A sewer reconstruction fishway and a method of sewer reconstruction fishway

Abstract

A kind of drain pipe reconstruction fishway and the method of drain pipe reconstruction fishway, it is related to the technical field of fishway, its structure is: including drain pipe, fishway outlet, fishway entrance and fishway connecting structure, the upper end of drain pipe is provided with fishway outlet, the lower end of drain pipe is sequentially provided with fishway connecting structure and fishway entrance, baffle is arranged in drain pipe, fishway outlet includes box, flow control device and buffer zone, one end of box is open, the other end of box is connected on drain pipe, flow control device is arranged in box, flow control device includes water inlet and gate, and buffer zone is formed between flow control device and drain pipe.The beneficial effects of the present application are that: fishway is formed by using drain pipe, which avoids the waste of resources caused by the later abandonment of drain pipe, and also solves the resource consumption of separately building fishway, drain pipe does not need to consume manpower and material resources to fill, and fishway does not need to be built separately, which can utilize abandoned buildings and save a lot of manpower and material resources.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fishways, in particular to a drainage pipe modified fishway and a method for modifying a drainage pipe into a fishway. BACKGROUND

[0002] When a dam is being built, drainage and waterproofing are considered. For large dams, cofferdams are used for drainage and waterproofing. For small dams, cofferdams are used for water diversion and waterproofing. However, considering ecological issues and flood season, drainage pipes are pre-embedded in the dam body during the initial construction period, and are used for drainage during the construction period.

[0003] When a dam is being built, a special fishway is built to provide a migration channel for fish. The fishway is a separate construction project, and the fishway engineering is also a large engineering quantity, which requires time and effort to build.

[0004] Currently, the drainage pipes at the bottom of the dam are only used as drainage pipes, and are abandoned after the dam is completed. The drainage pipes are filled, which wastes resources and requires manpower and material resources to fill. The fishway is also separately constructed, which requires a large amount of manpower and material resources. Currently, the drainage pipes are not utilized after the completion of the dam construction, and the fishway is not constructed with other resources. Both are separately constructed and used. SUMMARY

[0005] In view of the deficiencies of the prior art, the present application provides a drainage pipe modified fishway and a method for modifying a drainage pipe into a fishway to solve the above problems.

[0006] The present application provides a drainage pipe modified fishway and a method for modifying a drainage pipe into a fishway, which comprises a drainage pipe, a fishway outlet, a fishway inlet and a fishway connecting structure. The upper end of the drainage pipe is provided with a fishway outlet, and the lower end of the drainage pipe is sequentially provided with a fishway connecting structure and a fishway inlet. A baffle is arranged in the drainage pipe. The fishway outlet comprises a box body, a flow control device and a buffer zone. One end of the box body is open, and the other end of the box body is connected to the drainage pipe. The flow control device is arranged in the box body. The flow control device comprises a water inlet and a gate. The flow control device and the drainage pipe form a buffer zone therebetween.

[0007] The flow control device separates the opening of the box body and the buffer zone.

[0008] A plurality of baffles are arranged in the buffer zone.

[0009] The water inlet and the gate are provided with one or more than one.

[0010] The fishway connecting structure comprises two side walls and a baffle.

[0011] The baffle includes side baffle A, middle baffle A, side baffle B and middle baffle B, the side baffle A and the middle baffle A are arranged in the drain pipe, and the side baffle B and the middle baffle B are arranged in the fishway connecting structure.

[0012] The side wall baffle A is arranged on the two sides of the inner wall of the drain pipe, the middle baffle A is arranged in the middle of the drain pipe and is fixed on the bottom of the drain pipe, the side wall baffles A are arranged at equal intervals in the drain pipe, and the middle baffle A is arranged between the two side wall baffles A.

[0013] The side wall baffle B is arranged on the two side walls of the fishway connecting structure, the middle baffle B is arranged in the middle of the fishway connecting structure, the side wall baffles B are arranged at equal intervals on the two sides of the side wall, and the middle baffle B is arranged between the two side wall baffles B.

[0014] The fishway entrance is an open entrance in the shape of a splayed end.

