JPH0928232A - Artificial fish raising bank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a raising bank for small-sized high-grade fish and shellfish such as abalone, top shell, Panulirus japonicus, etc., by installing plural dividing plates made of porous concrete plates inside a bottomed box made of concrete, placing an imperforate upper lid part made of concrete on the top to close the box, being readily assembled on a job site. SOLUTION: Plural sheets of dividing plates 7 composed of porous concrete plates are installed inside a bottomed box 1 made of concrete having an open top, provided with a great number of holes 2 on four peripheral outer walls 4. Each hole 2 of the four spherical outer walls 4 has a such a size as to make object fishes and shellfishes in raising freely pass through the hole but not to take out the fishes and shellfishes in the box 1 when a person inserts his hand into the box. An imperforate upper lid part 9 made of a concrete plate is placed on the top of the box 1 to close the box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish reef, and more particularly to an artificial reef for a small high-grade seafood such as abalone, tuna, lobster and the like among seafood.

[0002]

2. Description of the Related Art In recent years, "resource-controlled fisheries" have become widespread among fisheries throughout the country. Among them, for those that produce seedlings such as abalone and sardines and release them, natural stones are released in the released waters. A method of artificially creating a growing place by stone crushing is generally performed.

However, poaching and theft by poachers such as malicious divers have recently increased rapidly at the stage when the seeds and seedlings have grown to the catch size, which has caused a great deal of damage to the fishermen, and the fishermen themselves have to strengthen their security. Although they are defending, the reality is that they have become so bad that they are not so effective.

[0004]

SUMMARY OF THE INVENTION In view of the above situation, the present invention has an artificially grown reef having an anti-theft function in addition to the functions as an artificial fish reef such as intermediate breeding and collecting (collecting) of seeds and seedlings. Is proposed.

[0005]

According to the present invention, a whole box-shaped concrete perforated wall is formed, and a plurality of partition plates made of concrete perforated plates are installed in the inside thereof, and each hole has a target seafood. It is free to move in and out, but the size of human hands is such that it cannot move in and out freely. Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a partially cutaway perspective view showing an example of an artificial reef according to the present invention, in which 1 is an upper surface made of concrete in which a large number of holes 2 are opened at predetermined intervals in an outer wall of four circumferences. With an open bottomed box, the box 1 can be molded by pouring concrete into the mold, but in order to facilitate mass production and on-site assembly, assembling and welding in a rectangular shape as shown in FIG. Concrete plate (for example, thickness 15 cm) with a large number of holes 2 formed at predetermined intervals on the outside of the frame 3 made of steel
Is bolted from the inside to form the outer wall 4 on four sides, and the bottom plate 6 made of concrete is non-perforated.

The size of the box 1 is, for example, about 1 to 2.5 m in length, width, and height, and the circular hole 2 formed in the outer wall 4 is a catch size for target seafood such as abalone and twill. The size when grown is such that it can freely come in and out, and when a person inserts his or her hand, it cannot grasp it (for example, a diameter of 8 to 12 cm).

Reference numeral 7 denotes a concrete partition plate for partitioning the inside of the box 1 into upper and lower parts, which may be thinner than the outer wall 4, and the partition plate 7 is also provided with a plurality of holes 7a at predetermined intervals. It has been opened. The hole 7a of this partition plate is used for the outer wall 4
The hole 2 may have the same diameter as that of the hole 2, or may have a diameter larger or smaller than that, or may have various diameters.

Numeral 8 is a spacer for stacking the partition plates 7 at a predetermined interval above and below, and shows a dice-shaped concrete block in the figure. Each time the partition plates 7 are stacked in the box 1, the four corners thereof are stacked. To be placed on. The spacers 8 may be integrally formed in advance at the four corners of the lower surface of each partition plate 7.

Reference numeral 9 denotes a non-perforated upper lid made of a concrete plate for closing the upper surface of the box 1 and having a wall thickness equal to or greater than that of the outer wall 4.

On the upper end surface of the outer wall 4 around the four sides, the upper surface of the bottom plate 6 and the upper surface of the upper lid 4, one or a plurality of suspension rings 10 which can be respectively suspended by hooks of a crane are attached, and the box 1 is outside the frame 3. When the suspension ring 10 is formed,
A frame hook (not shown) is hung on the frame to hang it, and the frame 3 is fixed with bolts 5.

When the box body 1 is manufactured, the partition plates 7 are placed every time the spacers 8 are placed on the four inner corners of the box box 1 to form the box box 1 into a plurality of shelves (three steps in the figure). , The whole box 1 is hung by a crane and sunk in a predetermined sea area, seeds such as abalone and rasp are put in the box 1, and then the upper lid 9 is hung by a crane to close the upper surface of the box 1. To do.

