pipe 3 can be accurately adjusted according to the actual water level and maintain the stability of the flow state in the fish pipe 3, the fish outlet 31 is determined according to the submerged elevation, water level elevation and Determine the length of fish tube 3.

[0058] Specifically, in this embodiment, the length of the fish tube 3 is equal to the product of the number of buttresses 2 and the distance between buttresses 2. 1 The highest elevation adjusted by the fish pipe 3 is recorded as: elevation max, and the lowest elevation, i.e. the elevation of the fish pipe 3 level, is recorded as: elevation min; the height difference between the elevation max and the elevation min is related to the water level fluctuation amplitude upstream of the dam 1.

[0059] Furthermore, it also includes a guide plate 10; the guide plate 10 is arranged inside the fish tube 3 along the extension direction of the fish tube 3 to optimize the turbulence of the water flow. In order to further enhance the guiding property of the fish tube 3, the guide plates 10 are arranged inside the fish tube 3, and these plates can guide the fish to swim in the correct direction and improve their passage efficiency.

[0060] As an important passage connecting the traditional fishway and the reservoir, the fish tube 3 is made of various impermeable materials to ensure that it is durable and can prevent water leakage. Its cross-sectional dimensions meet the requirements for passing fish, and the cross-sectional shape is circular or rectangular. Specifically, in this embodiment, the fish tube 3 is made of underwater steel and has a rectangular cross-sectional shape.

[0061] In this embodiment, the workflow of the adjustable fish passage is as follows:

[0062] First, the present embodiment sets the submerged elevation of the fish pipe 3 to 1.5 meters. When the water level of the reservoir upstream of the dam changes, assuming that the water level at this time is elevation x, and this elevation is within the adjustable elevation range of the fish pipe 3, that is, elevation min<elevation x<elevation max, then, at this time, the elevation of the position of the fish outlet 31 is: the difference between the elevation x and the submerged elevation, that is, elevation x-1.5 meters.

[0063] Next, using the tangent function in trigonometric functions ( ) to calculate the elevation of each pier 2 support point 7. According to the geometric relationship, the following formula can be obtained:

[0064] at this time: ;

[0065] ;

[0066] ;

[0067] ; ...

[0069] ;

[0070] ;

[0071] In the formula, is the angle between the fish tube and the horizontal plane, is the distance between the piers, is the number of piers, where 1st to 2nd The buttresses are distributed away from the dam 1 in sequence.

[0072] Through the above calculation method, the position elevation of the fish tube 3 on each pier 2 can be obtained when the water level in the reservoir is at any elevation. Then, the height adjustment device is used to drive the fish tube 3 to slide and adjust on each pier 2, so that the fish tube 3 always remains at the preset elevation position. In this way, the fish tube 3 can adjust its elevation in real time with the change of the water level in the reservoir, ensuring smooth and efficient passage of fish.

[0073] The adaptive dynamic water level adjustable fish passage of the present invention significantly improves the flexibility and real-time performance of adjusting the elevation of the fish pipe 3 through the height adjustment device and the pier 2 design. The fish passage of the present invention is not only suitable for reservoirs with large water level fluctuations, but also for reservoirs with small water level fluctuations. More importantly, the design greatly reduces the overall cost of the fish passage project, simplifies the operation process, and effectively saves precious space resources in the reservoir area. This series of advantages not only promotes the sustainable development of water conservancy and hydropower projects, but also demonstrates its value in improving project efficiency.

[0074] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An adaptive dynamic water level adjustable fish passage, characterized in that: It comprises a first fish passage arranged downstream of the dam and an adjustable fish passage arranged upstream of the dam and connected thereto; The adjustable fish passage comprises a plurality of buttresses and a fish tube; The plurality of buttresses are vertically arranged at preset intervals upstream of the dam to provide support for the fish tubes; One end of the fish tube is connected to the first fish passage, and the other end is located upstream of the dam as a fish outlet; The fish tube is laterally connected to the plurality of piers, and the fish tube can slide along the elevation direction of the piers to adjust the position elevation of the fish outlet according to the dynamic water level.

2. The adaptive dynamic water level adjustable fish passage according to claim 1, characterized in that: Also included are multiple height adjustment devices; The multiple height adjustment devices are respectively arranged on the multiple piers, and are used to drive the fish tubes on the piers according to the dynamic water level, so that the fish tubes slide to a preset elevation.

3. The adaptive dynamic water level adjustable fish passage according to claim 2, characterized in that: Each of the height adjustment devices comprises a driving mechanism and a transmission mechanism; The driving mechanism is arranged on the top of the buttress and connected to the transmission mechanism; The transmission mechanism is connected with the fish tube.

4. The adaptive dynamic water level adjustable fish passage according to claim 3, characterized in that: Also includes a support mechanism; The supporting mechanism is connected to the transmission mechanism and carries the fish tube, and is used to drive the fish tube to slide along the elevation direction of the buttress.

5. The adaptive dynamic water level adjustable fish passage according to claim 4, characterized in that: The support mechanism specifically includes a support rod and two sets of pulleys; Each pier includes an opposing set of slide rails; The fish tube is arranged on the support rod; The two groups of pulleys are respectively arranged at two ends of the support rod and slide in the slide rail.

6. The adaptive dynamic water level adjustable fish passage according to claim 3, characterized in that: Also includes a sensing device; The sensor device is arranged on a pier close to the fish outlet, and is used for collecting real-time water level information of an upstream reservoir, and transmitting the real-time water level information to the driving mechanism.

7. The adaptive dynamic water level adjustable fish passage according to claim 1, characterized in that: The fish outlet of the fish tube is provided with a trash rack.

8. The adaptive dynamic water level adjustable fish passage according to claim 1, characterized in that: The length of the fish tube is determined according to the submerged elevation of the fish outlet and the water level fluctuation amplitude upstream of the dam.

9. The adaptive dynamic water level adjustable fish passage according to claim 1, characterized in that: Also includes partition guide plate; The partition guide plate is arranged in the fish tube along the extension direction of the fish tube, and is used for optimizing water flow turbulence.

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