KR20090041373A - Nature friendly fish passage - Google Patents

Abstract

An environment-friendly fishway in which movement be facilitated is provided to make fishes move freely regardless of the number of fish. An environment-friendly fishway in which movement be facilitated comprises a submerged weir(10) and a fishway structure(40). Fish moving passages(11,41) which is inclined downwardly are formed in the submerged weir and fishway structure. The bottom part of each fish passage in the fishway structure is lower than the top. The fishes can move upwards through the passage in the state of being not exposed to outside.

Description

Nature friendly fish passages constructed to facilitate movement

The present invention relates to an environmentally friendly fishery that is configured to be easy to move, and more particularly, to preserve the ecosystem smoothly by allowing fish to freely travel between the upstream and downstream of the underwater beam in a safe state from catching birds or birds.

As is well known, the channel is equipped with movable beams such as submerged or automatic floodgates to control the low water upstream of the channel, taking into account the flood control function and the securement of agricultural water or the aesthetics upstream of the channel. When blocked, there is a disadvantage that the fish can not move between upstream and downstream based on the underwater beams or movable beams, so that the ecosystem is disconnected due to the underwater beams. Therefore, the underwater beams (1) constructed across the channel 3 as shown in FIG. Or on one side of the movable beam to form a fishery (2) so that the fish come and go between upstream and downstream based on the underwater beam (1) or the movable beam. In FIG. 1, an underwater beam 1 is installed in the waterway 3 as an example.

This fish 2 has an inclined structure, and in the middle, a flow rate reducing member 4 is usually provided to reduce the flow rate of the water flow.

However, this common fish can keep the water flowing continuously when the quantity is sufficient, but in the case of the dry season, the fish can not secure enough water to flow through the fish. There is a drawback of not being able to freely move between the upstream and downstream of the fish, and the fish distributed in the submarine or the downstream side of the movable beam were depleted of water and died.

In addition, when the fish are injured through a common fishery, inseparable fish have to be exposed to a low water level, and the fish are easily caught upstream through the fishery, or have a disadvantage of being fed by birds.

The present invention allows the fish to freely move between the upstream and downstream of the underwater beam, regardless of the quantity, so that the preservation of the ecosystem of the underwater stream can be preserved in a balanced manner, as well as outward when the fish travels between the upstream and downstream of the underwater beam. It is intended to provide an eco-friendly fish that is configured to facilitate movement so that it is not exposed and does not become a danger of capture or bird food.

In order to solve this problem, the present invention constructs a multi-stage fishery structure that gradually decreases in height toward the drainage side of the underwater beam, and inclined downward to the underwater beam and the fishery structure while the lower portion thereof is adjacent to the other fishery structure. By constructing a fish movement passage disposed at a lower position than the upper portion, the fish can freely move between the upstream and downstream of the underwater beam without being exposed to the outside of the water.

The present invention is configured so that the multi-stage fish structures on the drainage side of the underwater beam is gradually lowered toward the downstream, so that the water is in the state filled up to the upper end of each fish structure, and also the fish movement passage composed of each fish structure and the underwater beam Is inclined downward and its lower end is disposed at a lower position than the upper end of other adjacent structures below, so that fish can travel between upstream and downstream of the underwater beam through the fish movement passage without being exposed to the water.

In addition, since the fish passage has a zigzag shape in the plane, the water pressure of the water flowing through the fish passage becomes suitable for small fish so that the fish can move freely through the fish passage. Or, because it is located in the middle of the fish structure, even though the quantity is small, water can flow through the fish passage so that there is no risk of the fish dying, and the fish moves up and down the underwater beams in the water all the time. Therefore, there is an advantage of minimizing the chance of being caught or fed by birds.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view of a river in which the fishery according to the present invention is installed, FIG. 3 is a perspective view of the fishery according to the present invention, FIG. 4 is a cross-sectional view of the fishery according to the present invention, and FIG.

As shown, the present invention constructs the underwater beam 10 across the waterway 30, and the fish 20 on one side of the underwater beam 10 so that fish can travel between upstream and downstream of the underwater beam 10. It relates to an environmentally friendly fishery configured to facilitate the movement to form.

