CN106689011A - Mobile slope-type eel slide - Google Patents

Abstract

The invention discloses a movable slope-type eel passage, which includes a vertically inclined fish passage, a telescopic support mechanism connected and supported under the fish passage, and a climbing layer arranged in the fish passage And the fish creel collecting device arranged at the exit of the fishway; the downward end opening of the fishway forms the entrance of the fishway, and the upward end opening forms the entrance of the fishway Export. The movable slope-type eel track of the present invention has a simple structure, is movable, and is convenient to operate. It can most effectively help young eels to grow and migrate, effectively solve the problem of hindered eel growth and migration in estuary areas, and protect two rare eel resources in my country. At the same time, it fills the gap in the form of eel road in my country.

Description

Movable slope type eel road

technical field

The invention relates to a fish passing building, in particular to a movable slope type eel passage.

Background technique

According to the widely accepted division method in the world, there are 16 species of fish in the genus Eel. There are two kinds of eel distributed in my country, namely Japanese eel and flower eel. Flower eel is commonly found in rivers and seas in Fujian, Guangdong, Taiwan, Hainan and other provinces. Both are downriver migratory fishes. After sexual maturity, they descend down rivers to the ocean to reproduce. The hatched larvae then slowly float to the mainland and enter rivers to grow. There are currently a large number of river-blocking structures built in the estuary area of our country, most of which did not consider the migration needs of eel, a special fish, and blocked the migration channel of eel, resulting in a sharp decrease in the number of two types of eel in my country today. As a national second-class protected animal, the resources of Japanese eel are also showing a trend of decreasing day by day, and the situation is very serious.

Fishways are considered to be the most effective form of fish-passing facilities for communicating fish migration channels. The development of fishway construction in my country has roughly experienced three stages: initial development, stagnation, and secondary development. Now fishways have once again become a research hotspot in the industry. Generally speaking, the fishways in our country mainly involve diaphragm type, original ecological type, and trough type fishways, and there has been no specific fishway structure for eels.

Juvenile eels have poor swimming ability, but strong climbing ability. This particularity makes eel passages very different from conventional fish passages. According to the characteristics of eels, setting up special fish passages to meet their migration needs will help to solve the trend of depletion of eel fish resources in my country, and has great practical significance and ecological benefits for maintaining the fish resources of two kinds of eels in my country.

Contents of the invention

The technical problem to be solved by the present invention is to provide a movable slope eel track which is simple in structure, convenient in operation and can effectively help young eels migrate.

The technical solution adopted by the present invention to solve the technical problem is to provide a movable slope-type eel passage, which includes a fish passage arranged obliquely in the vertical direction, a telescopic support mechanism connected and supported under the fish passage, a set The climbing layer in the fishway, and the fish basket collecting device arranged at the outlet of the fishway; the downward end opening of the fishway forms the entrance of the fishway, upwards The end opening of the fishway forms the outlet of the fishway.

Preferably, the included angle between the fishway and the horizontal plane is 15-45°.

Preferably, the telescopic support mechanism includes a telescopic support cylinder and a truss; the top of the telescopic support cylinder is connected to the fishway, and the two ends of the truss are respectively connected to the fishway and the telescopic support bottom of the barrel.

Preferably, the climbing layer includes a cushion layer laid on the inner bottom surface of the fishway, and a climbing structure protruding from the cushion layer.

Preferably, the cushion layer is a concrete layer, and the climbing structure includes a plurality of concrete bumps or brush structures distributed at intervals on the cushion layer.

Preferably, the fish basket collection device includes a collection container with a closed top and a reverse structure arranged in the collection container;

The collection container is connected to the outlet of the fish passage and communicated with the fish passage;

The reversing structure includes an inverted eight-shaped reversing piece connected to the inner wall of the collection container.

Preferably, the movable sloping eel passage further includes a shading plate that can be movably covered on the fish passage.

Preferably, the movable slope-type eel passage also includes a fish lure light arranged at the entrance of the fish passage and a diversion pipe for attracting water; the diversion pipe is located between the fish lure light and the fish passage. between the roads.

Preferably, the included angle between the incident angle of the fish luring light and the water flow direction is 45°.

Preferably, the movable slope-type eel passage further includes a water supply device for providing thin-layer water flow to the fish passage.

Preferably, the water supply device includes a water supply pump and a water supply pipe, and the water supply pipe is connected to an outlet of the water supply pump and extends into the fish basket collecting device.

