Multifunctional fishway with underground excavation structure

Abstract

The utility model provides a multifunctional fishway with an underground excavation structure. The multifunctional fishway with the underground excavation structure comprises a tunnel, a pedestrian path, a drainage channel, a fishway groove and a partition wall, the partition wall extends in the length direction of the tunnel and is arranged in the tunnel, the tunnel is horizontally divided into two spaces, the space on one side is the first space, and the first space is arranged to be the fishway groove; the space on the other side divided by the partition wall is a second space, the bottom of the second space is provided with a drainage channel, the drainage channel is covered with a cover plate, and a pedestrian path is formed on the cover plate. The multifunctional fishway with the underground excavation structure has the advantages of having multiple functions and not occupying too much extra natural space.

Description

Technical Field

[0001] The utility model relates to the technical field of fishway construction, and specifically, to a multi-functional fishway with a concealed excavation structure. Background Art

[0002] A fishway is an artificial passage for fish migration. The main purpose of its construction is to take remedial measures for the original natural fish migration passage damaged by human activities, and it is commonly found in river channel operation projects, such as the construction of sluices or dams.

[0003] The layout of traditional fishway structures is planned and arranged on the same side of the river or beside the power station in forms such as the shore - bypass type, grid type, multi - unfolding and folding type, tower type, etc. in combination with the natural terrain and topography. It is necessary to avoid unstable bank slope areas, and the structural design is all in the form of trough - type and open structure, which is only used as a fish - passing facility.

[0004] There is little research on the underground concealed excavation and buried fishway structures, and the open - structure fishway has little reference significance for the concealed excavation fishway.

[0005] In addition, the existing trough - type and open - type structures are additional structures outside the dam. The planning and layout technology has a large floor area, great construction destructiveness, and large interference. It is not conducive to soil and water conservation, environmental protection, and has a high investment cost and single function.

[0006] Therefore, the demand for concealed excavation fishways is increasing day by day. However, the concealed excavation difficulty is slightly higher, and it seems a bit wasteful to only use it as a fishway. Therefore, designing a fishway structure with multiple functions integrated has become an urgent problem to be solved. Summary of the Utility Model

[0007] The purpose of the utility model is to overcome the deficiencies of the prior art, and thus provide a multi - functional fishway with a concealed excavation structure that has multiple functions and does not occupy too much additional natural space.

[0008] To achieve the above purpose, the technical solution adopted by the utility model is: a multi - functional fishway with a concealed excavation structure, including a tunnel and a pedestrian passage, a drainage channel, a fishway trough, and a partition wall arranged in the tunnel;

[0009] The partition wall is arranged in the tunnel along the length direction of the tunnel, horizontally dividing the tunnel into two spaces. One of the spaces is the first space, and the first space is set as the fishway trough;

[0010] The other space separated by the partition wall is the second space. The bottom of the second space is set as the drainage channel, and a cover plate is laid on the drainage channel, and a pedestrian passage is formed above the cover plate.

[0011] Preferably, the top end of the partition wall is not connected to the top end of the tunnel.

[0012] Preferably, the mouth of the drainage channel is narrowed and provided with steps, and the cover plate is laid on the steps.

[0013] Preferably, the cover plate is a steel grid cover plate.

[0014] Preferably, partition plates and guide plates are arranged at equal intervals along the length direction of the tunnel in the fishway trough. One end of the partition plate is connected to the partition wall, and the other end is close to the guide plate. One end of the guide plate is connected to the inner wall of the tunnel, and the other end is close to the partition plate;

[0015] Along the water flow direction, the end of the guide plate adjacent to the partition plate is located behind the partition plate.

[0016] Preferably, the end of the guide plate adjacent to the partition plate is arranged with a horizontal offset or a gap.

[0017] Preferably, the guide plate and the bottom plate are connected to the partition wall, the inner wall of the tunnel or the bottom wall of the tunnel by bolts.

[0018] Preferably, the cross-section of the tunnel is a horseshoe-shaped cross-section, the height of the tunnel ≤ 4.5m, and a concrete lining and a shotcrete with wire mesh structural layer are arranged inside the tunnel.

[0019] Preferably, the width of the fishway trough ≤ 2.3m, and the bottom width of the drainage channel ≤ 1m.

[0020] Preferably, the height of the partition plate and the guide plate ≤ 1.7m.

[0021] The utility model has substantial features and progress compared with the prior art. Specifically, the underground excavation structure fishway provided by the utility model has less damage to the natural vegetation on the shore, makes full use of underground resources with extremely small floor area, is beneficial to soil and water conservation, has little interference with other surface construction buildings during construction, and has a low overall investment cost, and is worthy of promotion in the subsequent planning and design of river-blocking hydropower facility buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a cross-sectional view of a multi-functional underground excavation structure fishway in the utility model.

[0023] Figure 2 is a proportional view of a standard pool chamber in the fishway trough of a multi-functional underground excavation structure fishway in the utility model.

[0024] Figure 3 is a proportional view of a rest pool chamber in the fishway trough of a multi-functional underground excavation structure fishway in the utility model.

[0025] Figure 4 is a schematic diagram of the connection of the partition plate or the guide plate in the utility model.

[0026] In the figure: 1. Tunnel; 2. Pedestrian passage; 3. Drainage channel; 4. Fishway trough; 5. Partition wall; 6. Cover plate; 11. Concrete structure layer; 12. Internal structure layer; 41. Partition board; 42. Guide board. Specific implementation manner

[0027] Next, through specific implementation manners, the technical solutions of the present utility model will be further described in detail.

