Vertical seam type fishway and dam

Abstract

The utility model designs a vertical seam type fishway and a dam, and relates to the technical field of fishways, on one hand, the vertical seam type fishway comprises an overflow channel, the overflow channel comprises a bottom plate and two side plates which are obliquely arranged, and a forward buffering device and a reverse counteracting device are arranged in the overflow channel; the forward buffering device comprises a short partition plate arranged on one side plate, a long partition plate arranged on the other side plate and a slow flow opening, one end of the short partition plate is obliquely upwards arranged towards the top of the overflow channel, one end of the long partition plate is obliquely upwards arranged towards the top of the overflow channel, and the short partition plate and the long partition plate are arranged at intervals to form the slow flow opening; the reverse counteracting device comprises a plurality of jet flow pipes, a plurality of jet flow openings formed in the jet flow pipes and a water supply assembly used for supplying water into the jet flow pipes, each jet flow opening faces the top of the overflow channel, and the axial directions of the jet flow openings in the different jet flow pipes are consistent. On the other hand, the utility model discloses a dam which comprises a dam body, and the vertical seam type fishway is arranged on the dam body.

Description

Technical Field

[0001] The utility model relates to the technical field of fishways, in particular to a vertical slot fishway and a dam. Background Art

[0002] When building dams to control floods, water conservancy hubs will inevitably separate and block naturally continuous rivers, lakes and reservoirs, causing ecological fragmentation. For fish, discontinuous environmental units and changes in water levels and runoff velocities seriously affect their ability to complete upstream spawning. Fishways are artificially constructed at river obstacles (mainly dams and gates) to assist and guide fish (mainly migratory fish) to pass through, including physical structures, facilities or devices necessary to maintain the safe, timely and efficient passage of fish through obstacles (dams, weirs, etc.) during the migration stage, as well as related engineering operations and measures. Vertical slot fishways are one of the most common and commonly used forms of fishways.

[0003] At present, conventional vertical slot fishways generally only use baffles for energy dissipation, which has limited effect on reducing the kinetic energy of the water in the fishway. In order to reduce the water flow rate to a speed that fish can pass through, the fishway needs to be designed to be longer, which increases the overall cost of the project. Therefore, it is particularly necessary to design a vertical slot fishway that can significantly slow down the water flow rate while keeping the length of the fishway unchanged. Utility Model Content

[0004] The purpose of the utility model is to overcome the problem of poor water flow slowing effect in the prior art. In the first aspect, the application provides a vertical slot fishway, which reduces the water flow velocity from multiple aspects by setting a forward buffer device and a reverse offset device, thereby greatly improving the efficiency of slowing flow;

[0005] On the second aspect, the present application provides a dam, on the dam body of which the above-mentioned vertical slit fishway is arranged to help fish pass through the dam smoothly during the migration stage.

[0006] In order to achieve the above-mentioned object, the utility model provides a vertical slot fishway, including an overflow channel, the overflow channel including an inclined bottom plate and two side plates arranged on opposite sides of the bottom plate, characterized in that a positive buffer device and a reverse offset device are arranged in the overflow channel;

[0007] The positive buffer device includes a short partition plate arranged on one of the side plates, a long partition plate arranged on the other side plate, and a slow flow port, wherein one end of the short partition plate adjacent to the long partition plate is arranged upwardly and tilted toward the top of the overflow channel, and one end of the long partition plate adjacent to the short partition plate is arranged upwardly and tilted toward the top of the overflow channel, and the short partition plate and the long partition plate are arranged at intervals to form the slow flow port;

[0008] The reverse compensation device includes a plurality of jet pipes arranged at intervals along the overflow channel, a plurality of jet ports opened on the jet pipes, and a water supply assembly for supplying water to the jet pipes. Each jet port is arranged toward the top of the overflow channel, and the axial directions of the jet ports on different jet pipes are consistent.

[0009] In some embodiments, multiple short partitions are arranged at intervals and staggered along the overflow channel, any two adjacent short partitions are arranged on different side plates, multiple long partitions are arranged along the overflow channel and correspond one-to-one to the short partitions, and multiple slow flow ports are arranged staggered along the overflow channel.

[0010] In some embodiments, the short partition and the long partition are recessed toward the bottom of the spillway to form a rest room.

[0011] In some embodiments, the jet pipes are parallel to each other, and a plurality of jet pipes are arranged at equal intervals along the overflow channel.

[0012] In some embodiments, the plurality of jet openings are arranged at equal intervals along the length direction of the jet channel.

[0013] In some embodiments, the angle between the axis of the jet port and the horizontal plane is greater than the slope of the overflow channel.

[0014] In some embodiments, the water supply assembly includes a water supply pipe arranged along the length direction of the overflow channel, a water pump connected to one end of the water supply pipe, and a power source for supplying energy to the water pump. One end of the jet pipe is closed and the other end is provided with an opening, and the water supply pipe is connected to one end of the opening of each jet pipe.

[0015] In some embodiments, the power source is a plurality of micro-hydraulic generator sets, which are connected to a water pump via a wire, and correspond one to one with a slow flow outlet. Each micro-hydraulic generator set is arranged at a slow flow outlet and is located at the water outlet end of the slow flow outlet.

[0016] In some embodiments, the power source is a photovoltaic panel, and the water pump is connected to the photovoltaic panel via a wire.

[0017] A second aspect of the present application provides a dam, including a dam body, on which the above-mentioned vertical slot fishway is arranged.

[0018] Through the above technical solution, when the fishway is in normal working state, the water flows from upstream along the overflow channel to downstream. When the water flows through the short partition and the long partition and contacts the curve of the concave part of the partition, the water flow rolls, and changes from the previous binary flow state to a ternary flow state and undergoes strong turbulence, and a large amount of air is mixed in. Part of the kinetic energy of the water flow is converted into heat energy, thereby achieving a certain energy dissipation effect. At the same time, the water in the jet pipe is ejected from the jet port. Since the water flow ejected from the jet port is in the opposite direction to the water flow on the overflow channel, the two streams collide and dissipate energy, further reducing the flow rate of the overflow channel water flow. The present application reduces the water flow rate from multiple aspects, and the efficiency of slow flow is high, which is conducive to ensuring that fish can smoothly trace back during the migration stage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of a vertical slot fishway disclosed in an embodiment of the present application;

[0020] Figure 2 is a schematic diagram of the structure of the dam disclosed in the embodiments of the present application;

[0021] Figure 3 It is a lateral schematic diagram of the vertical slot fishway disclosed in the embodiment of the present application.

[0022] Description of Reference Numerals

[0023] 1. Overflow channel; 11. Bottom plate; 12. Side plate; 2. Short partition; 3. Long partition; 4. Slow flow outlet; 5. Jet pipe; 6. Jet outlet; 7. Water supply assembly; 71. Water supply pipe; 72. Water pump; 73. Micro hydropower generator set; 74. Photovoltaic power generation panel; 8. Rest room; 9. Dam body. DETAILED DESCRIPTION

[0024] In the present invention, unless otherwise stated, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0025] Reference Figure 1 and Figure 2 The present application provides a vertical slot fishway, including an overflow channel 1, the overflow channel 1 including an inclined bottom plate 11 and two side plates 12 arranged on opposite sides of the bottom plate 11, characterized in that a positive buffer device and a reverse offset device are arranged in the overflow channel 1;

[0026] The positive buffer device includes a short partition 2 arranged on one of the side plates 12, a long partition 3 arranged on the other side plate 12, and a slow flow port 4. One end of the short partition 2 adjacent to the long partition 3 is arranged to be inclined upward toward the top of the overflow channel 1, and one end of the long partition 3 adjacent to the short partition 2 is arranged to be inclined upward toward the top of the overflow channel 1. The short partition 2 and the long partition 3 are arranged at intervals to form the slow flow port 4.

[0027] The reverse compensation device includes a plurality of jet pipes 5 arranged at intervals along the overflow channel 1, a plurality of jet ports 6 opened on the jet pipes 5, and a water supply assembly 7 for supplying water to the jet pipes 5. Each jet port 6 is arranged toward the top of the overflow channel 1, and the axial directions of the jet ports 6 on different jet pipes 5 are consistent.