The beneficial effect of the present invention: the structure is simple and movable, and the operation is convenient, it can most effectively help young eels to grow and migrate, effectively solve the problem of hindered growth and migration of eels in estuary areas, and fill my country's eels while protecting two rare eel resources in our country The track form is blank. in:

1. The overall structure is simple, the volume is light and handy, and the operation is convenient. Compared with the traditional fishway, it does not require too much mechanical auxiliary equipment and manpower arrangement, which saves the construction cost to the greatest extent;

2. The simple structure is movable. In the actual project, the entrance position of the eel passage can be changed according to the actual situation downstream, which effectively guarantees the optimal hydraulic entrance position and solves the problem of failure of the traditional fish passage due to excessive fluctuation of the downstream water level. ;

3. The setting of the telescopic support mechanism makes the fishway have the function of slope adjustment. According to the size of the water head of different barrage structures, the fish basket collection device can be effectively connected with the upstream, which is suitable for various engineering examples;

4. Only a very small flow of water is needed in the fishway to provide a thin layer of water flow for the eels to climb, which solves the water contradiction between the operation of the traditional fishway and other functions of the reservoir.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing and embodiment, in the accompanying drawing:

Fig. 1 is a front view sectional structure schematic diagram of a movable slope type eel channel according to an embodiment of the present invention;

Fig. 2 is a top view structural diagram of a movable slope-type eel channel according to an embodiment of the present invention.

detailed description

In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

The movable slope type eel channel of the present invention is used to be arranged at places such as river barrage buildings to help eels such as eels migrate.

As shown in Figures 1 and 2, the movable slope-type eel passage according to an embodiment of the present invention includes a fish passage 10 inclined vertically, a telescopic support mechanism 20 connected and supported below the fish passage 10, and a The climbing layer 30 in the fishway 10 and the fish basket collecting device 40 arranged at the exit of the fishway 10 .

The movable slope-type eel passage can be arranged on a river barrage building, and the inclined setting of the fish passage 10 corresponds to the trend of extending from downstream to upstream, forming a ramp. The downward end of the fishway 10 corresponds to the downstream of the river blocking structure, and the upward end corresponds to the upstream of the river blocking structure. Wherein, the downward end opening of the fishway 10 forms the entrance of the fishway, and the upward end opening of the fishway 10 forms the outlet of the fishway.

The angle between the fishway 10 and the horizontal plane is 15-45° (the slope of the fishway 10), and the specific angle can be adjusted according to the situation in actual use.

The cross-section of the fishway 10 is U-shaped, and the middle channel is for eels to pass through. Preferably, the fishway 10 can be made of U-shaped steel, and the length can be set as required.

The telescopic support mechanism 20 is supported between the bottom of the fishway 10 and the bottom of the river barrage, and is used to adjust the slope of the fishway 10, and locate the fishway 10 on the river barrage with a certain inclination angle.

In this embodiment, the telescopic support mechanism 20 includes a telescopic support cylinder 21 and a truss rod 22 . The top of the telescopic support cylinder 21 can be connected to the fishway 10 by welding, and the gradient of the fishway 10 can be adjusted by elongation or shortening. The telescopic support cylinder 21 can be formed by socketing at least two sleeves, and a switch is provided at the sockets to fix the sleeves.

Both ends of the truss rod 22 are respectively connected to the bottom of the fishway 10 and the telescopic support tube 21 to enhance the support of the telescopic support tube 21 and improve the stability of the fishway 10 . Both ends of the truss 22 are hingedly connected to the fishway 10 and the telescopic support cylinder 21, so that the inclination angle of the truss 22 can vary with the expansion and contraction of the telescopic support cylinder 21 and the gradient of the fishway 10.

The telescopic support mechanism 20 is not limited to one group, and can be two groups as shown in FIG. 2 , relatively supported under the fishway 10 . The telescopic support cylinder 21 can also be replaced by a telescopic cylinder or the like.

The climbing layer 30 is laid on the inner bottom surface of the fishway 10, which helps the eels to exert their climbing ability, and climbs along the fishway 10 to the upstream. The climbing layer 30 includes a cushion layer 31 laid on the inner bottom surface of the fishway, and a climbing structure 32 protrudingly arranged on the cushion layer 31 .

Preferably, the cushion layer 31 is a concrete layer, which is formed by pouring concrete slurry and curing in the fishway 10 . The climbing structure 32 may include a plurality of concrete bumps, which may be integrally formed on the underlayment 31 . A plurality of concrete blocks are distributed at intervals on the cushion layer 31 , and can be distributed in a quincunx shape, arranged in parallel in multiple rows, or the like. Concrete bumps can also be replaced by brush structures (brush strips, etc.).

Fish basket collecting device 40 can comprise the collecting container 41 of top closure, can be formed by welding such as iron plate or steel plate, and peripheral shape is not limited. The collection container 41 is connected to the outlet of the fish passage 10 and communicates with the fish passage 10 , eels passing through the fish passage 10 can enter the collection container 41 . The collection container 41 may be in the shape of an inverted cone as a whole.

The fish basket collecting device 40 also includes a reverse structure 42 arranged in the collecting container 41 to prevent the eels from entering the collecting container 41 and then swimming out, thereby improving the collection efficiency.

Wherein, the reversing structure 42 includes an inverted eight-shaped reversing piece connected to the inner wall of the collection container 41, so that the fish crate collecting device 40 forms a fish crate. The reverse sheet can be an iron sheet or a steel sheet connected on opposite walls of the collection container 41 , or a funnel-shaped annular iron sheet or steel sheet connected on the inner peripheral wall of the collection container 41 .