[0028] As Figures 1 - 4 shown, a multi-functional mined structure fishway includes a tunnel 1 and a pedestrian passage 2, a drainage channel 3, a fishway trough 4, and a partition wall 5 provided in the tunnel 1.

[0029] The tunnel 1 is a rock or soil tunnel, adopting a horseshoe-shaped cross-section structure. In this embodiment, the size is 3.3m×3.95 - 4.5m. After manual or mechanical excavation, initial shotcrete support and secondary concrete lining are completed. Specifically, shotcrete with wire mesh is applied on the outer layer to form a concrete structure layer 11, and an internal structure layer 12 is formed by secondary concrete lining on the inner layer.

[0030] The partition wall 5 is arranged in the tunnel 1 along the length direction of the tunnel 1, horizontally dividing the tunnel 1 into two spaces, and the top end of the partition wall 5 is not connected to the top end of the tunnel 1.

[0031] In this embodiment, the partition wall is made of cast-in-place concrete structure and is integrated with the concrete lining of the tunnel. One of the spaces is the first space, and the first space is set as the fishway trough 4;

[0032] The other space separated by the partition wall 5 is the second space. The bottom of the second space is set as the drainage channel 3, and a cover plate 6 is laid on the drainage channel 3, and a pedestrian passage 2 is formed above the cover plate 6.

[0033] In this embodiment, on the left side of the tunnel along the flowing direction of the water is the fishway, and on the right side at the bottom is the drainage channel and at the top is the pedestrian passage.

[0034] The fishway trough 4 adopts a rectangular cross-section, with a size of 2.0m×1.8 - 2.3m. A partition board 41 and a guide board 42 are arranged in the fishway trough 4 every 2.5m. The size of the partition board 41 is 170×133.3×20cm (height×width×thickness), and the size of the guide board 42 is 170×50×20cm (height×width×thickness), and it is fixed to the side walls on both sides by angle steel + expansion bolts.

[0035] In this embodiment, one end of the partition board 41 is connected to the partition wall and the other end is close to the guide board, and one end of the guide board 42 is connected to the inner wall of the tunnel and the other end is close to the partition board;

[0036] Along the water flow direction, the end of the guide plate 42 adjacent to the partition plate 41 is located behind the partition plate 41. The end of the guide plate 42 adjacent to the partition plate 41 is offset or spaced in the horizontal direction to facilitate the fish to turn back during migration.

[0037] The bottom width of the drainage channel is 1.0 m. When discharging water, the water depth is less than 0.5 m, and the maximum discharge is less than 0.6 m 3 / s. It adopts a cast-in-place reinforced concrete structure. Its mouth is narrowed and provided with steps, which is called a concrete corbel support structure in this industry. The cover plate is laid on the steps.

[0038] To avoid flooding the sidewalk, the cover plate 6 is a steel grid cover plate.

[0039] In this solution, due to the adoption of the design of the underground excavation structure, by excavating the underground passage, it can meet the upstream and downstream fish migration, and at the same time it can also be used for people to pass through, and provide a drainage channel for regulating the water flow, with multiple functions, and can avoid damaging other natural environments on the ground to the greatest extent.

[0040] Finally, it should be noted that: The above has described the preferred embodiments of this patent in detail, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of this patent.

Claims

1. A multifunctional dark-dug structure fishway, characterized by: Including tunnels and pedestrian walkways, sluiceways, fishways and partitions provided in tunnels; The partition wall is arranged in the tunnel and extends along the length direction of the tunnel, and divides the tunnel horizontally into two spaces, one side of which is a first space, and the first space is set as the fishway groove; The space on the other side separated by the partition wall is a second space, the bottom of the second space is arranged as a drainage channel, a cover plate is laid on the drainage channel, and a pedestrian passage is formed on the cover plate.

2. The multifunctional dark-dug structure fishway according to claim 1 is characterized by: The top of the partition wall is not connected to the top of the tunnel.

3. The multifunctional dark-dug structure fishway according to claim 1 or 2, characterized in that: The mouth of the drainage channel is narrowed and provided with steps, and the cover plate is laid on the steps.

4. The multifunctional dark-dug structure fishway according to claim 3 is characterized by: The cover plate is a steel grille cover plate.

5. The multifunctional dark-dug structure fishway according to claim 4 is characterized in that: The fishway trough is provided with partitions and guide plates at equal intervals along the length direction of the tunnel, one end of the partition is connected to the partition wall and the other end is close to the guide plate, and one end of the guide plate is connected to the inner wall of the tunnel and the other end is close to the partition plate; Along the water flow direction, one end of the guide plate adjacent to the partition is located behind the partition.

6. The multifunctional dark-dug structure fishway according to claim 5 is characterized by: The guide plate is staggered or spaced apart from one end adjacent to the partition plate in the horizontal direction.

7. The multifunctional dark-dug structure fishway according to claim 6 is characterized by: The guide plate and the bottom plate are connected to the partition wall or the inner wall of the tunnel or the bottom wall of the tunnel through bolts.

8. The multifunctional dark-dug structure fishway according to claim 7 is characterized by: The cross section of the tunnel is a city gate tunnel type cross section, the height of the tunnel is ≤4.5m, and the inner layer of the tunnel is provided with a concrete lining and a mesh concrete structure layer.

9. The multifunctional dark-dug structure fishway according to claim 8 is characterized in that: The width of the fishway is ≤2.3m, and the bottom width of the drainage channel is ≤1m.

10. The multifunctional dark-dug structure fishway according to claim 9, characterized in that: The height of the partition and the guide plate is ≤1.7m.

Images