JP2001103862A - Artificial fish reef - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an artificial fish reef having the function of a fish reef to generate an upswelling flow as well as the function of a rock-filled fish reef, enabling the stacking of the reefs as necessary and less liable to cause the catch of fishing net, rope, etc., in operation with the fish reef thrown into the sea. SOLUTION: This artificial fish reef is provided with blocks 12-15 having a steric lattice form and mainly made of concrete or steel-reinforced concrete and a metallic connecting member 16 to connect the outer sides of adjacent blocks 12-15. The block has a protruded upswelling flow generation member 11 placed above the center of the reef to generate an upswelling flow, having a cross-form by top view and gradually elevating from the circumference to the center part and rectangular rock-filled parts 17-20 placed on every side of the generation member 11 opposite to each other, having a rectangular ground 31 at the bottom, supported by vertical post 34 and inclined post 35 erected in and out of the ground and having a rectangular form by top view.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial reef (fishing reef) mainly composed of a block made of concrete or reinforced concrete, and partially using a metal member.

[0002]

2. Description of the Related Art Artificial fish reefs have been created by utilizing the nature of fish gathering around fish reefs, and efficient fishing has been practiced for a long time, such as sinking abandoned ships, rocks, rings, buses and trains. Of old vehicles were used as fish reefs. However, such a reef is not an optimal reef for fish inhabitation, and therefore, an artificial reef made of a concrete block or a steel artificial reef (for example, Japanese Patent Laid-Open No. 10-19182).
No. 6) has been proposed. This artificial steel reef made of steel uses steel materials for columns, beams and the like as a whole, and has a masonry portion at the upper four corners of a square shape.

[0003]

Heretofore, there has been a case where the stone material is buried due to the escape of the stone material due to the bottom laminar flow or the movement of the sand and mud, and the function as a settling substrate and a breeding reef is reduced. Further, a steel artificial reef as described in Japanese Patent Application Laid-Open No. 10-191826 has a prismatic shape as a whole. There was a problem such as getting caught in the artificial reef where the rope and the rope were thrown. The present invention has been made in view of such circumstances, and exhibits both functions of a fish reef and a stone-filled fish reef that generates upwelling currents, while partially using metal members, as necessary. Stacking is also possible,
The purpose is to provide an artificial reef where fishing nets and ropes are not easily caught after being put on the seabed.

[0004]

The artificial reef according to the present invention, which meets the above-mentioned object, is made of a metal member, and is disposed at the upper center to generate an upwelling flow. Is a mountain-shaped upwelling flow generating member that is gradually higher than the surroundings, and is fixedly arranged facing the four sides around the upwelling flow generating member, and the bottom is a rectangular base having four sides. Having a rectangular masonry portion in plan view supported by vertical and inclined pillar portions erected inside and outside thereof, respectively, and a three-dimensional lattice-shaped block body mainly made of concrete or reinforced concrete; And a metal connecting member for connecting the side and outside of the block body.

[0005] This artificial reef is mainly composed of a block of four concrete (including reinforced concrete), uses a metal member (eg, steel) as an auxiliary member, and generates an upwelling flow. Complex parts such as members and connecting members are efficiently formed. In addition, the upwelling flow generating member has a mountain shape, and the block body provided therearound is also inclined with the side surface thereof being supported by the inclined column portion, and further, the adjacent block bodies are connected. The connecting member is also inclined. Therefore, since the entire area has a mountain shape with a raised center, there is little catch of a fishing net or the like. The upwelling flow generating member projecting upward at the center is provided at the upper center of the whole, and the lower part is a space, so that a plurality of artificial fish reefs can be stacked.

Here, in the artificial reef of the present invention, the upwelling flow generating member is extended outwardly to a connection portion of the four block members, and is fixed by a screw connecting the adjacent block members. Although preferred, other fixing means may be used. Thus, the upwelling flow generating member made of a metal member can be reliably fixed to the block body. Further, in the artificial reef of the present invention, it is preferable to provide a lattice bottom made of a metal member at the bottom of the masonry portion. In this way, a masonry portion having a sufficient strength at the bottom and a suitable gap with good tidal flow can be formed by harmonizing the concrete or reinforced concrete with the metal member.

In the artificial reef of the present invention, the connecting member includes an upper beam connecting the upper portions of the adjacent blocks and an upper beam connecting the outer portions of the lower portions of the adjacent blocks. It is preferable to have a lower beam having a long length and an oblique member connecting an intermediate portion between the upper beam and the lower beam.
Thereby, the strength of the connecting member can be improved, and a new reef space is formed below the connecting member by the connecting member. The masonry portion of the artificial reef of the present invention, by shelving from the seabed and storing the stone material by a member, does not cause a decrease in the function of the masonry portion due to movement and accumulation of sand and mud, By arranging the upwelling flow generating member, an upwelling current and a vortex are generated to supply oxygen to the masonry portion and to have an effective structure for plankton and spore formation of seaweed. Further, a shaded space is formed below the masonry area as a habitat, hideout, and resting place for fish and shellfish. Considering the amount of stone and its effect, the stone in the masonry section was designed to be effective with a small amount of use.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a perspective view of the artificial reef according to one embodiment of the present invention, FIG. 2 is a plan view of the artificial reef, FIG. 3 is a front view of the artificial reef, and FIGS. 4 (A) to 4 (C). Is a front view, a plan view, and a side view of a block body of the artificial reef, FIG. 5 is a plan view of an upwelling member of the artificial reef, and FIG. 6 is an assembled state of an upwelling member of the artificial reef. Front view,
7 is a plan view of a lattice bottom of the artificial reef, FIG. 8 is a front view of a lattice bottom of the artificial reef, FIG. 9 is a front view of a connecting member of the artificial reef, and FIG. 10 is a plan view of a connecting member of the artificial reef. FIG.

As shown in FIGS. 1 to 3, an artificial reef 10 according to an embodiment of the present invention has a spring generating member 11 disposed at a central portion and four directions of a spring generating member 11. Four three-dimensional lattice-shaped blocks 12 to 15 made of concrete (including reinforced concrete) arranged on the outside, and a connecting member 1 for connecting the sides and outsides of the adjacent blocks 12 to 15
6 and a large number of natural stones 21 arranged on masonry portions 17 to 20 formed above the block bodies 12 to 15. Hereinafter, these will be described in detail. As shown in FIG. 1 to FIG. 3, FIG. 5 and FIG.
Has four blade plate portions 23 formed of an iron plate having a thickness of about 6 to 12 mm and formed in a cross shape in a plan view, and the central portion (that is, the intersection portion) is formed of four isosceles angle irons. Are welded. Each blade plate portion 23 constituting the upwelling flow generating member 11 has a parallelogram shape, and the upper side 25 and the lower side 26 have an inclination angle θ of about 30 to 60 degrees with respect to the middle side 27. These four blades 2
By combining the three, the upwelling flow generating member 11 having a mountain shape in which the central portion is gradually higher than the peripheral portion is formed. A mounting plate portion 28 extending outward is formed around the upwelling flow generating member 11, and mounting holes 29 and 30 are formed in this portion.

The concrete block 12 (also 13 to 15) fixedly arranged in four opposing directions with the upwelling flow generating member 11 as a center is shown in FIGS.
As shown in (C), a rectangular base portion 31 having four sides serving as a base (bottom portion) and a masonry portion 17 disposed above the base portion 31 are provided.
(18-20) Upper frame 33 of a rectangular shape in plan view
And a vertical column portion 34 and an inclined column portion 35 for connecting and supporting these from inside and outside. The member 31a on the front side of the rectangular base portion 31 has a height compared to the other members, so that the concrete surface 31b on the back side is a shielding surface for fish such as juvenile larvae to escape from harmful species, and formed therefrom. A good hiding place is also provided by the shadows that are cast. The width of the upper frame 33 is the same as the width of the rectangular base 31, but the width of the upper frame 33 in the vertical direction (radial direction) is smaller than the width of the rectangular base 31 in the vertical direction. I have. Therefore, the side surface having the inclined column portion 35 extends from the lower rectangular base portion 31 to the upper masonry portion 17 and forms an inclined surface of about 30 to 50 degrees with respect to the vertical plane. The left and right vertical column portions 34 have diagonal vertical wall surfaces 36, and the through holes 3
7, 38 are provided respectively. Diagonal vertical wall 36
Is substantially the same as the width of the mounting plate 28 of the upwelling flow generating member 11 described above, and the positions and diameters of the mounting holes 29 and 30 correspond to the through holes 37 and 38. Further, through holes 41 and 42 are provided in the longitudinal members 39 and 40 inside and outside of the upper frame portion 33 so as to penetrate vertically, respectively. Nuts 35a and 35b (or through holes) are provided.