In the method of constructing the fishery, each of the stages of the fishery structure 40, which is lower than the height of the underwater beams 10 and gradually lowers toward the downstream, is constructed at a predetermined interval on the drainage side based on the underwater beams 10, respectively. Underwater beams 10 and each fish structure 40 are formed with fish movement passages 11 and 41 inclined downward, respectively, and the lower ends of each fish movement passages 11 and 41 are adjacent to the lower portion. It is configured to be disposed at a lower position than the upper end of the structure 40 so that the fish can be burned upward through the fish movement passages 11 and 41 in a state where the fish is not exposed to the outside of the water.

At this time, each of the fish moving passage (11) (41) is configured in a zigzag shape in the plane to reduce the water pressure in the fish moving passage (11) (41) to a suitable water pressure for the fish to burn out the fish of the underwater beam (10) It can be configured to move up and down freely.

That is, the fish moving passages 11 and 41 formed in the underwater beam 10 and the fish structure 40 form fish.

In this configuration, the water flows into the reservoir through the fish moving passage 11 formed in the underwater beam 10 by the underwater beam 10, and the water flows downstream, and the water is lowered to the upper end of the adjacent fish structure 40. The water flows downstream through the fish movement passage 41 formed in the fishery structure 40 in a stepwise manner.

At this time, the fish moving passage (11) (41) formed in the underwater beam (10) or the fish structure (40) is formed to be inclined downward in a planar zigzag shape to move through the fish movement passage (11) (41) The water pressure can be reduced to a suitable level for the fish to move so that the fish can be freely made.

In addition, since the lower end of the fish flow passage (11) (41) is located at a lower position than the upper end of the other adjoining structure 40 adjacent to the bottom, the small phase can be made to the top in the state that the fish is not exposed to the outside of the water.

Thus, when fish are upstream or downstream, the probability of being caught or feeding on algae is minimized.

In addition, since the fish passage 11, 41 according to the present invention is located in the middle of the underwater beam 10 or the fish structure 40, even if the water does not rise to the top of the underwater beam 10 or the fish structure 40. Water can flow through the fish flow passage (11) (41) is to prevent the phenomenon that the fish are isolated and dead in the dry season.

In addition, it is possible to maintain the proper level at all times through the underwater beam 10, there is an advantage to prevent flooding as well as securing water.

And, although not shown in the drawings, each fish movement passage (11) (41) is provided with a small fine help member made of a string so that the fish can be easily burned while relying on such a small help aid member Modified embodiments are naturally within the scope of the present invention.

In addition, the fish structure 40 according to the present invention is preferably provided on one side of the underwater beam 10, but in some cases the fish structure 40 may be constructed over the full width of the shear surface of the river, such a modified It is a matter of course that all of the embodiments fall within the scope of the present invention.

1 is a perspective view of a river installed with a common fish.

Figure 2 is a perspective view of the river installed in accordance with the present invention.

3 is a perspective view of the fisherman in accordance with the present invention.

4 is a cross-sectional view of the fisherman in accordance with the present invention.

5 is a cross-sectional view taken along the line A-A of FIG.

*** Explanation of symbols for the main parts of the drawing ***

10: underwater walk 11,41: fish passage

20: degree 30: waterway

40: Adobe Structure

Claims (1)

Construct the underwater beam 10 across the waterway 30, and form an airway 20 on one side of the underwater beam 10 so that fish can travel between upstream and downstream of the underwater beam 10, but one side of the underwater beam 10 On the drain side, the multi-stage fish structures 40, which are lower than the height of the underwater beams 10 and gradually lower toward the downstream, are respectively constructed to be spaced apart at regular intervals, and the underwater beams 10 and the respective fish structures 40 There is formed a fish movement passage (11) (41) of the downwardly inclined shape, respectively, wherein the lower end of each fish movement passage (11) (41) is lower than the upper end of the other fish structures 40 adjacent to the lower portion It is configured to be disposed in the so that the fish can be injured upwards through the fish flow passage (11, 41) in the state that the fish is not exposed to the outside of the water, each of the fish movement passage (11, 41) is planar Composed in a zigzag shape Easy to move, characterized in that to reduce the water pressure in the fish flow passage (11, 41) to a water pressure that can be wound by the fish so that the fish can freely move upstream and downstream of the underwater beam (10) Eco-friendly fishery configured to.

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