JP2912937B2 - Fishways and fishway blocks - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fishway and a fishway block provided with fishway blocks arranged on an inclined surface.

[0002]

2. Description of the Related Art In a conventional fishway, a water channel having a U-shaped cross section is provided on an inclined surface, and a water control wall is alternately projected from a side wall of the water channel to form a zigzag water flow. In addition, waterway,
Finishing to a smooth surface and creating a smooth flow was recommended.

[0003]

In the above-mentioned fishway, since the surface of the waterway is also fast flowing, ayu, salmon,
It is suitable for trout and other fast-moving fish. However, there is a problem that creatures such as benthic fish and aquatic insects are pushed back to a fast current, or crabs and turtles cannot go up without claws on the smooth surface of the waterway.

[0004] The present invention has been made in view of the above circumstances, and has as its object the appearance can be adapted to the surrounding nature, the habitat of living organisms can be improved, and living organisms such as aquatic insects run upstream. To provide fishways and fishway blocks.

[0005]

According to a first aspect of the present invention, there is provided an apparatus for tilting an object.
In the fishway formed by arranging the fishway blocks in the open waterway , the water is softened on the surface of the block body (22).
A plurality of water control projections (32) are provided in a zigzag shape, and
The water control projection (32) protruding from the lock body (22)
It is characterized in that a fishway block having a plurality of concave portions (22d) for retaining water around the periphery is used .

The invention according to claim 2 is characterized in that the water control projection ( 3)
2) is characterized by being composed of natural stone.

According to a third aspect of the present invention, there is provided an air conditioner arranged in an inclined waterway.
Fishway block, made of concrete
Block body (22), and the block body (22)
Multiple zig-zag projections on the surface of the
In front of the water control projection (32) and the block body (22)
Water retention stagnation formed around the water control projection (32)
The feature is that a plurality of concave portions (22d) are provided.
I do.

[0008] The invention of claim 4 is the water control projection ( 3).
2) is characterized by being composed of natural stone.

According to a fifth aspect of the present invention, there is provided a fishway block arranged in an inclined waterway, wherein the block body (22) is formed of concrete and the block body (22).
Is disposed on the peripheral edge so as to surround the upstream side, the height of the protrusion on one side on the upstream side is small, and the height of the side is gradually increased as the side is separated from the side, and the other side on the downstream side facing the side is The highest natural stone (24) and these natural stones (2
4) and a water reservoir formed on the upper surface of the block body (22)
(25) is provided.

The invention according to claim 6 is characterized in that the bottom surface of the water storage section (25) is formed in a concave shape.

Claims7In the invention, the water storage section(25)
Is the outlet from which the water stored in the periphery flows out(28)
(43)The feature is provided where is provided.

According to an eighth aspect of the present invention, there is provided a fish according to the first aspect.
On the road, the block body (2
2) and the water control projections (32) are formed of concrete .

According to a ninth aspect of the present invention, the water control projection (4
7) is a U-shape or U-shape whose upstream side is open,
It is characterized in that a water reservoir (25) is formed inside.

According to a tenth aspect of the present invention, the water control projection (5
0) is characterized in that it is formed in a crank shape.

The invention according to claim 11 is the fishway block.
Has fine protrusions (23) on its surface,
It has features where it is formed .

The fishway according to the twelfth aspect of the present invention is the fishway of the eleventh aspect.
It is characterized by using blocks.

[0017]

FIG. 1 shows an embodiment of a fishway 10 according to the first to fifth aspects of the present invention. This fishway 10 is A
The block 20 for the fishway and the block 21 for the fishway B are arranged side by side. That make up the fishway 10 A type fishway block 20 (hereinafter referred to as A type block 20), the surface of the block body 22 formed of concrete, the surface concrete under pressure water or the like when the semi-cured concrete Is washed out, the aggregate is exposed, and a convex portion 23 of, for example, about 2 cm is protruded to form an uneven surface.

The method of forming the surface with irregularities is not limited to the above embodiment, but a method of casting concrete on a mold having an inner surface formed with irregularities, or a method of forming concrete on a semi-hardened state. A method of implanting natural stone, artificial stone, crushed stone, or the like may be used. The A-shaped block 20 may be provided with a natural stone 24 having a water control effect (effect of reducing water force).

A B-shaped fishway block 21 (hereinafter referred to as a "B-shaped block 21") shows a first embodiment of the B-shaped block according to claims 4 to 11 , which runs upstream in the middle of the fishway 10. It will be installed at an appropriate location to provide a resting place for the fish to catch. This is usually disposed between the A-shaped blocks 20, but a plurality of B-shaped blocks 21 may be provided adjacently, vertically and horizontally. This B-shaped block 2
1 is provided with a natural stone 24 acting as a water control projection on the surface of the block body 22, as shown in FIGS. The natural stone 24 is disposed on the periphery of the block main body 22 so as to surround the block main body 22. The height of the natural stone 24 is such that the height H1 of the one side 22a on the upstream side is low, and
H2 gradually increases as the distance from H2a increases, and the height H3 of one side 22b on the downstream side is the highest.