As shown in FIG. 2, the masonry portion 17 comprises a surrounding upper frame portion 33 and a bottom lattice bottom 43.
As shown in FIGS. 7 and 8, the lattice bottom 43 has flat steels 44 and 45 arranged at predetermined intervals in the vertical and horizontal directions, and angle steels 47 and 48 provided in the middle position in the vertical direction. Are welded to form an integral structure. The angle irons 47 and 48 are provided with through holes 49 and 50, respectively, and these through holes 49 and 49 and the through holes 50 and 50 are
3, the lattice bottom 43 is fixed to the bottom of the upper frame 33 by bolts and nuts (not shown) penetrating vertically.

As shown in FIG. 1 to FIG. 3, the block members 12 to 15 assembled in four directions are adjacent to the block members 12 to 15.
Are connected by a connecting member 16. This connecting member 16 is shown in FIG. 9 and FIG. 10, and has an upper beam member 51 and a lower beam member 52 made of upper and lower angle irons, and an oblique member 53 made of a channel steel connecting these intermediate parts. I have. The lower beam 52 is longer than the upper beam 51, and mounting plates 54, 55 are provided diagonally on both ends of the upper beam 51 and the lower beam 52, respectively.
Are provided on the mounting plates 54 and 55.
15 are provided with through holes 56 and 57 through which bolts screwed to the embedded long nuts 35a and 35b are inserted. Therefore, the crossing angle between the left and right mounting plates 54 and 55 is 90 degrees.

Next, a method for manufacturing and assembling the artificial reef 10 will be described. Four blocks 12 ~
15, the upwelling flow generating member 11, the four grid bottoms 43, and the four connecting members 16 are manufactured in advance on land (at a factory). Then, these are assembled in the yard beside the coast. First, as shown in FIG. 2, the four block bodies 12 to 15 are arranged so that the vertical pillar portions 34 of the adjacent block bodies 12 to 15 face each other. Deploy. Each block body 12-1
5 between the vertical column portions 34 from above.
A gap is provided in which the mounting plate 28 is fitted. In this state, the upwelling flow generating member 11 is lowered to the upper center, and the mounting plate portion 28 is fitted into the gap (that is, the connecting portion) between the vertical columns 34 of the blocks 12 to 15. The positions of the mounting holes 29 and 30 formed in the mounting plate portion 28 and the positions of the through holes 37 and 38 formed in the vertical column portion 34 are matched with each other,
A long bolt (not shown) is passed through the vertical column portion 34 of the adjacent block bodies 12 to 15, and a nut is screwed into the nut to fix it. As a result, the four blocks 12 to 15 are connected, and the upwelling flow generating member 11 is assembled on the upper center of the blocks 12 to 15.

The connecting members 16 connect the outer sides (upper and lower) of the adjacent blocks 12 to 15 as shown in FIGS. For this connection, bolts are inserted through through holes 56 and 57 formed in the upper and lower mounting plates 54 and 55 of the connecting member 16, and the inclined column portions 3 of the block bodies 12 to 15 are connected.
5 by screwing into the embedded long nuts 35a and 35b. As a result, a reef space serving as a habitat for fish is formed in a portion outside the sides of the adjacent block bodies 12 to 15. Thereafter, the lattice bottom 43 is attached to the bottom surface of the upper frame 33 of each of the blocks 12 to 15. The attachment of the lattice bottom 43 is performed by fitting the through holes 41, 4
This is performed by inserting a bolt (not shown) into the through holes 49 and 50 of the grid bottom 43 and the lattice bottom 43 and screwing a nut to the end. As a result, the masonry portions 17 to 20 are formed in each of the block bodies 12 to 15, respectively. As a result, the artificial reef 10 is completed, and is conveyed to a predetermined place by a boat, suspended by a crane and lowered to a predetermined seabed.