[0015] The multi-stage baffle is in the shape of an arc, the arc surface is a water-facing surface, and the flow velocity of water flow is reduced.

[0016] The baffle is in the shape of an arc, the arc surface is a water-facing surface, and the flow velocity of water flow is reduced.

[0017] The method for transforming the drain pipe into a fishway comprises the following steps: constructing a drain pipe at the initial stage of dam construction, draining water through the drain pipe during the dam construction process, constructing a fishway outlet and a fishway entrance at the head and tail of the drain pipe after the completion of the dam construction, connecting the fishway entrance and the drain pipe through a fishway connecting structure, arranging side wall baffles A and middle baffles A in the drain pipe, arranging side wall baffles B and middle baffles B in the fishway connecting structure, arranging a flow control device and a buffer zone at the fishway outlet, arranging the flow control device as a gate and a water inlet, controlling the flow of the water inlet through the opening degree of the gate, and buffering the water flow through the multi-stage baffles.

[0018] The use method of the application is as follows: the drain pipe is transformed into a fishway, the head and tail of the drain pipe are respectively a fishway outlet and a fishway entrance, the water flow is controlled through the gate at the water inlet, the flow velocity of water flow is reduced through the multi-stage baffles and the side wall baffles A, the middle baffles A, the side wall baffles B and the middle baffles B, and the needs of fish migration are met.

[0019] The application has the advantages that the drain pipe is transformed into a fishway, resource waste caused by the later-stage abandonment of the drain pipe is avoided, resource consumption for separately constructing a fishway is solved, the drain pipe does not need to consume manpower and material resources for filling, and the fishway does not need to be separately constructed, the drain pipe is used to construct a fishway, the abandoned building is utilized, a large amount of manpower and material resources are saved, the fishway is better in reducing the flow velocity through the buffer zone, and the fish migration is more favorable. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 This is a structural diagram of the present invention;

[0021] Fig. 2 This is a cross-sectional view of the drainage pipe of the present invention;

[0022] Fig. 3 This is a front view of structure 2 of the present invention;

[0023] In the diagram: 1. Drainage pipe, 2. Fishway outlet, 3. Fishway connection structure, 4. Fishway inlet, 11. Flange, 12. Side baffle A, 13. Middle baffle A, 21. Box body, 22. Opening, 23. Flow control device, 24. Buffer zone, 25. Multi-stage baffle, 26. Inlet, 27. Gate, 31. Side baffle B, 32. Middle baffle B, 33. Side wall. Detailed Implementation

[0024] Example 1

[0025] like Figs. 1-3 As shown, the present invention provides a fishway modified by a drainage pipe and a method for modifying a fishway by a drainage pipe. Its structure includes a drainage pipe 1, a fishway outlet 2, a fishway inlet 4, and a fishway connecting structure 3. The upper end of the drainage pipe 1 is provided with the fishway outlet 2, and the lower end of the drainage pipe 1 is provided with the fishway connecting structure 3 and the fishway inlet 4 in sequence. A baffle is provided inside the drainage pipe 1. The fishway outlet 2 includes a box 21, a flow control device 23, and a buffer zone 24. One end of the box 21 is an opening 22, and the other end of the box 21 is connected to the drainage pipe 1. The flow control device 23 is provided inside the box 21. The flow control device 23 includes an inlet 26 and a gate 27. The flow control device 23 and the drainage pipe 1 form a buffer zone 24.

[0026] Furthermore, the drain pipe is fixedly connected via flange 11.

[0027] Furthermore, the flow control device 23 separates the opening 22 of the housing 21 from the buffer zone 24.

[0028] Furthermore, the buffer zone 24 is provided with multi-level baffles 25, which are arranged in 4 rows. The number of multi-level baffles 25 decreases sequentially from the water inlet 26 to the drain pipe 1. The first row is provided with 4 multi-level baffles 25, the second row with 3 multi-level baffles 25, the third row with 2 multi-level baffles 25, and the fourth row with 1 multi-level baffle 25.

[0029] Furthermore, one inlet 26 and one gate 27 are provided.

[0030] Furthermore, the fishway connection structure 3 includes two side walls 33 and baffles.

