Double-lock-chamber fishway inlet structure

Abstract

The invention relates to the technical field of fish migration channels, in particular to a double-lock-chamber fishway inlet structure, which comprises a double-lock-chamber part, a fishway inlet and a migration channel are respectively arranged at inlets and outlets at two ends of the double-lock-chamber part; a concrete side wall is arranged in the lock chamber foundation and used for dividing the lock chamber foundation into a main lock chamber and an auxiliary lock chamber. Through the double-lock-chamber design, the two migration fishways which are arranged in parallel and communicated are provided, the water level of a single channel is convenient to adjust, the adjustability is high, the water level difference and the water flow exchange amount between the two lock chambers can be flexibly adjusted, the problem that a single-lock-chamber structure is poor in adaptability to water level changes is solved, and the passing requirements of various fishes can be met; by means of the mode of combining water flow disturbance and light fish luring, bionic water flow and targeted spectrum double fish luring can be achieved, the attraction to fishes is remarkably improved, the flow dividing design of the double-lock-chamber fish inlet channel can meet the passing requirements of fishes of different body types, and the fish passing efficiency is further improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fish migration channel, and particularly relates to a double-gate chamber fishway inlet structure. BACKGROUND

[0002] As a key ecological facility for protecting fish migration in water conservancy projects, the rationality of the inlet structure of the fishway directly affects the fish passage efficiency and ecological benefits. The existing fishway inlet adopts a single-gate chamber structure, which adjusts the water level and flow through a single gate. However, there are many deficiencies in practical application: on the one hand, the single-gate chamber structure has poor adaptability to changes in water level. When the water level fluctuates greatly, it is difficult to maintain the appropriate water level difference and water flow velocity at the fishway inlet, which makes it difficult for fish to enter the fishway; on the other hand, the water flow conditions of the single-gate chamber inlet are single, which cannot meet the needs of different fish species for water flow velocity and water flow pattern, and the fish passage species are limited. Therefore, it is an urgent problem to be solved in the field of ecological construction of water conservancy projects to develop a fishway inlet structure that can adapt to wide water level changes, meet the needs of multiple fish species, and has good fish attracting effect. In view of this, we propose a double-gate chamber fishway inlet structure. SUMMARY

[0003] The purpose of the present application is to solve the problems mentioned in the background art, and to provide a double-gate chamber fishway inlet structure.

[0004] In order to solve the above technical problems, the present application adopts the following technical scheme: A double-gate chamber fishway inlet structure comprises: A double-gate chamber part comprises a gate chamber foundation provided with a fishway inlet and a migration channel at both ends; A concrete side wall is arranged in the gate chamber foundation, which is used to separate a main gate chamber and a secondary gate chamber, and the main gate chamber and the secondary gate chamber are arranged in parallel and are connected between the fishway inlet and the migration channel.

[0005] Preferably, the concrete side wall comprises a secondary gate chamber passage foundation forming a continuous S-shaped passage in the secondary gate chamber, and a shunt partition foundation used to separate the fishway inlet to form a first fish passage and a second fish passage; A main and secondary gate chamber separation foundation is fixedly connected between the secondary gate chamber passage foundation and the shunt partition foundation.

[0006] Preferably, a water replenishment pool for adjusting the migration water depth is formed by a water-permeable steel plate arranged in a ring shape at the fishway inlet, and a water replenishment steel pipe for connecting an external water replenishment source is arranged on the water replenishment pool. A water replenishment section drainage channel for draining water is arranged above the water replenishment pool.

[0007] Preferably, the first fish inlet channel has a channel depth lower than that of the second fish inlet channel.

[0008] Preferably, the first fish inlet channel and the second fish inlet channel are respectively connected to the auxiliary gate chamber and the main gate chamber.

[0009] Preferably, the main auxiliary gate chamber is provided with an auxiliary gate chamber gate well for separating the auxiliary gate chamber from the migration channel, and a main gate chamber gate well for separating the main gate chamber from the migration channel. The auxiliary gate chamber gate well and the main gate chamber gate well are respectively provided with hydraulic lifting gates for adjusting flow rate.

[0010] Preferably, a plurality of spiral agitators for disturbing water flow to attract fish migration are installed along the first fish inlet channel and the second fish inlet channel, and the rotation directions of the spiral agitators are sequentially and oppositely arranged along the water flow direction.

[0011] Preferably, light fish luring devices are installed in the first fish inlet channel and the second fish inlet channel.

[0012] Preferably, the fishway inlet control water depth is 1.0m-2.0m, and the control flow rate is 0.7m / s-1.2m / s.

[0013] Preferably, fishway slow flow guide baffles are installed in the auxiliary gate chamber gate well and the main gate chamber gate well.

[0014] Compared with the prior art, the beneficial effects of the present application are: 1. The double-chamber fishway inlet structure provides two parallel and connected migration fishways through double-chamber design, which is convenient for adjusting the water level of a single channel, has strong adjustment, can flexibly adjust the water level difference and water flow exchange between the two chambers, solves the problem of poor adaptability of single-chamber structure to water level changes, and is conducive to meeting the passing needs of multiple fish species. 2. The application can realize bionic water flow and targeted spectrum double fish luring through the combination of water flow disturbance and light fish luring, significantly improves the attraction to fish, and the shunt design of the double-chamber fish inlet channel can meet the passing needs of fish of different sizes, further improving the fish passing efficiency. BRIEF DESCRIPTION OF DRAWINGS The drawings accompanying the specification of the present application serve to provide a further understanding of the present application, and the illustrative embodiments of the present application and their descriptions serve to explain the present application, and do not constitute an improper limitation on the present application. In the drawings: Figure 1 is a plan view of the present application; Figure 2 is a plan view of the present application Figure 1 is a plan view of the present application Figure 3 For the invention Figure 1 B-B section view of the invention; Figure 4 For the invention side section view; Figure 5 For the invention fishway slow flow guide baffle in the migratory channel.

[0015] The meaning of each reference in the figure is: 1, the gate chamber foundation; 101, the migratory channel; 102, the fishway entrance; 103, the auxiliary gate chamber gate well; 104, the main gate chamber gate well; 2, the main and auxiliary gate chamber separation foundation; 3, the auxiliary gate chamber passage foundation; 4, the first fish inlet passage; 5, the second fish inlet passage; 6, the shunt separation foundation; 7, the fishway slow flow guide baffle; 8, the water replenishment pool; 9, the water permeable steel plate; 10, the water replenishment steel pipe; 11, the water replenishment section drainage channel. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0017] Please refer to Figures 1-5 , the technical solutions are described in detail by the following embodiments: The fishway entrance structure of the double gate chamber in the embodiment comprises: The double gate chamber part, as shown in Figure 1 , comprises the gate chamber foundation provided with the fishway entrance 102 and the migratory channel 101 at the inlet and outlet of both ends, and the double gate chamber is arranged to adapt to the wide water level change and meet the passing needs of multiple fish species; that is, the gate chamber is divided into the main gate chamber and the auxiliary gate chamber by the main and auxiliary gate chamber separation foundation 2 fixedly connected between the auxiliary gate chamber passage foundation 3 and the shunt separation foundation 6 in the gate chamber foundation 1, and the main gate chamber and the auxiliary gate chamber are arranged in parallel and are connected between the fishway entrance 102 and the migratory channel 101.

[0018] In order to increase the migratory path and the rest area in the middle, the fishway slow flow guide baffles 7 are installed in the passages between the auxiliary gate chamber gate well 103 and the main gate chamber gate well 104, and a continuous S-shaped migratory channel is formed in the auxiliary gate chamber, and the shunt separation foundation 6 separates the fishway entrance 102 to form the first fish inlet passage 4 and the second fish inlet passage 5, which adjusts to different water flow velocities and water depths to facilitate the migration of different fish groups.

[0019] The embodiment is provided with a water supplement pool 8 at the fishway inlet 102 for adjusting the water depth for migration, and a water supplement steel pipe 10 is arranged on the water supplement pool 8 for connecting with a water supplement source, for adjusting the liquid level, and when the liquid level needs to be lowered, the water can be discharged through a water supplement section drain channel 11 arranged above the water supplement pool 8 to lower the liquid level.