Further, the movable slope eel passage also includes a shading plate 50 that can be movably covered on the fish passage 10 . The light shield 50 can be made of lightweight iron sheet, and it is connected to the side wall of the fishway 10 in a hinge connection mode, which can provide a cave environment for the eels to attract the eels to go up, and can effectively prevent fish-eating birds from Attack of eels in fishway 10.

Further, the movable slope-type eel passage also includes a fish luring light 60 arranged at the entrance of the fish passage 10 and a water diversion pipe 70 for attracting water flow, which effectively guides the upward tracing entrance for the eels and ensures a higher passage of the eel passage. Rate. The water diversion pipeline 70 is located between the fish luring light 60 and the fishway 10 .

Wherein, the fish lure light 60 is set at the entrance of the fishway 10, which helps the eel to find the entrance to enter the fishway 10. The angle of incidence of the fish luring lamp 60 is 45° with the direction of water flow. According to the young eel's tendency to weak purple light, the fish luring lamp 60 is preferably a purple underwater landscape lamp and its power is 3W.

In this embodiment, two rows of fish luring lights 60 are arranged on opposite sides of the entrance of the fishway 10 respectively.

The water diversion pipeline 70 is towards the inlet of the fishway 10 with the water outlet, and is used to produce the favorite flow velocity of the eel, and leads it to the fishway 10 inlet. In this embodiment, there are two diversion pipes 70, which are respectively arranged on opposite sides of the entrance of the fishway 10. The distance between the water outlets of the two water diversion pipes 70 is less than the distance between the two rows of fish luring lights 60 .

The movable slope eel way also includes a water supply device 80 for providing thin-layer water flow for the fishway 10 . The water supply device 80 pumps water to the fish basket collecting device 40 and flows to the fish passage 10 , forming a thin layer of water flow covering the climbing layer 30 in the fish passage 10 .

Alternatively, the water supply device 80 includes a water supply pump 81 and a water supply pipe 82 , and the water supply pipe 82 is connected to the outlet of the water supply pump 81 and extends into the fish basket collecting device 40 . The water supply pump 81 can directly take water from the downstream of the barrage building, which solves the contradiction of using water in the operation of the traditional fishway and other functions of the reservoir.

When the present invention is in use, select the location and adjust the slope of the fish pass 10 according to the situation on site, and then adjust the flow rate of the water supply pump 81 so that a thin layer of trickle suitable for eels to go up is produced in the fish pass 10. When passing fish during the day, cover the shading plate 50 and open the water diversion pipe 70 to generate the suction water flow; 70. Migratory young eels are stored in the fish basket collection device 40 through the fishway 10 .

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.

Claims (10)

1. a kind of removable ramp type eel road, it is characterised in that be included in crossing fish pass, connecting and prop up for vertical inclination setting The retractable support mechanism below the fish pass excessively is supportted, the climbing layer crossed in fish pass is arranged on and is arranged on the mistake The bamboo fish hamper collection device in the exit of fish pass；It is described to cross the fish pass open-ended formation import for crossing fish pass directed downwardly, upward Open-ended formation it is described cross fish pass outlet.

2. removable ramp type eel road according to claim 1, it is characterised in that described to cross between fish pass and horizontal plane Angle be 15-45 °.

3. removable ramp type eel road according to claim 1, it is characterised in that the retractable support mechanism includes can Retractable support cylinder and boom；The top connection of the retractable supports cylinder is described to cross fish pass, and the two ends of the boom connect respectively Connect the bottom for crossing fish pass and retractable supports cylinder.

4. removable ramp type eel road according to claim 1, it is characterised in that the climbing layer includes being laid on institute State the bed course on fish pass inner bottom surface, protrude the climbing structures being arranged on the bed course.

5. removable ramp type eel road according to claim 4, it is characterised in that the bed course is concrete layer, institute State climbing structures and be included in the multiple concrete projections or hair brush structure being spaced apart on the bed course.

6. removable ramp type eel road according to claim 1, it is characterised in that the bamboo fish hamper collection device includes top The collection vessel of portion's closing and the reverse back structure being arranged in the collection vessel；

The collection vessel is connected to the outlet for crossing fish pass and is connected with the fish pass of crossing；

The reverse back structure is included in eight shapes and the reverse back piece being connected on the collection vessel inwall.

7. the removable ramp type eel road according to claim any one of 1-6, it is characterised in that the removable slope Formula eel road also includes movable covering in the shadow shield crossed on fish pass.

8. the removable ramp type eel road according to claim any one of 1-6, it is characterised in that the removable slope Formula eel road also includes the fish-luring light being arranged at the import for crossing fish pass and provides the conduit pipe for attracting current；It is described to draw Waterpipe is located between the fish-luring light and the fish pass excessively.

9. removable ramp type eel road according to claim 8, it is characterised in that the incident angle of the fish-luring light with The angle of water (flow) direction is 45 °.

10. the removable ramp type eel road according to claim any one of 1-6, it is characterised in that described removable oblique Slope formula eel road also includes crossing the water supply installation that fish pass provides sheet flow for described；

The water supply installation includes water supply pump and water supply water pipe, and the water supply water pipe is connected to the outlet of the water supply pump Go up and extend in the bamboo fish hamper collection device.