Hydro-junction

Abstract

The utility model relates to the technical field of hydropower station structures, in particular to a hydro-junction which comprises a water retaining dam, a flood discharge gate and a power station and further comprises a fishway, the fishway is arranged at one end of a hydro-junction body, the upstream section and the downstream section of the fishway are arranged on the two sides of the hydro-junction body respectively, and the downstream section of the fishway comprises a vertical unit and a vertical seam type unit. The vertical units are arranged in the vertical direction, the vertical units meet the backflow requirement of climbing aquatic animals, the vertical units are connected to the vertical seam type units, and the upstream section of the fishway comprises the vertical seam type units. According to the device, the vertical unit and the vertical seam type unit are arranged on the fishway of the downstream section, the vertical unit meets the backflow requirement of climbing aquatic animals, the vertical seam type fishway meets the backflow requirement of other aquatic animals, and the problem that in the prior art, a fishway arranged on a hydro-junction is not suitable for the aquatic animals with the climbing habit; the backflow of the aquatic animals with the climbing habit is influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of hydropower station structures, in particular to a water conservancy hub. Background Art

[0002] A water conservancy hub is an important part of water conservancy projects. It refers to a combination of hydraulic structures with different functions built at suitable locations in rivers or channels with the goal of promoting benefits and eliminating harm.

[0003] Water conservancy hubs usually have dams, flood discharge gates, power stations and fishways. However, the existing fishways are only designed for fish swimming, without considering the movement habits of aquatic animals with climbing habits such as eels and Hepu mitten crabs, which affects the migration of these animals and is not conducive to the protection of ecological diversity. Utility Model Content

[0004] The utility model aims to solve the problem that the fishway arranged in the water conservancy hub in the prior art is not suitable for aquatic animals with climbing habits, thus affecting the migration of aquatic animals with climbing habits, and provides a water conservancy hub.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A water conservancy hub comprises a dam, a flood discharge gate and a power station, and also comprises a fishway, wherein the fishway is arranged at one end of the dam, and the upstream section and downstream section of the fishway are respectively arranged on both sides of the dam, and the downstream section of the fishway comprises an auxiliary fishway and a main fishway, wherein the auxiliary fishway is arranged in a vertical direction and adapted to the migratory needs of climbing aquatic animals, and the auxiliary fishway is connected to the main fishway of the downstream section, and the distance from the connection between the auxiliary fishway and the main fishway to the dam is shorter than the distance from the main fishway entrance of the downstream section to the dam, and the upstream section of the fishway comprises the main fishway.

[0007] The fishway is set at one end of the water conservancy hub to avoid the interference of the flood discharge gate on the migrating fish as much as possible. Auxiliary fishways and main fishways are set up in the downstream section. The auxiliary fishway can meet the migratory needs of aquatic animals with climbing habits such as eels and Hepu mitten crabs; the main fishway can meet the migratory needs of other aquatic animals. The auxiliary fishway is connected to the main fishway, so climbing aquatic animals enter the main fishway through the auxiliary fishway in the downstream stage and then enter the upstream section.

[0008] As a preferred solution of the utility model, the auxiliary fishway is provided with a plurality of entrances at intervals along its length direction.

[0009] The auxiliary fishway is provided with multiple entrances at intervals along its axial direction to avoid congestion of reptiles and aquatic animals as much as possible, which would affect the migration of fish and thus the environment.

[0010] As a preferred solution of the utility model, a climbing matrix is ​​provided inside the auxiliary fishway.

[0011] Because the auxiliary fishway is arranged vertically, a climbing matrix is ​​arranged inside it to facilitate the movement of aquatic animals with climbing habits, which is beneficial to protecting the environment.

[0012] As a preferred solution of the utility model, the inner wall of the main fishway is inlaid with stones.

[0013] The inner wall of the main fishway refers to the inner side wall and inner bottom surface of the main fishway. The inner wall of the main fishway is inlaid with stones to meet the movement needs of climbing aquatic animals.

[0014] As a preferred solution of the utility model, the stone is a pebble with a diameter of 2-5 cm.

[0015] The stones are pebbles, which can avoid sharp parts that may harm aquatic animals as much as possible. The pebbles are 2-5cm in size, which can avoid the stones being too large to affect the area inside the fishway, and the stones being too small to affect the movement of aquatic animals with climbing habits.

[0016] As a preferred embodiment of the present invention, the main fishway in the downstream section comprises a plurality of climbing sections arranged side by side, two adjacent climbing sections are connected in series, and the main fishway is a serpentine component.

[0017] The vertical slot fishway is provided with at least two climbing sections, and the climbing sections are connected in series, which can reduce the angle of each climbing section as much as possible, avoid fish being washed down the fishway by water as much as possible, and is beneficial to protecting the ecology.

[0018] As a preferred solution of the utility model, a plurality of partitions are arranged at intervals along the axis of the inner wall of the climbing section, and the partitions connected to the two inner walls are arranged in a staggered manner.