When the B-shaped block 21 is attached to the fishway 10, the upper surface of the natural stone 24 becomes substantially horizontal,
A water storage portion 25 for storing flowing water is formed in a portion surrounded by the natural stone 24 and the upper surface 22c of the block main body 22.

The surface of the B-shaped block 21 and the water storage section 2
The bottom surface of 5 is formed in an uneven shape like the A-shaped block 20.

FIG. 3 shows a first embodiment in which the B-shaped block 26 of the second embodiment according to claims 3 to 6 is applied to the fishway 10.
The difference between this embodiment and the B-type block 21 is that
The concave portion 22 is formed on the upper surface of the block body 22 corresponding to the bottom surface of the
d is formed. According to this second embodiment,
The depth of the water storage section 25 increases.

The B-type block 27 shown in FIG. 4 is a third embodiment. The difference from the B-type block 21 of the first embodiment is that the B-type block 27 Flowing water outlet 2 for flowing water from water storage section 25 downstream
8 is provided. According to the third embodiment, the water in the water storage section 25 is quickly circulated.

According to the fishway 10, the water flowing down from the upstream is reduced in water force by the natural stones 24 for water production and stored in the water storage section 25. The overflowing water flows down from between the natural stones 24 or through the water outlet 28 to the downstream side. The fish that has run up enters the temporary water storage section 25, where they can rest and then go up again, so that the fish can easily go up.

Further, since the surface of the fishway 10 is formed in an uneven shape, the water hits the convex portion 23 of the surface and the flow is weakened. In addition, since a shade portion is formed on the back side of the convex portion 23, organisms such as benthic fish and aquatic insects can also go up without being washed away by the water current, and further, crabs and turtles can be It is possible to go up as if crawling on the bottom of the fishway 10.

Since the water control projection is made of the natural stone 24, it is not necessary to use an expensive formwork and the cost can be reduced. In addition, the arrangement of the natural stones 24 can be freely selected without being limited by the shape frame, and since the shapes and the sizes are not the same, the appearance is varied and can be assimilated to the surrounding scenery. Furthermore, since it does not bleed on the surface, it can be adapted to the habitat of fish.

Moreover, since the natural stones 24 protrude around the water storage section 25, all portions of the fishway 10 are covered with natural stones, and have an effect of adapting to the surrounding scenery. It is.

Next, different embodiments of the B-shaped block will be described mainly with respect to differences from the above embodiment. FIG.
The B-shaped block 31 shown in FIG. 4 shows the fourth embodiment. The difference from the first embodiment is that a water control projection 32 made of a plurality of natural stones is formed on the surface of the block body 22 in a zigzag shape. It is protruding. According to the B-shaped block 31, the water flowing down collides with the water control projection 32 and stays around the water control projection 32, thereby forming a water storage portion in which fish can rest.

A B-shaped block 33 shown in FIG. 6 shows the fifth embodiment. The difference from the fourth embodiment is that a concave portion 22d is formed around the water control projection 32, for example, on the upstream side. Things. According to the fifth embodiment, since the depth of the water storage section 25 is increased, the fish can be easily rested.

A B-type block 41 shown in FIG. 7 shows a sixth embodiment, in which a water control projection 42 is formed into a C-shape with concrete, and an opening 42a is arranged on the upstream side. . As in the case of the surface of the block body 22, the water control protrusions 42 are formed by applying pressure water or the like when the concrete is semi-cured to wash out the concrete on the surface, exposing the aggregates, providing the convex portions 23, Are formed in an uneven shape. And the inside of the water control projection 42 is the water reservoir 25,
A water outlet 43 is formed at the edge of the water storage section 25.

A B-shaped block 44 shown in FIG. 8 shows a seventh embodiment. The difference from the sixth embodiment is that a part of the peripheral wall of the water control projection 42 is set to be concave and low. This is a flowing water port 45.

A B-shaped block 46 shown in FIG. 9 shows the eighth embodiment. The difference from the sixth embodiment is that a water control projection 47 is formed in a U-shape and an opening 47a is formed. It is arranged on the upstream side, and the inside of the water control projection 47 is the water storage portion 25.

A B-type block 48 shown in FIG. 10 shows a ninth embodiment. The difference from the eighth embodiment is that a concave portion 22d is formed on the upper surface of the block body 22 corresponding to the bottom surface of the water storage portion 25. Are formed.

The B-shaped block 49 shown in FIG.
In this embodiment, the water control protrusion 50 is formed in a crank shape, and the concave portion 2 is formed around the water control protrusion 50.
2d is formed. Also in the tenth embodiment, if the B-shaped blocks 49 are stacked one above the other, the water stagnates above and below the water control projection 50 to form a water storage portion.

Since the fourth to tenth embodiments of the B-shaped block are manufactured in a factory equipped with manufacturing equipment, the accuracy can be improved and the manufacturing can be performed at low cost. In addition, these are fishway 1
Even when it is applied to 0, the same effect as in the first embodiment can be obtained. Even when the water control projection is made of concrete, its surface is formed in an uneven shape, so that it can be blended into the surrounding natural scenery and does not give an artificial feeling.

[0036]

According to the fishway and the fishway block of the present invention, the fishway is manufactured by stacking the fishway blocks manufactured in the factory in many stages, so that the fishway can be manufactured at a low cost, the construction period can be shortened, and the fish resting place going upstream. Can be provided, and living organisms such as aquatic insects can also go upstream, and furthermore, have an excellent effect that the appearance can be adapted to the surrounding nature.

[Brief description of the drawings]

FIG. 1 is a longitudinal side view of a fishway.

FIG. 2 is a plan view of a first embodiment of a block for a B-shaped fishway.

FIG. 3 is a longitudinal sectional side view in which a second embodiment of a block for a B-shaped fishway is applied to a fishway.

FIGS. 4A and 4B show a third embodiment of a block for a B-shaped fishway, where FIG. 4A is a side view and FIG. 4B is a plan view.

5A and 5B show a fourth embodiment of a block for a B-shaped fishway, wherein FIG. 5A is a side view and FIG. 5B is a plan view.

6A and 6B show a fifth embodiment of a block for a B-shaped fishway, wherein FIG. 6A is a side view and FIG. 6B is a plan view.

FIGS. 7A and 7B show a sixth embodiment of a block for a B-shaped fishway, where FIG. 7A is a side view and FIG. 7B is a plan view.

8A and 8B show a seventh embodiment of a block for a B-shaped fishway, wherein FIG. 8A is a side view and FIG. 8B is a plan view.

9A and 9B show an eighth embodiment of a block for a B-shaped fishway, wherein FIG. 9A is a side view and FIG. 9B is a plan view.

10A and 10B show a ninth embodiment of a block for a B-shaped fishway, wherein FIG. 10A is a side view and FIG. 10B is a plan view.

11A and 11B show a tenth embodiment of a block for a B-shaped fishway, wherein FIG. 11A is a side view and FIG. 11B is a plan view.

[Explanation of symbols]

 Reference Signs List 10 fishway 20 A-shaped block (block for A-shaped fishway) 21 B-shaped block (block for B-shaped fishway) 22 block body 22d concave portion 23 convex portion 24 natural stone 25 water storage portion 26 B-shaped block 27 B-shaped block 28 31 B-type block 32 Water control projection 33 B-type block 41 B-type block 42 Water-control projection 43 Flowing water port 44 B-type block 45 Flowing water port 46 B-type block 47 Water-control projection 48 B-type block 49 B-type block 50 Water control projection

Claims (12)

(57) [Claims] Te [Claim 1] inclined fishway odor which is formed by arranging a fishway block waterways, projections for multiple <br/> water system to relieve the water force on the surface of the block body (22) and (32) in a zigzag shape Protruding and block book
Around the water control projection (32) projecting from the body (22)
With multiple concave portions (22d) for retaining water in the sea
Fishway characterized by the use of a block . 2. The fishway according to claim 1, wherein the water control projections ( 32) are made of natural stone. 3. A fishway block arranged in an inclined waterway.
And a block body (22) formed of concrete, and a zigzag shape projectingly provided on the surface of the block body (22).
A plurality of water control projections (32) for relieving water flow, and the water control projections (32) provided on the block body (22).
A plurality of concave portions (22) formed around the
d) a fishway block characterized by the following . 4. The fishway block according to claim 3, wherein the water control projections ( 32) are made of natural stone. 5. A fishway block arranged in an inclined waterway, comprising: a block body (22) made of concrete; and a peripheral part surrounding the block body (22). The natural stone (2) in which the protruding height of one side is small, and gradually increases as the distance from the side increases, and the other side on the downstream side facing the side is highest.
4) and a fishway block comprising: a natural stone (24); and a water storage portion (25) formed on the upper surface of the block body (22) . 6. The fishway block according to claim 5, wherein a bottom surface of the water storage section (25) is formed in a concave shape. 7. The fishway as claimed in claim 5, wherein the water storage portion (25) is provided with water outlets (28), (43) at the periphery thereof, from which the water stored flows out. block. 8. The fishway according to claim 1, wherein
The block body (22) of the fishway block and the spike
A fishway block characterized in that the starting point (32) is formed of concrete . 9. The water control projection (47) has a U-shape or a U-shape whose upstream side is open, and has a water storage portion (2
9. The fishway block according to claim 8, wherein 5) is formed. Wherein said water system projection (50), the fishway block according to claim 8, characterized in that it is formed in a crank shape. 11. The fishway block has a thin surface.
Kana convex portions (23) are arranged and formed in an uneven shape.
The method according to any one of claims 3 to 10, wherein
Fishway block as described. 12. The fishway block according to claim 11,
Fishway characterized by the use.