JPH01132322A - Growing-place for seaweed - Google Patents

Abstract

PURPOSE:To stably cultivate seaweeds and to improve durability, by constructing a growing-place for seaweeds made of pure titanium, titanium alloy or titanium plated material. CONSTITUTION:A float 2a is attached to a growing-place for seaweeds 1a assembled into a box shape, using a processed titanium material to float the growing- place for seaweeds in the sea. In order to prevent movement, the growing-place is fixed to an anchors 4a by cables 3a.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention uses pure titanium, titanium alloy, or titanium-plated materials when creating marine farms, etc., and takes advantage of the good seaweed adhesion and durability of these materials. , concerning seaweed reefs.

[Conventional technology] It has been well known that fish collect insects in structures abandoned on the seabed, such as concrete structures and sunken ships. To,
Active efforts are being made to construct artificial seaweed reefs that can be used as marine farms to breed the seaweed necessary for fish collection, spawning, and growth.

The materials that make up the seaweed reef need to be suitable for the growth of seaweed spores, etc., and have a shape and structure suitable for the growth of fish and shellfish, as well as being easy to manufacture and install. At present, concrete structures are suitable for these purposes.
A seaweed reef with a steel structure is used. In addition to these, seaweed reefs made of organic materials such as bamboo, wood, Manila hemp, or synthetic resin fibers assembled into a fence or net shape are also used.

[Problems to be solved by the invention] By the way, the concrete structure of the seaweed reef is heavy;
Therefore, a great deal of labor and equipment is required for handling, installation, and recovery, and it is easily damaged by impact.Furthermore, concrete remains slightly alkaline due to the lime content for a while after being dropped into the sea, so seaweeds are The problem is that implantation is slow.

Steel structures, like concrete structures, are heavy and require a great deal of labor and equipment to handle, install, and recover.In addition, steel structures oxidize and elute, and the surface peels and floats. It has a problem of lack of durability.

Furthermore, organic materials and synthetic resin fibers all have problems with durability, such as gradual elution into the sea during use.

The present invention has been made in view of the above problems, and provides a seaweed reef suitable for breeding seaweed and advantageous in handling and durability.

[Means for Solving the Problems] The present invention involves elongating pure titanium, a titanium alloy, or a titanium-plated material (hereinafter referred to as titanium material), for example, into a wire shape or expanding it into a net shape, and applying it to seaweed or seafood. It has a flat or three-dimensional shape suitable for cultivation, and is fixed to the surface, middle, and bottom of the sea, and is floated, laid, and placed so that it can be recovered.
It is a seaweed reef that has been submerged (hereinafter referred to as construction).

[Function] Titanium has a specific gravity of 4.51, which is lighter than other metals, and it has flexibility, such as a Young's modulus lower than that of steel, and has tensile strength equal to or higher than that of mild steel. ing. It also has unalterable corrosion resistance against seawater and acids and alkalis, has a very low corrosion potential in seawater (in running water), and is the second most stable metal in aqueous solutions after platinum.

The main structure of this seaweed reef is a processed product of titanium material, and it is constructed in a shape suitable for growing, collecting, and spawning algae or fish and shellfish. The titanium material is not eluted, so spores and seaweeds can easily settle on it, and the titanium material does not disappear due to corrosion and has the strength to withstand external forces such as tides and waves, so it can be used for a long time. Seaweed can be cultivated in a stable manner for a long time.

Titanium is also easy to process, and can be used to grow algae or seafood.
It can be processed and assembled into various shapes suitable for collecting fish, etc., and its light weight makes it easy to manufacture, transport, install, collect and move on land.It has good durability, so it is suitable for the properties of sea areas and seabed bases, as well as aquaculture. It is possible to economically and selectively construct seaweed reefs suitable for

[Example] The titanium products used to construct this seaweed reef include:
Titanium materials can be used as plates, strips, pipes, molds, foils, bars, etc.
It can be used by processing it into a wire, lobe material, or net shape. These processed materials can be used alone or in combination with the above-mentioned various processed materials in the form of boxes, trusses, fences, nets, etc., and installed on the surface, middle, and bottom of the sea in a manner that can be fixed or moved and collected. You can also build reefs.