[0019] Because the climbing section is at an angle, a number of partitions are provided on the inner wall of the climbing section, which can prevent fish from being washed down by water when migrating inside the fishway.

[0020] As a preferred solution of the present utility model, the width of the partition is greater than or equal to the width of the main fishway.

[0021] The width of the baffle is the distance from the free end of the baffle to the inner wall of the fishway it is connected to. The width of the baffle should not be less than 1 / 2 of the width of the fishway, and the baffles on the inner walls on both sides are staggered to avoid aquatic animals being pushed back by the water flow when moving inside the fishway because there is no baffle to support them.

[0022] As a preferred solution of the utility model, two adjacent climbing sections are connected in series via an arc section, the slope of the inner bottom surface of the arc section is 0, and the arc section is connected to the auxiliary fishway.

[0023] The slope of the bottom surface of the arc section is 0, which is connected to the auxiliary fishway. Therefore, aquatic plants entering the main fishway through the auxiliary fishway can rest here. There is no partition inside the arc section, and the space is large. When aquatic animals in the auxiliary fishway enter the main fishway, there will be no congestion, which will affect the migration speed.

[0024] As a preferred solution of the utility model, the auxiliary fishway is connected to the arc section closest to the water retaining dam through a connecting section.

[0025] The arc section closest to the water conservancy hub is farthest from the entrance of the main fishway. Connecting the auxiliary fishway here can facilitate the migration of aquatic plants with climbing properties and avoid congestion inside the fishway as much as possible.

[0026] As a preferred solution of the present utility model, the auxiliary fishway is a spiral structure, and the axis of the auxiliary fishway is along the vertical direction.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0028] A water conservancy hub is provided with a fishway at one end of a water retaining dam, wherein the fishway in the downstream section comprises an auxiliary fishway and a main fishway, wherein the auxiliary fishway is adapted to the migratory needs of climbing aquatic animals, and the vertical slit fishway meets the migratory needs of other aquatic animals, thereby solving the problem in the prior art that the fishway provided in the water conservancy hub is not suitable for aquatic animals with climbing habits, thus affecting the migration of aquatic animals with climbing habits. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a plan layout diagram of a water conservancy project in Example 1;

[0030] Figure 2 is a schematic structural diagram of the auxiliary fishway in Example 1;

[0031] Figure 3 It is a structural schematic diagram of the main fishway in Example 1.

[0032] Icons: 1- retaining dam, 2- flood discharge gate, 3- bottom hole for water discharge, 4- fishway, 401- auxiliary fishway, 402- main fishway, 403- partition, 404- connecting section, 405- bracket, 5- power station, 6- retaining wall. DETAILED DESCRIPTION

[0033] The utility model is described in detail below in conjunction with the accompanying drawings.

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0035] In the description of the following specific embodiments, the terms indicating the orientation or position relationship such as "upper", "lower", "left", "right", "center", "inside", "outside", etc. are all based on the expression of the orientation or position relationship shown in the drawings, or the orientation or position relationship when the device / apparatus is usually used. These terms of orientation or position relationship are only for the convenience of description or simplification of the description in the specific embodiments, so that technicians can quickly understand the scheme, rather than indicating or implying that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific position relationship, and therefore cannot be understood as a limitation of the present invention.

[0036] The terms "horizontal" and "vertical" and the like do not mean that the corresponding devices / components / elements are required to be absolutely horizontal or vertical or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding devices / components / elements are set in specific directions such as "horizontal" and "vertical", and can have an error / deviation of ±10% relative to the corresponding direction setting, more preferably an error / deviation within ±8%, more preferably an error / deviation within ±6%, more preferably an error / deviation within ±5%, and more preferably an error / deviation within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its role in the solution of the utility model.

[0037] The terms “first”, “second”, “third”, etc. are merely used to distinguish the same or similar components and should not be understood as emphasizing or implying the relative importance of specific components.

[0038] The terms "set", "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 welding, riveting, bolting, threaded connection and other commonly used connection methods in the field. It can be directly connected or indirectly connected through an intermediate medium. It can also be the internal connection of two elements.

[0039] Example 1

[0040] like Figure 1As shown, a water conservancy hub includes a dam 1, a flood discharge gate 2 and a power station 5, and also includes a fishway 4, wherein the fishway 4 is arranged at one end of the dam 1, and the upstream section and downstream section of the fishway 4 are respectively arranged on both sides of the dam 1, and the downstream section of the fishway 4 includes an auxiliary fishway 401 and a main fishway 402, wherein the auxiliary fishway 401 is arranged in a vertical direction, and the auxiliary fishway 401 is adapted to the migration needs of climbing aquatic animals, and the auxiliary fishway 401 is connected to the main fishway 402, and the upstream section of the fishway 4 includes the main fishway 402. Figure 1 The arrows in the figure indicate the direction of water flow.

