JP2815307B2 - Marine ranch development block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention is used when a marine ranch is to be formed on a shallow seabed, for example, a seabed of a large natural stone having a seabed where geology is unsuitable for habitat of seaweed and a water depth of about 5 m or less. About the block.

[0002]

2. Description of the Related Art There is known a technique in which artificial marine reefs and the like are provided on the sea floor to create an ocean ranch and breed fish and shellfish. In such a case, a work reef is loaded with a fish reef and carried, and is sunk to the bottom of the sea to form a marine ranch. However, for example, in a shallow sea with a water depth of about 5 m or less, there is an obstacle to the operation of the work boat, and on the seabed with geological conditions where large natural stones unsuitable for the growth of seaweed are loose, the marine ranch by the work boat Construction is difficult.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a block used when a marine ranch is suitably constructed under such conditions.

[0004]

The present invention SUMMARY OF THE INVENTION may, blocks were entrained seeds seaweed disposed on the seabed, a block to be used for reclamation of ocean ranch promote overgrowth of algae. It is preferred to the string-like body obtained by Fuchaku seeds in this block in order to entrain the seeds of seaweed and winding can with Turkey and.

[0005] The block used for the construction of the marine ranch is a block made of a triangular pyramid, in which a groove for winding a string is provided on the surface, and one surface of the triangular pyramid is a top surface. A marine ranch development block characterized by providing irregularities on the other hand and projecting anchor bolts at the base of the triangular pyramid is preferred. The unevenness provided on the top surface is preferably a broom-like unevenness pattern, that is, a fine unevenness pattern that can be formed when sweeping the unsolidified concrete surface vertically and horizontally with a broom, so that seaweeds are easy to spread roots and are suitable. It is. This block may be made of ordinary concrete, but more preferably made of porous concrete or concrete containing iron powder or ferrite.

[0006]

The method for constructing a marine ranch according to the present invention is to construct a ranch by manual power in a shallow sea where a work boat cannot be operated. For this purpose, a string with seaweed seeds attached is wound around the triangular pyramid block, and the triangular pyramid is placed between the stones on the natural floor with one side of the pyramid facing up. And to promote the growth of seaweed. As the seaweeds prosper, an environment suitable for the inhabitation of fish and shellfish can be created.

The size of this block is such that the length of one side of the triangular pyramid is 30 to 40 cm, the weight is 10 to 30 kg, and it can be easily handled underwater by human power.
The string-like body may be of any shape as long as it can be wound around the block, and may be of any material. For example, fiber bundles made of natural fibers or artificial fibers, woven strings,
Use braid, rope, rope, tape, etc.

[0008] In a marine ranch constructed using the block of the present invention, seaweeds proliferate in the shallow sea and serve as food for seafood.

[0009]

Shows a conceptual diagram of mariculture concrete configuration of the present invention DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. In the shallow water where the large stones 10 are loose on the seabed 12, the seaweeds 13 do not grow. Further, since the work boat 14 cannot be operated freely, it has been difficult to create a marine ranch. In the present invention, a small block 1 is carried by a work boat to a nearby place, and a worker 15 lays the small block 1 in a gap 11 of a large stone 10 on the sea floor, and the seaweeds 13 prosper in the block.

FIG. 1 is a plan view of a marine ranch development block 1 according to an embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a perspective view thereof. The block 1 of the present invention has a triangular pyramid shape and a groove 4 for winding the string 3 around the upper surface 2 and the side surface 5 of the triangular pyramid. A string to which seaweed seeds are attached is wound around the groove 3.

The block 1 of the present invention has a triangular pyramid shape so that it can be easily inserted and installed between large natural stones on the sea floor. Moreover, the stability after installation is good. If the block moves after installation, it adversely affects the growth of the seaweed. However, in the present invention, there is no concern because the block does not move. When the block of the present invention is installed, the triangular pyramid is set so that one surface thereof becomes the upper surface 2, so that the area where seaweeds prosper can be widened.

As the string 3, a twisted string obtained by twisting vinyl chloride having a thickness of about 1 mm to a thickness of about 10 mm and having seaweed seeds attached thereto was used. The groove 4 for winding the string 3 was provided so that the string 3 could be wound on the side and top surfaces of the triangular pyramid, as shown in FIGS. The figure shows an example of this.
A large notch 7 was provided in the area so that the strings could gather there. The number, arrangement, and size of the grooves 4 and the notches 7 are arbitrary, and are not limited to FIGS.

If an uneven pattern such as a broom pattern is formed on the upper surface 2 of the triangular pyramid block 1, seaweeds can be more easily prospered. In other words, the seaweed grown from the string 3 easily adheres and prospers on the uneven surface of the block, and the seaweed easily proliferates on the surrounding natural stones, which is preferable. A hook 8 is provided at the lower end of the triangular pyramid. The hook 8 is used as a hanging hook when the block 1 is manufactured or transported.
Also, after the block 1 is installed on the seabed, the hook 8 enters the seabed sand layer as an anchor bolt, contributes to the stability of the block, and suppresses the movement of the block, so that an environment suitable for the growth of seaweed is created. Useful.

FIG. 4 shows a block 1 of the embodiment,
FIG. 5 is a side view showing a state in which the seaweeds 13 have started to prosper in the block 1. In FIG. 5, the hook 8 is used as an anchor bolt on the seabed 1.
2 also shows the situation where the stability of the block is secured. The block 1 of the present invention may be made of ordinary concrete. However, if it is made of porous concrete having a large porosity of about 10 to 30%, the surface of the porous concrete easily adheres to seaweeds. An environment suitable for the growth of seaweeds can be created.

[0015] Also, in the case where concrete made of iron powder or ferrite is used, seaweeds can easily adhere to the surface, and an environment suitable for the growth of seaweeds can be created. The iron powder or ferrite replaces a part of the fine aggregate, and is set to 5% or more of the fine aggregate volume, and may be entirely replaced. However, from the viewpoint of cost, the replacement amount is preferably 50% or less.

[0016]

As described above, the marine ranch development method of the present invention is constructed as described above, so that the diver dives into the shallow sea, which has been difficult to construct conventionally, and easily creates a suitable habitat for seafood. It contributes to the growth of shellfish such as abalone and turtles, and small fish. INDUSTRIAL APPLICABILITY The block of the present invention can be stably laid on the seabed by a person, and seaweed protruding from the string can proliferate to form a suitable seafood habitat.

[Brief description of the drawings]

FIG. 1 is a plan view showing a block of an embodiment.

FIG. 2 is a side view of a block according to the embodiment.

FIG. 3 is a side view of a block according to the embodiment.

FIG. 4 is a plan view of a large stone.

FIG. 5 is a side view of a large stone.

FIG. 6 is a conceptual diagram of marine ranch development.

[Explanation of symbols]

 1 Block 2 Upper surface 3 String 4 Groove 5 Side surface 6 Side ridge 7 Notch 8 Hook 10 Oishi 11 Gap 12 Sea bottom 13 Seaweed 14 Work boat 15 Worker 16 Sea surface

Claims (1)

(57) [Claims] 1. A block comprising a triangular pyramid, wherein a groove for winding a string is provided on the surface, one surface of the triangular pyramid is a top surface, and a large number of irregularities are provided on the top surface. A marine ranch development block characterized by anchor bolts protruding from the base of a cone.