FIG. 1 (a) to (d) are schematic drawings showing various aspects of constructing seaweed reefs.

Figure 1 (a) shows a structure in which a float 2a is attached to a seaweed reef 1a assembled into a planar shape using titanium products and floated on the sea, and the structure is connected to an anchor 4a set on the seabed by a cable 3a to prevent movement. It has been stopped.

Figure 1 (b) shows a structure in which a seaweed reef 1b is suspended in the sea by a cable 3b from a float 2b floating on the sea, and similarly, to prevent movement, it is anchored to an anchor 4b set on the seabed by a cable 3c. There is.

Figure 1 (8) shows a seaweed reef 1c sunk into the seabed.

Figure 1 (d) shows multiple anchors running parallel to each other between flow 1-2d floating on the sea and anchor 4d installed on the seabed.

This shows a structure in which a cable 3d is stretched vertically and a seaweed reef 1d is supported by the cable 3d so that it can float and sink, and air is supplied and removed from the sea through a hose 6 to an air tank 5 attached to the seaweed reef 1d. The seaweed reef 1d is floated and lowered to be installed at a predetermined depth. In this case, if a rigid material such as a pipe is used instead of the cable 3d, the seaweed reef can be raised and lowered more stably.

FIG. 2 shows a seaweed reef 11 according to an embodiment of the present invention, which is constructed by braiding lobes of twisted titanium wires into a planar net.

FIG. 3 shows a seaweed reef 21 of another embodiment, in which the edges of the seaweed reef 11 described above are bent to form a three-dimensional net-like box.

These seaweed reefs 11.21 are installed so as to be fixed on the surface, middle, and bottom layers of the sea, or to be movable and collectable, as shown in FIGS. 1(a) to (d).

The seaweed reef 11.21 configured in this way has a soft net shape, so it can be bent and expanded freely.
It is easy to collect and move, and it is also easy to collect and move, and it is also possible to
It is possible to freely select the shape to suit the characteristics of the seafood, and the material is formed into a lobe shape with a rough surface, so seaweed has a large settling force. - Once implanted, the roots will bite into the strands and will not peel off easily.

A seaweed reef whose main structure is a processed product of titanium material has the various processed products described above as its main structure, and can be used in combination with a concrete structure, a steel structure, etc.

In this way, the seaweed reef can be more stably installed in the sea or on the seabed.

[Effects of the Invention] As explained above, the present invention is constructed mainly of a processed product of titanium material, and is a highly corrosion-resistant and stable seaweed reef, so spores and seaweed can easily settle on it.
It becomes possible to cultivate seaweed stably over a long period of time, and therefore, it is possible to effectively collect, spawn, and grow fish and shellfish that feed on the seaweed grown in abundance as a marine farm.

In addition, titanium material has good quantity and workability, so it can be mass-produced in factories, and it is easy to transport, install, and collect, so it can not only be installed in locations suitable for sea conditions and aquaculture, but also It can be moved and installed in sandy areas, and it can also be effectively used to purify red seawater caused by excess phosphorus and nitrogen in eutrophic waters.

[Brief explanation of the drawing]

Figure 1 (a) to (:) are schematic diagrams showing various aspects of constructing a seaweed reef, Figure 2 is a perspective view of a seaweed reef according to one embodiment of the present invention, and Figure 3 is another embodiment. FIG. 2 is a perspective view of a seaweed reef. 1 a to 1 d, 11.21·=seaweed reef, 2a. 2b, 2d...Float, 3a-3d...Cable, 4a, 4b, 4d...Anchor, 5...Air tank,
6... Hose agent Patent attorney Masamitsu Akizawa and one other person
id

Claims (1)

[Claims] A seaweed reef whose main structure is made of pure titanium, titanium alloy, or processed titanium-plated materials.