[0028] The vertical slot fishway provided in the present application includes a bottom plate 11 which is arranged obliquely. The bottom plate 11 is a long straight plate. Side plates 12 are fixedly connected to both sides of the bottom plate 11 in the length direction. The two side plates 12 are respectively a left side plate 12 and a right side plate 12. The side plates 12 and the bottom plate 11 are perpendicular to each other. The two side plates 12 are symmetrically arranged about the midline of the bottom plate 11. The bottom plate 11 and the two side plates 12 constitute the overflow channel 1 of the vertical slot fishway, and the water flows down along the overflow channel 1. A short partition 2 is fixedly connected to the top of the left side plate 12. The short partition 2 extends toward the right side plate 12 along the width direction of the bottom plate 11. A long partition 3 is fixedly connected to the top of the right side plate 12. The long partition 3 extends toward the left side plate 12 along the width direction of the bottom plate 11. The length of the long partition 3 in the width direction of the bottom plate 11 is greater than the length of the short partition 2 in the width direction of the bottom plate 11. One end of the short partition 2 adjacent to the long partition 3 is inclined upward toward the top of the overflow channel 1, and one end of the long partition 3 adjacent to the short partition 2 is inclined upward toward the top of the overflow channel 1. The end of the short partition 2 located at a high position is flush with the end of the long partition 3 located at a high position. The short partition 2 and the long partition 3 are spaced apart from each other, and a slow flow port 4 is formed at the separation between the top ends of the short partition 2 and the long partition 3.

[0029] When the fishway is in normal working condition, the water flows from upstream along the overflow channel 1 to downstream. Due to the height difference between upstream and downstream, the water gradually gains greater kinetic energy. When the water flows through the short baffle 2 and the long baffle 3, part of the water flows out from the slow flow port 4, and part of the water collides with the short baffle 2 and the long baffle 3. The water tumbles, changing from the previous binary flow state to a ternary flow state with strong turbulence, mixing in a large amount of air, and part of the kinetic energy of the water flow is converted into heat energy, thereby achieving a certain energy dissipation effect.

[0030] There are multiple jet pipes 5 arranged at intervals along the length direction in the overflow channel 1. The jet pipes 5 are fixedly connected to the bottom plate 11, and the length direction of the jet pipes 5 intersects with the flow direction of the water flow. Each jet pipe 5 is provided with multiple jet ports 6 at intervals. The jet ports 6 are located on the side of the jet pipe 5 facing the top of the overflow channel 1. The axial directions of the jet ports 6 on different jet pipes 5 are consistent, and the opening direction of the jet ports 6 faces the top of the overflow channel 1, that is, the direction of the water sprayed from the jet ports 6 is opposite to the flow direction of the water flow in the overflow channel 1. The present application also includes a water supply component 7 for supplying water to the jet pipe 5. The water supply component 7 is used to continuously supply water to the jet pipe 5. The water entering the jet pipe 5 is sprayed out from the jet ports 6. Since the water flow sprayed from the jet ports 6 is opposite to the direction of the water flow on the overflow channel 1, the two water flows collide and dissipate energy, further reducing the flow rate of the water flow in the overflow channel 1.

[0031] Reference Figure 1 In some embodiments, a plurality of short partitions 2 are arranged at intervals and staggered along the overflow channel 1, and any two adjacent short partitions 2 are arranged on different side panels 12. A plurality of long partitions 3 are arranged along the overflow channel 1 and correspond one-to-one to the short partitions 2, and a plurality of slow flow ports 4 are arranged staggered along the overflow channel 1.

[0032] There are multiple short baffles 2 arranged in an interlaced manner along the length direction of the overflow channel 1. Two adjacent short baffles 2 are located on different side panels 12, and each short baffle 2 is correspondingly provided with a long baffle 3, that is, multiple long baffles 3 are also arranged in an interlaced manner along the length direction of the overflow channel 1. Multiple groups of correspondingly arranged short baffles 2 and long baffles 3 form multiple slow flow ports 4, and because the short baffles 2 and long baffles 3 are arranged in an interlaced manner along the overflow channel 1, the slow flow ports 4 are also arranged in an interlaced manner along the overflow channel 1. The short baffles 2 and long baffles 3 arranged step by step continuously convert the kinetic energy of the water flow, which plays a role in slowing down the flow rate of the water flow.

[0033] Reference Figure 1 In some embodiments, the short partition 2 and the long partition 3 are recessed toward the bottom of the overflow channel 1 to form a rest room 8.

[0034] The short partition 2 and the long partition 3 are both curved plates, and are both concave toward the bottom of the overflow channel 1, and the concave portion forms a rest room 8. The curved plates make the water inlet port of the slow flow port 4 smaller in diameter and the water outlet port larger in diameter. When the water flows through the slow flow port 4, the water flow will diffuse along the convex curve direction of the partition, further weakening the water flow velocity to a certain extent.

[0035] Reference Figure 1 In some embodiments, the jet pipes 5 are parallel to each other, and a plurality of jet pipes 5 are arranged at equal intervals along the overflow channel 1 .

[0036] Reference Figure 1 In some embodiments, a plurality of jet openings 6 are arranged at equal intervals along the length direction of the jet channel.

[0037] The length direction of each jet pipe 5 is consistent with the width direction of the bottom plate 11, so that the multiple jet pipes 5 in the overflow channel 1 are parallel to each other, and the multiple jet pipes 5 are arranged at equal intervals on the bottom plate 11 along the length direction of the bottom plate 11. The multiple jet ports 6 on the same jet pipe 5 are arranged at equal intervals along the length direction of the jet pipe 5, and the jet ports 6 on different jet pipes 5 correspond to each other one by one.

[0038] Reference Figure 1 and Figure 3 In some embodiments, the angle between the axis of the jet port 6 and the horizontal plane is greater than the slope of the overflow channel 1.

[0039] The slope of the overflow channel 1 is A. Since the jet port 6 is arranged toward the top of the overflow channel 1, the axis of the jet port 6 forms a certain angle B with the horizontal plane. <B<90°。

[0040] Reference Figure 1 and Figure 2 In some embodiments, the water supply assembly 7 includes a water supply pipe 71 arranged along the length direction of the overflow channel 1, a water pump 72 connected to one end of the water supply pipe 71, and a power source for supplying energy to the water pump 72. One end of the jet pipe 5 is closed and the other end is provided with an opening. The water supply pipe 71 is connected to one end of the opening of each jet pipe 5.

[0041] A water supply pipe 71 is fixedly connected to one of the side panels 12 of the overflow channel 1. The water supply pipe 71 is arranged along the length direction of the overflow channel 1. The end of the jet pipe 5 away from the water supply pipe 71 is closed, and the end of the jet pipe 5 close to the water supply pipe 71 is open. The water supply pipe 71 is connected to multiple water distribution pipes, which are arranged in the vertical direction. The water distribution pipes are arranged at equal intervals on the water supply pipe 71. The end of each water distribution pipe away from the water supply pipe 71 is connected to the open end of a jet pipe 5, so that the water supply pipe 71 is connected to multiple jet pipes 5 at the same time. A water pump 72 is connected to the top of the water supply pipe 71. A power source for driving the water pump 72 is connected to the water pump 72, and water is continuously fed into the water supply pipe 71 through the water pump 72. The water supply pipe 71, the water pump 72, and the power source together constitute the water supply assembly 7 of the present application, and water is continuously supplied to the jet pipe 5 through the water supply assembly 7.

[0042] Reference Figure 1 and Figure 2 In some embodiments, the power source is a plurality of micro-hydraulic generator sets 73, which are connected to the water pump 72 via wires. The micro-hydraulic generator sets 73 correspond one to one with the slow flow outlets 4, and each micro-hydraulic generator set 73 is arranged at a slow flow outlet 4 and is located at the water outlet end of the slow flow outlet 4.

[0043] A micro-hydraulic generator set 73 is placed at the water outlet of each slow flow outlet 4, and the micro-hydraulic generator set 73 is buried at the bottom of the overflow channel 1. The multiple micro-hydraulic generator sets 73 are connected to the water pump 72 through wires. The micro-hydraulic generator set 73 buried at the bottom of the overflow channel 1 converts part of the kinetic energy of the water into electrical energy, which is transmitted to the water pump 72 through the wire, thereby driving the water pump 72 to work.

[0044] Reference Figure 1 and Figure 2 In some embodiments, the power source is a photovoltaic panel 74, and the water pump 72 is connected to the photovoltaic panel 74 via a wire.

[0045] A photovoltaic panel 74 is installed on the top of the dam, and is connected to a water pump 72 through a wire. The photovoltaic panel 74 is used as a power source, and the photovoltaic panel 74 converts solar energy into electrical energy and transmits it to the water pump 72 through a wire. The water pump 72 uses the obtained electrical energy to pump upstream river water into the water supply pipe 71, and transports it to each water spray pipe through the water supply pipe 71.

[0046] In an optimal embodiment of a vertical slot fishway disclosed in the present application, it includes an inclined bottom plate 11, the bottom plate 11 is a long straight plate, and side plates 12 are fixedly connected to both sides of the bottom plate 11 in the length direction, and the two side plates 12 are respectively a left side plate 12 and a right side plate 12, and the side plates 12 are perpendicular to each other and symmetrically arranged about the center line of the bottom plate 11, and the bottom plate 11 and the two side plates 12 constitute the overflow channel 1 of the vertical slot fishway, and the slope of the overflow channel 1 is 30°. A short partition 2 is fixedly connected to the top of the left side plate 12, and the short partition 2 extends toward the right side plate 12 along the width direction of the bottom plate 11, and a long partition 3 is fixedly connected to the top of the right side plate 12, and the long partition 3 extends toward the left side plate 12 along the width direction of the bottom plate 11, and the length of the long partition 3 in the width direction of the bottom plate 11 is greater than the length of the short partition 2 in the width direction of the bottom plate 11. One end of the short partition 2 adjacent to the long partition 3 is inclined upward toward the top of the overflow channel 1, and one end of the long partition 3 adjacent to the short partition 2 is inclined upward toward the top of the overflow channel 1. The end of the short partition 2 located at a high position is flush with the end of the long partition 3 located at a high position. The short partition 2 and the long partition 3 are spaced apart from each other, and a slow flow port 4 is formed at the separation between the tops of the short partition 2 and the long partition 3. The short partition 2 and the long partition 3 are both curved plates, and are both concave toward the bottom of the overflow channel 1, and a rest room 8 is formed at the concave position. The curved plates make the water inlet port diameter of the slow flow port 4 smaller, while the water outlet port diameter is larger.

[0047] There are multiple short partitions 2 arranged in an interlaced manner along the length direction of the overflow channel 1. Two adjacent short partitions 2 are located on different side panels 12 respectively. Each short partition 2 is correspondingly provided with a long partition 3, that is, multiple long partitions 3 are also arranged in an interlaced manner along the length direction of the overflow channel 1.

[0048] A plurality of jet pipes 5 are arranged at intervals along the length direction in the overflow channel 1. The jet pipes 5 are fixedly connected to the bottom plate 11. The length direction of the jet pipes 5 intersects with the flow direction of the water flow. A plurality of jet ports 6 are arranged at intervals on each jet pipe 5. The jet ports 6 are located on the side of the jet pipe 5 facing the top of the overflow channel 1. The axial directions of the jet ports 6 on different jet pipes 5 are consistent. The opening direction of the jet ports 6 faces the top of the overflow channel 1. The angle between the jet ports 6 and the horizontal plane is 30°.

[0049] The length direction of each jet pipe 5 is consistent with the width direction of the bottom plate 11, so that the multiple jet pipes 5 in the overflow channel 1 are parallel to each other, and the multiple jet pipes 5 are arranged at equal intervals on the bottom plate 11 along the length direction of the bottom plate 11. The multiple jet ports 6 on the same jet pipe 5 are arranged at equal intervals along the length direction of the jet pipe 5, and the jet ports 6 on different jet pipes 5 correspond to each other one by one.

[0050] A water supply pipe 71 is fixedly connected to the top surface of the right side plate 12 of the overflow channel 1. The water supply pipe 71 is arranged along the length direction of the overflow channel 1. The end of the jet pipe 5 away from the water supply pipe 71 is closed, and the end of the jet pipe 5 close to the water supply pipe 71 is open. The water supply pipe 71 is connected to multiple water distribution pipes, which are arranged in the vertical direction and arranged at equal intervals on the water supply pipe 71. The end of each water distribution pipe away from the water supply pipe 71 is connected to the open end of a jet pipe 5, so that the water supply pipe 71 is connected to multiple jet pipes 5 at the same time. A water pump 72 is connected to the top of the water supply pipe 71.