The artificial reef 10 on the seabed is a block 12
Since the periphery of 〜15 is formed diagonally upward in the center by the inclined column portion 35, and the upwelling flow generating member 11 is formed in a mountain shape as a whole, it becomes a mountain shape as a whole, and the fishing net and ropes in operation are formed. Etc. are not caught. Since a space is formed in each of the blocks 12 to 15, a space surrounded by the blocks 12 to 15 exists, and the upwelling flow generating member 11 is further provided thereon. The upwelling current occurs in this part, and a better environment can be formed for fish. Upwelling member 1
Although 1 protrudes from the block bodies 12 to 15, each blade plate portion 23 has a parallelogram shape, so that the upper part of the upwelling flow generating member 11 can be fitted below the upwelling flow generating member 11. A space is formed, whereby a plurality of artificial reefs 10 can be stacked as shown in FIG. As a result, since the artificial reefs 10 can be stacked on the ship, the number of voyages of transportation by the ship to the installation location of the artificial reefs 10 can be reduced.

Although the embodiment of the present invention has been specifically described above, the present invention is not limited to this embodiment, and changes can be made without departing from the gist of the present invention. It is. For example, in this embodiment,
The connecting member 16 has bolts embedded therein and long nuts 35a, 35a.
Although fixed to the block bodies 12 to 15 by b, it is also possible to form a through hole in the inclined column 35 and fix it directly with bolts and nuts. Further, the shape of the connecting member is not limited to this embodiment, but may be formed by other constituent members. In the above-described embodiment, a steel material is used as the metal member. However, a stainless steel material or the like may be used to further extend the life.

[0017]

According to the artificial reefs of the first to fourth aspects of the present invention, each of the artificial reefs is mainly composed of a block body made of concrete or reinforced concrete having a masonry portion, and a combination of a spring generating member at the center. It is possible to provide an artificial fish reef that can secure a more effective fish reef space and an upwelling flow generation space. There is an inclined column on the outer surface of the block body in the combined state, and the upwelling flow generating member projecting at the top of the block body has a mountain shape, so the entire artificial fish reef has a mountain shape, Fishing nets and ropes are difficult to catch. Furthermore, since there is a space below the upwelling flow generating member at the upper center, in which the upper part of the upwelling flow generating member of the same shape fits, a plurality of artificial reefs can be stacked.
Thereby, the storage space and the mounting space on the ship can be reduced. In this way, in artificial reefs, the mountain-shaped upwelling flow generating member, which is cross-shaped in plan view and whose central part is gradually higher than its surroundings, is excellent in controlling the flow field, and removes nutrient salts in the bottom layer. By generating the upwelling current that rises further upward or by increasing the resistance surface of the tidal current from the height of the masonry, the water mass that becomes the upwelling increases, and the masonry part ahead of the upwelling flow generating member As the ascending flow passes, it promotes plankton and seaweed spore formation on the stone and oxygen supply. At this time, with respect to the masonry portion on both sides of the upwelling flow generating member and the back, since the upwelling flow generating member has a mountain shape, the tidal current can easily flow around,
The epidermal function is not inhibited. In addition, since the masonry portion is arranged in front of the upwelling flow generating member from any angle in the horizontal direction, the effect of the upwelling flow generating member on the masonry portion depends on the direction in which the tidal current enters. Absent. Further, increasing the resistance surface of the tidal current can form a swirl zone and a stagnant zone for transporting nutrients more widely in the wake area behind the fish reef, and can promote the effect of collecting fish accompanying plankton propagation. In particular, in the artificial reef according to claim 2, the upwelling flow generating member is extended to the connecting portion of the four blocks, and the four outermost of the upwelling generating member are the connecting portions of the block, together with the block. Since it is fixed by screws, assembly of the block body and the upwelling flow generating member can be performed by relatively simple work. In the artificial reef according to the third aspect, since the metal lattice bottom is provided at the bottom of the masonry portion, an appropriate gap can be formed at the bottom to form the masonry portion. Or a downward flow,
By securing internal oxygen, the habitat of algae and fish can be secured. In the artificial reef according to the fourth aspect, adjacent blocks are connected by an upper beam and a lower beam longer than the upper beam, and further, the upper beam and the lower beam are connected by an oblique member. Because
A fish reef space can be formed on the side of the adjacent block while maintaining the oblique state of the side of the artificial reef.

[Brief description of the drawings]

FIG. 1 is a perspective view of an artificial reef according to an embodiment of the present invention.

FIG. 2 is a plan view of the artificial reef.

FIG. 3 is an explanatory diagram in a case where the artificial reefs are overlaid.

FIGS. 4A to 4C are a front view, a plan view, and a side view of a block body of the artificial reef, respectively.

FIG. 5 is a plan view of an upwelling member of the artificial fish reef.

FIG. 6 is a front view of an upwelling member of the artificial fish reef.

FIG. 7 is a plan view of a lattice bottom of the artificial reef.

FIG. 8 is a front view of the lattice bottom of the artificial reef.

FIG. 9 is a front view of a connecting member of the artificial reef.

FIG. 10 is a plan view of a connecting member of the artificial reef.

[Explanation of symbols]

10: Artificial fish reef, 11: Upwelling material, 12-15:
Block body, 16: connecting member, 17-20: masonry part, 2
1: natural stone, 23: blade plate part, 24: reinforcing material, 25: upper side, 26: lower side, 27: middle side, 28: mounting plate part, 2
9, 30: mounting hole, 31: rectangular base, 31a: member, 31b: concrete surface, 33: upper frame, 34: vertical column, 35: inclined column, 35a, 35b: embedded long nut, 36: Oblique vertical wall surface, 37, 38: through hole, 3
9, 40: elongated material, 41, 42: through hole, 43: lattice bottom, 44, 45: flat steel, 47, 48: angle iron, 49, 5
0: Through hole, 51: Upper beam material, 52: Lower beam material, 53: Diagonal material, 54, 55: Mounting plate, 56, 57: Through hole

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Katsuhiko Hisamura 153 Higashi Fukagawa, Nagato-shi, Yamaguchi 4th house, Prefectural Housing, No. 301 (72) Inventor Akihiro Suenaga 889, Nagato-shi, Yamaguchi, Japan 889 (72) Inventor Keiji Kimikawa F-term (reference) 5-4-18 Nagao, Kokura-minami-ku, Kitakyushu-shi, Fukuoka 2B003 AA01 BB03 BB08 CC01 DD01 DD02 EE04

Claims (4)

[Claims] 1. A mountain-shaped upwelling flow generating member which is made of a metal member and is arranged at an upper central portion to generate an upwelling flow, is cross-shaped in plan view, and has a central portion gradually higher than the surroundings. A vertical base portion and a slanted column portion which are fixedly arranged facing the four sides of the upwelling flow generating member so as to be opposed to each other, and have a bottom portion as a rectangular base portion having four sides, and standing up and down inside and outside thereof, respectively. Having a rectangular masonry portion in plan view supported by
An artificial fish reef comprising: a three-dimensional lattice-like block body mainly made of concrete or reinforced concrete; and a metal connecting member for connecting the side and outside of the adjacent block body. 2. The artificial reef according to claim 1, wherein said upwelling flow generating member is extended outward to a connecting portion of said four block bodies, and is fixed by screws connecting said adjacent block bodies. Artificial reef, 3. The artificial fish reef according to claim 1, wherein a lattice bottom made of a metal member is provided at a bottom of said masonry portion. 4. The artificial reef according to claim 1, wherein the connecting member includes an upper beam connecting an upper portion of the adjacent block and a lower portion of the adjacent block. An artificial reef having a lower beam member connected to the outside and having a longer length than the upper beam member, and an oblique member connecting an intermediate portion between the upper beam member and the lower beam member.