JP2527140B2 - Fish reef - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish reef for breeding seaweeds such as kelp and marine organisms such as abalone and shellfish.

[0002]

2. Description of the Related Art Generally, in the coastal waters where marine organisms such as kelp, abalone and turban shells are harvested, various fish reefs are used to breed in order to improve the efficiency of breeding of these marine organisms. I try to improve the environment.

Conventionally, as this type of fish reef, for example, as shown in FIG. 5, a concrete base 1 installed on the seabed has a wooden base on which a space 2 is formed in the center. It is known that a pillar 4 is formed by arranging a plurality of columns 3 made of steel in an upright shape in a rectangular shape, and a space 5 formed by the fence 4 is filled with a stone 5 (for example, an actual flat plate 5). -702
No. 65 publication).

In this fish reef, since wood and stones 5 are used as compared with a concrete-only fish reef, there are many voids, so spores of kelp, eggs of shellfish, juveniles, etc. "Kindergarten") is easy to settle, and the harvest efficiency is high.

[0005]

By the way, in the above-mentioned conventional fish reef, since the fence 4 is formed by erecting the wooden support columns 3, it is easy to receive the resistance of the wave and falls due to this wave. In that case, there is a problem that marine organisms may leave the fish reef, which does not necessarily lead to securing or increasing the biomass. Further, the daylighting property is not always sufficient, and in this respect, there is a problem that the reproductive efficiency of marine organisms is insufficient.

[0006] Therefore, an object of the present invention is to provide a fish reef that is resistant to falling even when subjected to the resistance of waves and has improved daylighting properties to improve the survival rate and reproduction efficiency of marine organisms. is there. And if necessary, prevent stones from falling,
Another issue was how to improve the strength of the fence.

[0007]

The technical means of the present invention for solving such a problem is to provide a concrete base installed on the seabed so that a space is formed in the center thereof. In the fish reef with a stone filled in the space formed by the fence,
The pillars are tilted so that the fence is formed in a truncated cone shape, and are erected on the base.

[0008] It is effective that the above-mentioned fence is erected on one or a plurality of large-diameter columns and small-diameter columns alternately on the base.

Further, it is effective to wind a rope on the outside of the fence and fix the rope to the pillar of the fence.

Then, if necessary, the concrete base is provided with a convex portion protruding in the horizontal direction and a concave portion with which the convex portion of another fish reef adjacent thereto can be engaged.

[0011]

[Function] According to the fish reef having such a structure, the larvae of marine organisms are attached to the fence or the stone material and installed in the sea. In this state, since wood and stone are used,
Since there are many voids, spores of kelp, eggs of shellfish, and juveniles of marine organisms such as juveniles are easy to settle, and since stones are protected by fences, they are less susceptible to external enemies.

Further, since the fence is formed in the shape of a truncated cone, it is difficult to receive the resistance of the waves, and therefore it is extremely difficult to fall down, and it is possible to prevent the underwater creatures from leaving the fish reef by falling down. The reduction of the survival rate of marine organisms is prevented. In addition, since the fence is inclined, it is easy to receive sunlight and the daylighting property is improved, so that the breeding efficiency of marine organisms is improved.

If one or a plurality of large-diameter columns and small-diameter columns are alternately installed on the base, the small-diameter columns will block the large-diameter columns. ,
Due to the inclination, it becomes difficult for a large gap to be formed between the columns, which prevents the stone material from spilling out from the gap between the columns.

Further, when the rope is wound around the fence and the rope is fixed to the pillar of the fence, even if the pillar is spread by a heavy stone material, the rope should be pressed by the rope. You can

Further, when the concrete base is provided with a convex portion protruding in the horizontal direction and a concave portion with which a convex portion of another adjacent fish reef can be engaged, the convex portion and the concave portion are engaged with each other. If multiple fish reefs are installed, it is possible to regulate each other even if the fish reefs are moved due to waves or the like, so it is possible to prevent situations in which the fish reefs collapse and marine organisms are separated from the fish reefs.
The reduction of the survival rate of marine organisms is prevented.

[0016]

The fish reef according to the embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a perspective view showing a fish reef according to an embodiment, and FIG. 2 is a vertical sectional view thereof. The same components as those described above will be designated by the same reference numerals.

In the fish reef G shown in the figure, 1 is a concrete base installed on the seabed, and a convex portion 10 projecting forward in the horizontal direction is engaged with a convex portion 10 of another adjacent fish reef G. And a concave portion 11 which can be formed. Reference numeral 12 is a reinforcing bar embedded in the base 1, and 13 is a carrying hook for lifting by a crane.

Reference numeral 4 denotes a fence, which is a concrete base 1.
Further, a plurality of columns 3 made of wood and having a circular cross section are provided in a row on the base 1 so that a space 2 is formed in the center. The pillar 3 is
The fence 4 is tilted so as to be formed in a truncated cone shape (conical trapezoidal shape in the embodiment), and the base end portion is buried so that the fence 4 is erected on the base 1. The height of the pillar 3 is, for example,
It is about 1.8 m.

Further, the large-diameter column 3 and the small-diameter column 3 are combined into one.
Alternatively, a plurality of them are alternately installed upright on the base 1. In the embodiment, a large-diameter column 3 (for example, a diameter of 180 to 210 m) is used.
m) and a small-diameter column 3 (for example, a diameter of 120 to 150 m)
m) Two pieces are erected on the base 1 alternately.

Further, the pillars 3 of the fence 4 are connected to each other by the cords 15 made of a reinforcing bar. Specifically, the rope 15 is wound around each of the columns 3 of the fence 4, and the rope 15 is
Is fixed to the column 3 by a U-shaped nail or the like.

The space 5 formed by the fence 4 is filled with stone material 5. As the stone material 5, for example, granite having a maximum width of about 100 to 250 mm is used. The weight of the stone material 5 is, for example, about 12 tons.

Therefore, when the fish reef G according to this embodiment is installed in the sea, a concrete base 1 provided with a fence 4 in advance is lifted by a crane or the like and placed in the sea, and then the stone 5 is put. The space 2 formed by the fence 4 is filled.
In this case, the fence 4 has a large-diameter support post 3 and a small-diameter support post 3
Alternatively, since a plurality of pieces are alternately erected on the base 1, it is difficult to form a large gap, so that the stone 5 is prevented from spilling out from the gap of the pillar 3. Further, since the support columns 3 are bound by the ropes 15, even if the support columns 3 are spread out by the heavy stone material 5, the support columns 3 are pressed and become strong in strength. In addition, at the time of installation, as shown in FIGS. 3 and 4, a large number of fish reefs G are continuously arranged, and the convex portions 10 and the concave portions 11 of the adjacent bases 1 are rubble 16
To engage via.

In the fish reef G installed in the sea, since wood and stones 5 are used, there are many voids. Therefore, spores of kelp, eggs of shellfish, juveniles of marine organisms such as juveniles are preliminarily attached. Can be easily settled, and since the stones 5 are protected by the fence 4, they are less likely to be affected by external enemies, and the survival rate is improved and the harvesting efficiency is improved accordingly.

Further, even if a wave is received in the sea, since the fence 4 is formed in the shape of a truncated cone, the wave easily escapes, and the resistance of the wave is hard to be received, so that the wave does not easily fall down. Therefore, it is prevented that the marine organisms leave the fish reef G due to the fall, and the reduction of the survival rate of the marine organisms is prevented. Moreover, the convex portion 1 of the base 1 of the adjacent fish reef G
Since 0 and the concave portion 11 are engaged with each other, the fish reef G can be restrained from each other even if the fish reef G is moved due to waves or the like, which makes it difficult for the fish reef G to fall. The situation such as separation from the fish reef G is prevented, and the survival rate is improved accordingly.

Furthermore, since the fence 4 is formed in a truncated cone shape, it is easy to receive sunlight and the lighting performance is improved.
In this respect, the reproductive efficiency of young children is improved, and the harvest efficiency is improved accordingly.

[0026] For example, in the case of kelp, the spores of kelp are harvested about two years after they have settled. In addition, for example, even in shellfish such as abalone and turban shell, eggs and juveniles are settled and then grown, and then harvested in a timely manner.

In the above embodiment, the frustum shape of the fence 4 is not limited to the above-mentioned truncated cone, but may be various truncated cone shapes such as a quadrangular pyramid and a hexagonal pyramid. Also, the pillar 3 of the fence 4
The number of columns and the method of assembling the columns 3 are not limited to those described above, and may be changed as appropriate.

[0028]

As described above, according to the fish reef of the present invention, the pillars are tilted so that the fence is formed in the shape of a frustum and are erected on the base. It becomes difficult to receive the resistance of, and it becomes very difficult to fall. Therefore, it is possible to prevent the marine organisms from leaving the fish reef due to the fall, and it is possible to prevent the marine organisms from decreasing their survival rate and breed them reliably.

Further, since the fence is inclined, it becomes easy to receive sunlight, and the lighting performance can be improved. Therefore, there is an effect that the breeding efficiency of marine organisms can be improved as compared with the conventional case, and the harvesting efficiency can be improved accordingly.

Further, when one or a plurality of large-diameter pillars and small-diameter pillars are alternately erected on the base of the fence, the large-diameter pillars are erected even if the pillars are erected upright. Since the small-diameter pillars close the gaps, it is difficult to create large gaps between the pillars, which can prevent stones from spilling out from the pillar gaps. In this respect as well, the survival rate of marine organisms is high. It is possible to prevent a decrease in the number of seeds and ensure reliable breeding.

When a rope is wound around the outside of the fence and the rope is fixed to the pillar of the fence, even if the pillar is spread by a heavy stone material, the rope should be pressed by the rope. It is possible to make it stronger and stronger.

Furthermore, in the case where the concrete base is provided with a convex portion projecting in the horizontal direction and a concave portion with which the convex portion of another adjacent fish reef can be engaged, the convex portion and the concave portion are formed. When multiple fish reefs are installed by engaging with each other, they can regulate each other even if the fish reefs are moved due to waves etc., so it is possible to prevent situations such as fish reefs falling down and marine organisms separating from the fish reefs. The effect is that the survival rate can be improved accordingly.

[Brief description of drawings]

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

FIG. 2 is a vertical sectional view showing a fish reef according to an embodiment of the present invention.

FIG. 3 is a perspective view showing a state in which a fish reef according to an embodiment of the present invention is installed.

FIG. 4 is a plan view showing a state in which a fish reef according to an embodiment of the present invention is installed.

FIG. 5 is a vertical sectional view showing an example of a conventional fish reef.

[Explanation of symbols]

 G fish reef 1 base 2 space part 3 pillar 4 fence 5 stone material 10 convex part 11 concave part 15 cord body

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Teiichi Ube 5-12-41, Kurikawa, Morioka-shi, Iwate Prefecture (72) Inventor Jiro Ube 13th district, Fudai-mura, Shimoei-gun, Iwate Prefecture 142-2 Fudai

Claims (4)

(57) [Claims] 1. A concrete base installed on the seabed is provided with a fence formed by arranging a plurality of columns made of wood on the base so that a space is formed in the center, and the fence is formed by the fence. In a fish reef in which a space is filled with stones, the pillar is erected so that the fence is formed in a truncated cone shape, and is erected on the base. 2. The fish reef according to claim 1, wherein one or a plurality of large-diameter pillars and small-diameter pillars are alternately erected on the base of the fence. 3. The rope is wound around the fence, and the rope is fixed to a pillar of the fence.
The listed fish reef. 4. The concrete base is provided with a convex portion protruding in a horizontal direction and a concave portion with which the convex portion of another adjacent fish reef can be engaged. Two
Or the fish reef described in 3.