[0051] A micro-hydraulic generator set 73 is placed at the water outlet of each slow flow outlet 4 . The micro-hydraulic generator set 73 is buried at the bottom of the overflow channel 1 . The multiple micro-hydraulic generator sets 73 are connected to the water pump 72 through wires.

[0052] A photovoltaic panel 74 is installed on the top of the dam, and the photovoltaic panel 74 is also connected to the water pump 72 through a wire.

[0053] Reference Figure 2 The present application also discloses a dam, including a dam body 9, on which the above-mentioned vertical slit fishway is arranged, the top of the overflow channel 1 is connected to the top surface of the dam body 9, and the overflow channel 1 is arranged to be inclined downward in a direction away from the dam body 9.

[0054] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0055] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A vertical slot fishway, comprising an overflow channel (1), wherein the overflow channel (1) comprises an inclined bottom plate (11) and two side plates (12) arranged on opposite sides of the bottom plate (11), characterized in that: A forward buffer device and a reverse offset device are arranged in the overflow channel (1); The positive buffer device comprises a short partition (2) arranged on one of the side plates (12), a long partition (3) arranged on the other side plate (12), and a slow flow outlet (4); one end of the short partition (2) adjacent to the long partition (3) is arranged obliquely upward toward the top of the overflow channel (1); one end of the long partition (3) adjacent to the short partition (2) is arranged obliquely upward toward the top of the overflow channel (1); the short partition (2) and the long partition (3) are arranged at intervals to form the slow flow outlet (4); The reverse compensation device comprises a plurality of jet pipes (5) arranged at intervals along the overflow channel (1), a plurality of jet ports (6) provided on the jet pipes (5), and a water supply assembly (7) for supplying water into the jet pipes (5), each of the jet ports (6) being arranged toward the top of the overflow channel (1), and the axial directions of the jet ports (6) on different jet pipes (5) being consistent.

2. A vertical slot fishway according to claim 1, characterized in that: A plurality of short partitions (2) are arranged in an interlaced manner along the overflow channel (1); any two adjacent short partitions (2) are arranged on different side plates (12); a plurality of long partitions (3) are arranged along the overflow channel (1) and correspond one to one with the short partitions (2); and a plurality of slow flow ports (4) are arranged in an interlaced manner along the overflow channel (1).

3. A vertical slot fishway according to claim 2, characterized in that: The short partition (2) and the long partition (3) are recessed toward the bottom of the overflow channel (1) to form a rest room (8).

4. The vertical slot fishway according to claim 1, characterized in that: The jet pipes (5) are parallel to each other, and a plurality of the jet pipes (5) are arranged at equal intervals along the overflow channel (1).

5. A vertical slot fishway according to claim 4, characterized in that: The plurality of jet ports (6) are arranged at equal intervals along the length direction of the jet pipe (5).

6. A vertical slot fishway according to claim 5, characterized in that: The angle between the axis of the jet port (6) and the horizontal plane is greater than the slope of the overflow channel (1).

7. The vertical slot fishway according to claim 1, characterized in that: The water supply assembly (7) comprises a water supply pipe (71) arranged along the length direction of the overflow channel (1), a water pump (72) connected to one end of the water supply pipe (71), and a power source for supplying energy to the water pump (72); one end of the jet pipe (5) is closed and the other end is provided with an opening; the water supply pipe (71) is connected to one end of the opening of each of the jet pipes (5).

8. The vertical slot fishway according to claim 7, characterized in that: The power source is a plurality of micro-hydraulic generator sets (73), the micro-hydraulic generator sets (73) are connected to the water pump (72) via a wire, the micro-hydraulic generator sets (73) correspond to the slow flow outlets (4) one by one, and each micro-hydraulic generator set (73) is arranged at one of the slow flow outlets (4) and is located at the water outlet end of the slow flow outlet (4).

9. The vertical slot fishway according to claim 7, characterized in that: The power source is a photovoltaic power generation panel (74), and the water pump (72) is connected to the photovoltaic power generation panel (74) via a wire.

10. A dam, characterized in that: It comprises a dam body (9), on which a vertical slot fishway as claimed in any one of claims 1 to 9 is arranged.

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