JPS6368032A - Turbo and awabi growing bank - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a turban shell and abalone reef for growing turban shell and abalone.

[Prior art]

When turban shells and abalones, which have passed the juvenile stage, enter the growth stage, they live in rocky reef areas in shallow waters where sunlight reaches the sea floor, where there is a lot of algae to feed on. Both turban shells and abalones are nocturnal and are active at night in search of food.
During the day, turban shells prefer to live in the hollows of rocky reefs where sunlight shines through, while abalone prefer to live in places that are not directly exposed to sunlight.

In order to artificially create a habitat for such turban shells or abalone, the inventors of the present invention have previously developed and filed an application for an artificial carp reef (Utility Application No. 56-055497). The artificial reef has a structure in which a plurality of concave grooves having downward wall surfaces parallel to the top surface are formed on the outer periphery of concrete on a square circular table.

The applicant has also previously developed and filed an application for turban reef.

The turban reef has a structure in which a plurality of multifaceted concave depressions are formed on the outer surface of a concrete block made of a polygonal complex.

[Problem that the invention seeks to solve]

When an artificial reef with the above structure is sunk into the ocean floor, the downward facing walls of the concave grooves formed on its outer periphery will not be directly exposed to sunlight, making it an ideal place for abalone to live. It has been confirmed that abalone live here. Furthermore, it has been confirmed that a large number of turban shells live in the plurality of concave depressions formed on the outer surface of the turban reef having the above structure.

By the way, as mentioned above, it has been confirmed that both turban shells and abalones live in shallow waters where there is a lot of algae, but when they live on rocky reefs during the day, the water depth is slightly different, and turban shells live in relatively shallow waters. Abalone prefers to live in relatively deep places.

Therefore, when an abalone reef with the above structure was sunk, there was a problem in that many abalones lived in the concave grooves at the bottom of the reef, but not so much in the concave grooves at the top. Further, when a turban shell reef with the above structure is sunk, there is a problem in that a large number of turban shells live in the concave depressions formed on the outer surface of the upper part of the reef, but not many in the concave depressions in the lower part.

Furthermore, the above-mentioned problem becomes more pronounced as the height of the reef becomes larger, and there is a drawback that the efficiency with which turban shells or abalone settle there is poor.

The present invention has been made in view of the above-mentioned points, and provides a reef for raising turban shells and abalone, in which turban shells settle in the upper part and abalone in the lower part, and the reef as a whole has good colonization efficiency. It's about doing.

[Means for solving problems]

In order to solve the above problems, the present invention forms the reef body of a turban shell and abalone breeding reef with a concrete block whose upper part is in the shape of a polygonal truncated pyramid and whose lower part is in the shape of a polygonal column, and the outer part of the upper polygonal truncated pyramid part of the reef body is A large number of concave depressions are formed on the surface with at least one flat wall, and a plurality of concave grooves are formed on the outer surface of the lower polygonal column and at least one side parallel to the top surface is composed of a downward facing wall. did. Further, in order to make the reef body have the same external dimensions and a desired weight, a cavity is formed inside the reef body that communicates with the top and bottom of the reef body.

[Effect]

By structuring the reef for raising turban shells and abalone as described above, when the reef for raising turban shells and abalone is sunk on the seabed, sunlight will directly penetrate into the many concave depressions formed in the upper part of the reef body, and the reef will grow. This is a favorite habitat for abalone, and the downward facing walls of the many concave grooves formed at the bottom of the reef body are protected from sunlight and are a favorite habitat for abalone. This creates a reef structure that makes it easy for turban shells and abalone to colonize the upper and lower parts of the reef.

Furthermore, since a cavity is formed inside the reef body, abalone reefs of different weights can be manufactured using a single outer mold.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on the drawings.

Figures 1 and 2 are diagrams showing the turban shell and abalone breeding reef according to the present invention, where Figure 1 (a) is a plan view, Figure 1 (b) is a side view, and Figure 2 is the same as Figure 1 ( It is a cross-sectional view taken along the line A-A of a). The reef body 1 is made of concrete and has a hexagonal truncated pyramid shape at the top.
The lower part has a hexagonal prism shape. A large number of concave depressions 2 formed on multiple surfaces are formed on the outer surface of the upper hexagonal truncated pyramid portion, and concave grooves 3 formed on multiple surfaces on the outer surface of the lower hexagonal prism portion.
is formed. The concave depression 2 is formed incorrectly on five sides,
At least one side has an upward facing wall. concave groove 3
is wedge-shaped with two sides, one of which forms a downward wall. A cavity 4 communicating with the bottom surface is formed inside the reef body 1 made of concrete, and a hole 5 communicating with the cavity 4 is formed at the top.