[0031] Furthermore, the baffle includes a side baffle A12, a middle baffle A13, a side baffle B31, and a middle baffle B32. The drain pipe 1 is provided with a side baffle A12 and a middle baffle A13, and the fish passage connection structure 3 is provided with a side baffle B31 and a middle baffle B32.

[0032] Furthermore, the side wall 33 baffle A is provided on both sides of the inner wall of the drain pipe 1, the intermediate baffle A13 is provided in the middle of the drain pipe 1 and fixed at the bottom of the drain pipe 1, the side wall 33 baffle A is provided at equal intervals in the drain pipe 1, and four intermediate baffles A13 are provided between the two side wall 33 baffles A.

[0033] Furthermore, the sidewall 33 baffles B are installed on both sides of the fishway connecting structure 3, the intermediate baffles B32 are installed in the middle of the fishway connecting structure 3, the sidewall 33 baffles B are installed at equal intervals on both sides inside the sidewall 33, and four intermediate baffles B32 are installed between the two sidewall 33 baffles B.

[0034] Furthermore, the fishway entrance 4 is an open entrance in the shape of an "eight".

[0035] Furthermore, the multi-stage baffle 25 is an arc-shaped plate with the arc surface facing the water to reduce the water flow velocity.

[0036] Furthermore, the baffle is an arc-shaped plate with the arc surface facing the water, which reduces the water flow while also removing silt.

[0037] Example 2

[0038] like Figs. 1-3 As shown, the present invention provides a fishway modified from a drain pipe 1 and a method for modifying a fishway from a drain pipe 1. Its structure includes a drain pipe 1, a fishway outlet 2, a fishway inlet 4, and a fishway connecting structure 3. The upper end of the drain pipe 1 is provided with a fishway outlet 2, and the lower end of the drain pipe 1 is provided with a fishway connecting structure 3 and a fishway inlet 4 in sequence. A baffle is provided inside the drain pipe 1. The fishway outlet 2 includes a box 21, a flow control device 23, and a buffer zone 24. One end of the box 21 is an opening 22, and the other end of the box 21 is connected to the drain pipe 1. The flow control device 23 is provided inside the box 21. The flow control device 23 includes a water inlet 26 and a gate 27. A buffer zone 24 is formed between the flow control device 23 and the drain pipe 1.

[0039] Furthermore, the flow control device 23 separates the opening 22 of the housing 21 from the buffer zone 24.

[0040] Further, four rows of multi-stage baffles 25 are arranged in the buffer zone 24, and the number of multi-stage baffles 25 in each row decreases in turn, the first row is provided with 7 multi-stage baffles 25, the second row is provided with 5 multi-stage baffles 25, the third row is provided with 3 multi-stage baffles 25, and the first row is provided with 1 multi-stage baffle 25.

[0041] Further, the water inlet 26 and the gate 27 are provided with 6.

[0042] Further, the fishway connecting structure 3 includes two side walls 33 and baffles.

[0043] Further, the baffles include edge baffles A12, intermediate baffles A13, edge baffles B31 and intermediate baffles B32, the edge baffles A12 and the intermediate baffles A13 are arranged in the drain pipe 1, and the edge baffles B31 and the intermediate baffles B32 are arranged in the fishway connecting structure 3.

[0044] Further, the side wall 33 baffle A is arranged on the inner wall of the drain pipe 1, the intermediate baffle A13 is arranged in the middle of the drain pipe 1 and fixed at the bottom of the drain pipe 1, the side wall 33 baffle A is arranged in the drain pipe 1 in staggered equal intervals, and 5 intermediate baffles A13 are arranged between the two side wall 33 baffles A.

[0045] Further, the side wall 33 baffle B is arranged on the two side walls 33 of the fishway connecting structure 3, the intermediate baffle B32 is arranged in the middle of the fishway connecting structure 3, the side wall 33 baffle B is arranged in the side wall 33 in equal intervals on both sides, and 5 intermediate baffles B32 are arranged between the two side wall 33 baffles B.

[0046] Further, the fishway inlet 4 is an open eight-shaped inlet.

