JP2504922B2 - Artificial 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 artificially formed by being deposited on the seabed.

[0002]

2. Description of the Related Art Conventionally, various artificial fish reefs have been proposed and put into practical use as a part of the cultivation and fishing industry.

Artificial fish reefs are highly stable because they are sunk on the seabed.
It aims to directly increase the catch by forming a habitat where fish can rest, and is generally made of hollow concrete, and various shapes are in practical use.

On the other hand, as a cultured fish reef for the purpose of culturing foraging organisms such as small crabs, small flies and other crustaceans such as fish, small shellfish, polychaetes such as oysters, small fish and attached diatoms, The applicant has provided the Japanese Utility Model Publication No. 4-27333.

In this cultured fish reef, a large number of biscuit corrugated sheets are alternately arranged in a standing position in a frame provided in a pedestal and arranged in contact with each other to form a biscuit corrugated sheet group. It is a crust that forms a laterally open gap between them, and diatoms, corals, and small shellfish attach to prey organisms that grow on the corrugated plate surface in the gap of the biscuit corrugated sheet and prefer small gaps to move inside and outside the reef. Migrating organisms such as species and small fish grow as dwellings in the gaps having a vertically long cross-sectional shape that occur between corrugated sheet plates.

[0006]

By the way, when a large artificial reef made of concrete as described above is used as an outer reef body, and a cultured fish reef (culture reef body) using the above-mentioned biscuit corrugated sheet is combined therein, both of them are used. Although it is possible to combine the individual reefs by placing them individually on the bottom of the reef body, etc., if the reef body is supported by the middle part of the large reef body, There is a problem in terms of strength to form a group of biscuit corrugated sheets by alternately arranging a large number of biscuit corrugated sheets having a length corresponding to the width of the body and having a directivity alternately. It is required to divide the biscuit corrugated sheet group into a divided structure, which complicates the structure, lowers the productivity, and affects the production cost.

The present invention has been made in view of the above points, and an object thereof is to provide a highly versatile artificial fish reef, which is useful as a large fish reef for raising all aquatic organisms, at a low cost.

[0008]

The present invention for achieving the above object comprises a cubic reef body and a cultured reef body assembled in the reef body. The cultured reef body has a section, and a number of short tubes of a predetermined length are laterally inclined slightly in the vertical direction and piled up at an appropriate height to form a short tube group, and the short tube group is formed in the outer reef body. The artificial fish reef is characterized in that the outer reef body is divided into upper and lower parts via a support member at an intermediate portion.

[0009]

[Function] The outer reef body itself forms a reef habitat for fishes as a large artificial reef to improve the reliance of many fishes. The cultured reef body is assembled into the reef body in such a manner that the reef body is divided into upper and lower parts, and diatoms, corals and small shellfish attach to prey organisms on the surface of many pipe bodies forming a short tube group. Mobile organisms such as crustaceans and small fish grow in the space (gap) formed inside and outside the tube as a residence. In addition, many pipes that form a short pipe group are laterally inclined slightly upward and downward to prevent sedimentation of mud, improve circulation of seawater for a long time, and feed to the inside. The effect of the cultured fish reef is maintained by expanding the area where organisms attach.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of an artificial fish reef according to the present invention, and FIG.
Is a front view, FIG. 3 is a plan view, FIG. 4 is a central longitudinal sectional view, and FIG. 5 is an exploded perspective view.

In the figure, 1 is an outer reef body, and 2 is a cultured reef body to be assembled in the outer reef body 1.

The outer reef body 1 is made of concrete and is of a relatively large size in the shape of a rectangular tube cube. The outer reef body 1 has an opening 3 at the top and openings 4 on each of four side walls.

The cultured reef body 2 is assembled with a frame body 5 by an angle or the like in accordance with the outer reef body 1, and a large number of short tubes 6 are laterally inclined to the frame body 5 in a slightly vertical direction to have an appropriate height. To form a short tube group 7 having a length corresponding to the width of the outer reef body, and the short tube groups 7 are horizontally arranged side by side at intervals.

The cultured reef body 2 uses the support member 8 to form the outer reef body 1.
The outer reef body 1 is assembled in the middle part so that the inside is divided into upper and lower parts. The support member 8 has a cross shape that intersects at the center in a plan view, and has four leg portions 8a having a flat mounting surface formed on the upper surface.

The support member 8 may be any member as long as it can support the cultured reef body 2 having a length corresponding to the inner width of the outer reef body 1, and has a form protruding from the inner wall of the outer reef body 1. But it's okay. Further, although it is preferable to use biscuit pipes for the short pipes 6 constituting the cultured reef body 2, the material is not limited. Further, the size of each part of the short pipe 6 is not particularly limited.

In the above-mentioned structure, the culture reef body 2 is assembled in the reef body 1 by using the support member 8, and the reef body 1 is laid down on the seabed and divided into upper and lower parts by the culture reef body 2. , Forms a resting habitat for fish and functions as a fish reef. Further, in the reef body 2 in the middle part of the outer reef body 1, adherent bait organisms such as diatoms, corals and small shellfish grow, and mobile organisms such as crustaceans and small fish grow.
Improve the reliance on fish that feed on them.

[0018]

According to the present invention having the above-mentioned structure, the following effects can be obtained.

(1) Since the cultured reef body is assembled in the large reef body, the reef body not only forms a habitat for fishes to function as a fish reef, but also a bait that grows on the reef body. It is abundant and improves the leaning of fish and enhances the function of fish reefs.

(2) The cultured reef body is located in the middle part of the reef body and is located relatively higher than the seabed in such a manner that the reef body is divided into upper and lower parts. It is difficult to improve the circulation of seawater inside the cultured reef body for a long time, and the growth of the organism as a cultured fish reef is good. In addition, since many short pipes that form a short pipe group are stacked horizontally at a slight incline in the vertical direction and piled up at an appropriate height, it is difficult for sediment to float and the distribution of seawater is improved. Expands the area where organisms attach and maintains the long-term effect of cultured fish reefs.

(3) In constructing the cultured reef,
A large number of short tubes are easy to work because there is no direction for stacking them to an appropriate height sideways, and there is no concern from the viewpoint of pressure resistance strength, and a series of tube groups can be formed according to the reef body. As a result, the structure is simplified and the production cost is reduced.

[Brief description of drawings]

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

FIG. 2 is a front view of the artificial fish reef of the present invention.

FIG. 3 is a plan view of the artificial fish reef of the present invention.

FIG. 4 is a central longitudinal sectional view of the artificial fish reef of the present invention.

FIG. 5 is an exploded perspective view of the artificial fish reef of the present invention.

[Explanation of symbols]

 1 ... Outer reef body 2 ... Cultured reef body 6 ... Short tube 7 ... Short tube group 8 ... Support member

Claims (1)

(57) [Claims] 1. A cube-shaped outer reef body, and a cultured reef body assembled in the outer reef body, wherein the outer reef body has an opening on a side wall thereof, and the cultured reef body has a large number of short bodies of a predetermined length. The pipes are laterally slightly inclined in the vertical direction and stacked at an appropriate height to form a short pipe group, and the short pipe group is divided into upper and lower parts of the reef body through a support member at an intermediate part of the reef body. An artificial fish reef characterized by being assembled in this way.