When the zazae and abalone breeding reef with the above structure is sunk in a shallow sea area where sunlight reaches the seabed, the air in the cavity 4 escapes through the hole 5, so the cavity 4 is filled with seawater.
It is stably installed on the seabed. Further, the upward wall surface of the recess 2 formed on the upper part of the reef body 1 becomes a surface through which sunlight directly enters, and the downward wall surface 3a of the recessed groove 3 becomes a surface through which sunlight does not directly enter. Moreover, when the reef body 1 is sunk in a shallow sea area, the upper part receives a large amount of sunlight, and the lower part receives a small amount of sunlight.

Therefore, as shown in FIG. 3, the concave depression 2 in the upper hexagonal truncated pyramid part of the reef body 1 is a favorite habitat for the turban shells 8, and the downward facing surface 3a of the concave groove 3 in the lower hexagonal prism part is This is a favorite habitat for abalone.

By the way, as mentioned above, the favorite places for turban shells and abalone to live are rocky reef areas where sunlight penetrates deep into the ocean floor and there is plenty of algae to feed on. There are a variety of places, from places where the waves are rough and the current is fast to places where the waves are relatively calm and the current is gentle.

When depositing a reef with the above structure for breeding turban shells and abalone, consider these various conditions, and place heavier ones in areas with rough waves and fast currents, and install heavier ones in areas with relatively calm waves and strong tidal currents. It is necessary to install a reef with a weight appropriate for the area, such as a lighter one in areas where the sea area is gentle.

Conventionally, as a method of changing the reef weight, various outer forms with different dimensions are prepared, a formwork with a size that matches the desired weight is selected from among the outer forms of various types of cores, and the selected formwork is is used to produce reefs of desired weight. Therefore, as mentioned above, there was a problem in that a large number of outer molds had to be prepared.

Since the turban shell and abalone breeding reef of the present invention has the above-described structure, it is possible to create abalone reefs of various weights by changing the size of the cavity 4 even if the outer form has the same dimensions. It becomes possible. That is, if the cavity 4 is made larger, the weight becomes lighter, and if the cavity 4 is made smaller, the weight becomes heavier. In this case, a mold may be used to form the cavity 4, but
The formwork for forming the cavity 4 is not as complicated as the outer formwork, so it is inexpensive, and even if formwork of various dimensions is prepared, it is much cheaper than preparing many outer formworks. becomes cheaper.

In the above embodiment, the reef body 1 is a hexagonal truncated cone, but the reef body 1 is not limited to this, and may be, for example, a square,
It goes without saying that a truncated polygonal pyramid, such as a triangular one or more, may also be used.

Further, in the above embodiment, the concave depression 2 was formed with five surfaces, but as long as at least one wall surface is flat, the other surfaces may be multifaceted or curved. Although the shape of the concave groove 3 is also wedge-shaped with two sides in the above embodiment, it may be of any shape as long as at least one side forms a downward wall surface. Furthermore, there is no limit to the number of concave grooves 2.

[Effects of the Invention] As explained above, according to the present invention, the sun's rays directly shine into the many concave depressions formed in the upper part of the reef body, making them a favorite habitat for turban shells. The downward facing walls of the numerous concave grooves are a favorite habitat for abalone, which are protected from direct sunlight. As a result, the reef has a habitat where turban shells and abalone prefer to live across the upper and lower parts of the reef, improving the habitat efficiency of turban shells and abalone, and since a cavity is formed inside the reef body, the cavity Adjust the size of.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing the turban shell and abalone breeding reef according to the present invention, where Figure 1 (a) is a plan view, Figure 1 (b) is a side view, and Figure 2 is the same as Figure 1 ( A-A cross-sectional view of a), 3rd
The figure is a partial longitudinal cross-section showing the state in which turban shells and abalone have settled on the above-mentioned turban shell and abalone breeding reef. In the figure, 1... Reef body, 2... Concave depression, 3...
- Concave groove, 4... cavity, 5... hole.

Claims (2)

[Claims] (1) On the outer surface of the upper truncated polygonal pyramid part of the reef body, which is made of a concrete block whose upper part is in the shape of a truncated polygonal pyramid and the lower part is in the shape of a polygonal column, a number of concave depressions are formed with at least one flat wall surface, A reef for growing turban shells and abalone, characterized in that a plurality of concave grooves are formed on the outer surface of the lower polygonal column portion, and at least one side parallel to the top surface is composed of a downward wall surface. (2) On the outer surface of the upper polygonal frustum portion of the reef body, which is made of a concrete block whose upper part is in the shape of a polygonal truncated pyramid and the lower part is in the shape of a polygonal column, a number of concave depressions are formed with at least one flat wall surface; A plurality of concave grooves are formed on the outer surface of the lower polygonal prism part, and at least one side parallel to the top surface is configured with a downward facing wall surface, and inside the reef body, there is formed a groove with the weight of the reef body communicating with the top and bottom. A reef for growing turban shells and abalone, which is characterized by forming a cavity for adjustment.