[0047] Further, the multi-stage baffles 25 are arc-shaped, the arc surface is the water-facing surface, and the flow velocity is reduced.

[0048] Further, the baffles are arc-shaped, the arc surface is the water-facing surface, and the flow is reduced while the silt is removed.

[0049] Example 3

[0050] The application provides a fishway for a drainage pipe 1 and a method for transforming the fishway for the drainage pipe 1. The method for transforming the fishway for the drainage pipe 1 is as follows: a drainage pipe 1 is built in the initial stage of dam building, the drainage pipe 1 performs drainage work during dam building, a fishway outlet 2 and a fishway inlet 4 are built at the head and tail of the drainage pipe 1 after the completion of dam building, the fishway inlet 4 is connected with the drainage pipe 1 through a fishway connecting structure 3, side edge baffles A12 and middle baffles A13 are installed in the drainage pipe 1, side edge baffles B31 and middle baffles B32 are arranged in the fishway connecting structure 3, a flow control device 23 and a buffer zone 24 are arranged at the fishway outlet 2, the flow control device 23 is a gate 27 and a water inlet 26, the flow of the water inlet 26 is controlled through the opening degree of the gate 27, and the buffer zone 24 is provided with multiple-stage baffles 25 for buffering water flow.

Claims

1. A sewer renovation fishway characterized by: The utility model provides a fishway structure, including drain pipe, fishway exit, fishway entrance and fishway connecting structure, the upper end of drain pipe is provided with fishway exit, the lower end of drain pipe is sequentially provided fishway connecting structure and fishway entrance, the inside of drain pipe is provided with baffle, the fishway exit includes box, flow control device and buffer area, one end of box is open, the other end of box is connected on drain pipe, the inside of box is provided with flow control device, flow control device includes water inlet and gate, and the buffer area is formed between flow control device and drain pipe, the fishway connecting structure includes two side walls and baffle, the baffle includes side baffle A, intermediate baffle A, side baffle B and intermediate baffle B, the inside of drain pipe is provided with side baffle A and intermediate baffle A, the inside of fishway connecting structure is provided with side baffle B and intermediate baffle B, the side baffle A is provided on the two sides of the inner wall of drain pipe, the intermediate baffle A is provided in the middle of drain pipe and is fixed on the bottom of drain pipe, the side baffle A is staggered and equally spaced in the drain pipe, and the intermediate baffle A is arranged between the two side baffles A, the side baffle B is arranged on the two side walls of fishway connecting structure, the intermediate baffle B is arranged in the middle of fishway connecting structure, the side baffle B is equally spaced on the two sides of the side wall, and the intermediate baffle B is arranged between the two side baffles B, the baffle is arc-shaped, and the arc surface is the water-facing surface, the opening of box and buffer area are separated by flow control device, a plurality of baffles are arranged in the buffer area, the plurality of baffles in the buffer area are arranged in four rows, the number of baffles in the first row is four, and the number of baffles in each subsequent row is reduced by one, or the number of baffles in the first row is seven, and the number of baffles in each subsequent row is reduced by two, the adjacent two rows of baffles are staggered, the plurality of baffles are arc-shaped, and the arc surface is the water-facing surface.

2. A sewer renovation fishway according to claim 1, characterized in that: The water inlet and the gate are provided with more than one.

3. A sewer renovation fishway according to claim 2, characterized in that: The fishway entrance is an open entrance in the shape of a splayed.

4. A method of retrofitting a drain pipe into a fishway according to claim 3, wherein: The drain pipe is built in the early stage of dam construction, the drain pipe drains water during dam construction, the fishway exit and the fishway entrance are built at the head and tail of the drain pipe after the completion of dam construction, the fishway entrance is connected to the drain pipe through the fishway connecting structure, the side baffle A and the intermediate baffle A are installed in the drain pipe, the side baffle B and the intermediate baffle B are arranged in the fishway connecting structure, the flow control device and the buffer area are arranged at the fishway exit, the flow control device is provided with the gate and the water inlet, the flow of the water inlet is controlled by the opening degree of the gate, and the buffer area is provided with a plurality of baffles to buffer the water flow.

Images