[0020] As shown in the structure shown in Figure 3 , the first fish inlet channel 4 has a channel depth lower than that of the second fish inlet channel 5, which is suitable for the migration of fish groups in different water depths; specifically, as shown in Figure 1 , the first fish inlet channel 4 and the second fish inlet channel 5 are respectively connected with the auxiliary lock chamber and the main lock chamber, in order to facilitate the adjustment of the flow rate, the water depth of the fishway inlet 102 is controlled to be between 1.0m-2.0m, and the auxiliary lock chamber is separated from the migration channel 101 by an auxiliary lock chamber gate well 103 arranged on the auxiliary lock chamber partition 2, and the main lock chamber gate well 104 is arranged for separating the main lock chamber from the migration channel 101, and the flow rate is adjusted to be within the range of 0.7m / s-1.2m / s by controlling the hydraulic lifting gate in the auxiliary lock chamber gate well 103 and the main lock chamber gate well 104, so as to facilitate the fish groups to obtain a good swimming state.

[0021] Considering that the simple migration channel is not attractive to fish groups and the migration utilization rate is low, the embodiment is provided with a light fish attracting device in the first fish inlet channel 4 and the second fish inlet channel 5, which attracts fish by targeted spectrum; and the embodiment is provided with a spiral agitator in the first fish inlet channel 4 and the second fish inlet channel 5, the rotation direction of the spiral agitator is sequentially and oppositely arranged along the water flow direction, forming a bionic water flow in the channel to attract fish migration.

[0022] It should be noted that if the embodiment of the present application involves directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture, and if the specific posture changes, the directional indications will also change accordingly.

[0023] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A double-chamber fishway inlet structure, characterized in that: include: The double-gate section includes a gate foundation (1) with a fish passage inlet (102) and a migration channel (101) at both ends; The gate chamber foundation (1) is provided with a concrete side wall, which is used to separate and form a main gate chamber and a secondary gate chamber. The main gate chamber and the secondary gate chamber are arranged in parallel and connected between the fish passage inlet (102) and the migratory channel (101).

2. The double-chamber fishway inlet structure as described in claim 1, characterized in that: The concrete sidewall includes a secondary gate chamber channel foundation (3) that forms a continuous S-shaped channel in the secondary gate chamber, and a diversion partition foundation (6) for separating the fish passage inlet (102) to form a first fish inlet channel (4) and a second fish inlet channel (5). The main and auxiliary gate chamber separation foundation (2) is fixedly connected between the auxiliary gate chamber channel foundation (3) and the diversion isolation foundation (6).

3. The double-chamber fishway inlet structure as described in claim 2, characterized in that: At the fishway inlet (102), a water replenishment pool (8) is formed by a permeable steel plate (9) arranged in a ring for adjusting the depth of the migratory water. The water replenishment pool (8) is provided with a water replenishment steel pipe (10) for connecting to an external water source. Above the water replenishment pool (8) is a water replenishment section drainage channel (11) for water discharge.

4. The double-chamber fishway inlet structure as described in claim 2, characterized in that: The depth of the first fish inlet channel (4) is lower than the depth of the second fish inlet channel (5).

5. The double-chamber fishway inlet structure as described in claim 3, characterized in that: The first fish inlet channel (4) and the second fish inlet channel (5) are respectively connected to the auxiliary gate chamber and the main gate chamber.

6. The double-chamber fishway inlet structure as described in claim 5, characterized in that: The main and auxiliary gate chamber separation foundation (2) is provided with an auxiliary gate chamber gate well (103) for separating the auxiliary gate chamber from the migratory channel (101), and a main gate chamber gate well (104) for separating the main gate chamber from the migratory channel (101). The auxiliary gate chamber gate well (103) and the main gate chamber gate well (104) are respectively equipped with hydraulic lifting gates for adjusting flow velocity and flow rate.

7. The double-chamber fishway inlet structure as described in claim 2, characterized in that: Multiple spiral stirrers for disturbing the water flow and attracting fish to migrate are installed in the No. 1 fish inlet channel (4) and the No. 2 fish inlet channel (5), and the rotation directions of the spiral stirrers are alternately arranged in opposite directions along the water flow direction.

8. The double-chamber fishway inlet structure as described in claim 7, characterized in that: Fish-attracting devices with lights are installed in the No. 1 fish-inlet channel (4) and the No. 2 fish-inlet channel (5).

9. The double-chamber fishway inlet structure as described in claim 6, characterized in that: The fishway inlet (102) controls the water depth to 1.0m-2.0m and the flow velocity to 0.7m / s-1.2m / s.

10. The double-chamber fishway inlet structure as described in claim 6, characterized in that: Both the auxiliary gate chamber gate well (103) and the main gate chamber gate well (104) are equipped with fishway flow slowing guide plates (7).

Images