[0041] like Figure 2 As shown, the auxiliary fishway 401 is provided with a plurality of entrances at intervals along its length direction. In this embodiment, an entrance with a diameter of 100 mm is provided at intervals of 1 m. A bracket 405 is provided between two adjacent entrances for fixing the auxiliary fishway 401 to the retaining wall 6. The auxiliary fishway 401 has a climbing matrix (not shown in the figure) inside. In this embodiment, the climbing matrix is ​​a plastic pipe to facilitate the migration of aquatic animals with climbing habits.

[0042] The inner wall of the main fishway 402 is inlaid with stones. The inner wall of the main fishway 402 refers to the inner side wall and the inner bottom surface of the main fishway 402. The inner wall of the main fishway 402 is inlaid with stones, which can meet the movement needs of climbing aquatic animals. In this embodiment, the stones used are pebbles with a diameter of 2-5 cm.

[0043] like Figure 3 As shown, the main fishway 402 includes a plurality of climbing sections arranged side by side, and two adjacent climbing sections are connected in series, and the main fishway 402 is a serpentine component. The inner side wall of the climbing section is provided with a plurality of partitions 403 at intervals along its axis, and the partitions 403 connected to the two inner side walls are arranged in a staggered manner. The width of the partition 403 is greater than or equal to the width of the main fishway 402. The two adjacent climbing sections are connected in series through an arc section, and the slope of the inner bottom surface of the arc section is 0, and the arc section is connected to the auxiliary fishway 401. The slope of the inner bottom surface of the arc section is 0, and it is connected to the auxiliary fishway 401, so the aquatic plants entering the main fishway 402 through the auxiliary fishway 401 can buffer and rest here. No partition 403 is provided inside the arc section, and the space is large. When the aquatic animals inside the auxiliary fishway 401 enter the main fishway 402, there will be no congestion, which will affect the migration speed. The auxiliary fishway 401 is connected to the arc section closest to the water retaining dam 1 through a connecting section. The arc section closest to the water conservancy hub is farthest from the entrance of the main fishway 402. Connecting the auxiliary fishway 401 here can facilitate the migration of aquatic plants with climbing properties and avoid congestion inside the fishway 4 as much as possible.

[0044] In this embodiment, the auxiliary fishway 401 is a vertical structure. Figure 2However, the auxiliary fishway 401 can also be replaced by a fishway in a spiral ascending form, with the axis of the spiral line being along the vertical direction.

[0045] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A water conservancy project, comprising a dam (1), a flood discharge gate (2) and a power station (5), characterized in that: The invention also comprises a fishway (4), wherein the fishway (4) is arranged at one end of the water retaining dam (1), and the upstream section and downstream section of the fishway (4) are arranged on both sides of the water retaining dam (1), respectively; the downstream section of the fishway (4) comprises an auxiliary fishway (401) and a main fishway (402); the auxiliary fishway (401) is arranged in a vertical direction, and the auxiliary fishway (401) is adapted to the migration needs of climbing aquatic animals; the auxiliary fishway (401) is connected to the main fishway (402) of the downstream section; the distance from the connection point of the auxiliary fishway (401) and the main fishway (402) to the water retaining dam (1) is shorter than the distance from the entrance of the main fishway (402) of the downstream section to the water retaining dam (1); and the upstream section of the fishway (4) comprises the main fishway (402).

2. A water conservancy hub according to claim 1, characterized in that: The auxiliary fishway (401) is provided with a plurality of entrances at intervals along its length direction.

3. A water conservancy hub according to claim 1, characterized in that: The auxiliary fishway (401) has a climbing matrix inside.

4. A water conservancy hub according to claim 1, characterized in that: The inner wall of the main fishway (402) is inlaid with stones.

5. A water conservancy hub according to claim 4, characterized in that: The stones are pebbles with a diameter of 2-5 cm.

6. A water conservancy hub according to any one of claims 1 to 5, characterized in that: The main fishway (402) of the downstream section comprises a plurality of climbing sections arranged side by side, and two adjacent climbing sections are connected in series. The main fishway (402) is a serpentine component.

7. A water conservancy hub according to claim 6, characterized in that: The inner side wall of the climbing section is provided with a plurality of partitions (403) at intervals along its axis, and the partitions (403) connected to the two inner side walls are arranged in a staggered manner.

8. A water conservancy hub according to claim 6, characterized in that: Two adjacent climbing sections are connected in series via an arc section, the slope of the inner bottom surface of the arc section is 0, and the arc section is connected to the auxiliary fishway (401).

9. A water conservancy hub according to claim 8, characterized in that: The auxiliary fishway (401) is connected to the arc section closest to the water retaining dam (1) via a connecting section.

10. A water conservancy project according to any one of claims 1 to 5, characterized in that: The auxiliary fishway (401) is a spiral structure, and the axis of the auxiliary fishway (401) is along the vertical direction.

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