In FIGS. 1 and 2, a plurality of partition plates 7 are used like shelf boards to divide the inside of the box 1 into a plurality of upper and lower parts as described above. It is also possible to partition multiple rooms.

3 to 4 show an example in which the partition plate 7 is vertically inserted into the box 1 to form a plurality of chambers in the box 1 in the lateral direction. A rectangular steel guide frame 11 matching the inner surface of the frame 3 for forming 1 is further inserted and installed (see FIG. 4).

On the inner two surfaces of the guide frame 11 facing each other,
A number of guide plates 12 each having a U-shaped cross section corresponding to the number of partition plates 7 to be installed are vertically fixed at predetermined intervals so that the guide grooves 12a face each other, and the partition plates are placed in the facing guide grooves 12a. The inside of the box 1 is divided into a plurality of chambers in the lateral direction by inserting and guiding both side edges of the box 7 (see FIG. 3).

In this case, however, after the inside of the box 1 is manufactured in the same manner as described above, the guide frame 11 is hung and installed in the box 1 by a crane, and the upper end surface of each partition plate 7 is installed. Has a suspension ring 13 attached thereto, and a guide groove 12a of a guide plate 12 facing each other while suspending the partition plate 7 with a crane.
Insert them one after another.

By thus installing the guide frame 11 in the box body 1, the spacers 8 for stacking the partition plates 7 in a shelf type at a predetermined interval are not required, and the assembling work is further speeded up. . In addition, after inserting the partition plate 7 into the box 1 in the vertical direction, seeds and seedlings such as abalone are put into the box 1 to be submerged in a predetermined sea area, and finally the top lid 9 is placed in the same manner as described above. .

[0018]

The artificial reef according to the present invention is constructed as described above and exhibits the following effects. A large number of holes for access to target seafood such as abalone, thorns, and lobster that have grown to the size of catch can be opened and closed on the outer wall that forms the box and each partition plate inside, and seawater exchange can be performed inside and outside, so a stable intermediate seed Can be trained. The large number of holes on the outer wall of the box are of a size that does not allow the hands to be inserted to take out the seafood being raised.
Since a heavy concrete top cover is placed on the upper surface, it is possible to prevent theft of a poacher. The gathering effect of seafood other than the target seafood on the box 1 can be expected, and the seedlings can be protected from natural enemies. It is easy to assemble on site, suitable for mass production, and it is easy to change the sunk position according to changes in the environment.Unlike the conventional method of growing natural stone, abnormal weather such as typhoons It will not be easily washed away and will not move, and if such reefs are continuously installed,
It is also possible to exert a submerged dike effect that reduces wave power.

[Brief description of drawings]

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

FIG. 2 is a perspective view of a frame used to form an outer wall of a box of an artificially grown reef according to the present invention.

FIG. 3 is a partially cutaway perspective view showing another embodiment of the artificial reef according to the present invention.

FIG. 4 is a perspective view of a guide frame used in the embodiment shown in FIG.

[Explanation of symbols]

 1-Concrete Box 2-Hole 3-Rope Frame 4-Outer Wall 5-Bolt 6-Bottom Plate 7-Partition Plate 8-Spacer 9-Top Lid 10-Suspension Ring 11-Guide Frame 12-Guide Plate 13-Suspension Ring

Claims (4)

[Claims] 1. A plurality of partition plates made of concrete perforated plates are installed at predetermined intervals inside a bottomed box whose top surface is made of concrete and which has a large number of holes opened at predetermined intervals on four outer walls. , At least the holes on the outer wall of the four circumferences can freely enter and leave the target seafood being raised, but the size is such that the seafood in the box cannot be grasped when a person inserts his or her hand. An artificial reef characterized by having a non-perforated upper lid made of concrete plate placed and closed on the upper surface of the box. 2. The box body is bolted to an outer wall and a non-perforated concrete plate bolted to a concrete plate having a large number of holes opened at predetermined intervals on the outer four circumferences of a steel iron frame assembled and welded in a rectangular shape. The artificial reef according to claim 1, wherein the artificial reef comprises a bottom plate. 3. The artificial reef according to claim 1 or 2, wherein the partition plates in the box are stacked at predetermined intervals by spacers placed at the four corners of the partition plates each time the partition plates are stacked. 4. A rectangular steel guide frame is inserted and installed in the box body, and two guides having U-shaped cross-sections corresponding to the number of partition plates to be installed on the two opposite inner surfaces of the guide frame. The plates are attached and fixed in the vertical direction at predetermined intervals so that their guide grooves face each other, and both side edges of the partition plate are guided and inserted into the facing guide grooves to divide the box body into a plurality of chambers in the lateral direction. The artificial reef according to claim 1 or 2, wherein: