JP2001292654A - Self-quenching type fishing bank apparatus, method for producing the same, method for natural raising of algae and raising base therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide both a self-quenching type fishing bank apparatus having a lightweight, excellent insulation workability, a low cost, neither causing a residual waste on the bottom of the sea, etc., nor affecting an underwater natural environment such as bottom of the sea, riverbottom, etc., and also provide a method for producing the same. SOLUTION: A wood material is cut into a sliced piece state to give an excelsior, which is used as a main material, kneaded with cement and water and press molded. The obtained excelsior plate itself or a structure based on the excelsior plate is used to form both an upper structure and an excelsior foundation. The upper structure is fixed to the excelsior foundation in a standing state to constitute the objective self-quenching type fishing bank apparatus. Spores of a fixed alga are applied to a compressed solid body as the excelsior plate, germinated in a water tank arranged on a ground side and thrown into water of natural world needing the breeding of the spores and algae are raised. The apparatus has natural degradability, lightweight properties and handling easiness to a concrete fishing bank and an installation operation is readily carried out.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial reef apparatus for collecting various fishes by submerging a structure on the seabed, and more particularly, to self-dissipation in consideration of long-term conservation of the seabed environment and natural protection. The present invention relates to a fish reef device and a method for manufacturing the same.

[0002]

2. Description of the Related Art By installing fish reefs on the seabed or riverbed, it is possible to collect fish in the surrounding area and increase the catch, thereby contributing to the promotion of the fishery and fishery processing industries. Conventionally, fish reefs are made by combining wood, stone, or concrete, and embedding wood vertically in concrete, or assembling wood into a girder and fixing it with anchor bolts, and storing stones inside the girder. It is built. FIG. 11 shows one example of a conventional fish reef,
In the figure, for example, the bases of a plurality of log-shaped timbers 100 are embedded and fixed in a concrete base 102, and a space is formed between them so as to be vertically erected on the base. This is submerged on the required seabed or the like to make a fish reef, and algae are implanted on the surface of the wood 100, and plankton and microorganisms inhabit with it, and various fish gather for them. ing. On the other hand, large concrete blocks, metal,
There have been efforts to collect various fishes by dropping various types of stones and various plastics into the sea or the like in order to use them as vegetation bases for algae to form a population of seaweed beds.

[0003]

A fish reef constructed by incorporating wood on the basis of the above-mentioned conventional concrete, in which the wood portion is eaten by aquatic creatures such as fungi and bark beetles with the passage of time, and is relatively short-lived. In addition, there is a problem that it cannot function as a fish reef and its durability is short. In addition, these aquatic organisms not only damage the timber itself but also the joints between the timber and the concrete foundation, which damages the bolt connection of the foundation and causes the timber to float on the surface of seawater, for example, on ships and water. This has been a problem in that it hinders navigation of vehicles and causes hull damage and personal injury. Further, since the wood part, which is the main part of the effect of collecting fish as a fish reef, tends to separate quickly, even if the fish reef is to be constructed again on the seabed or the like, as shown in FIG. become,
In addition to hindering the installation of new fish reefs, concrete foundations remain on the sea floor for a long time, changing the sea floor or the natural environment in the sea, and thus changing the tide of the sea area, affecting the natural conservation of fishing grounds and tidal flats A different point,
It was a problem. Furthermore, there is a problem that the fish reef including the large concrete base is heavy, requires a large crane for the installation work, and involves a danger at the time of the work of the auxiliary worker.

Recently, Japanese Patent Application Laid-Open No. Hei 8-196165 discloses that a synthetic resin layer to which graphite silica having a far-infrared ray radiating function is added is formed on the surface of wood, and the bottom is formed of the synthetic resin layer-formed wood. A fish reef that contains stones inside the frame has been proposed, but even if the wood part decomposes over time, the synthetic resin layer on the surface remains permanently without being decomposed,
It is scattered and causes ocean bottom pollution, and there is a concern that adverse effects on aquatic plants and animals due to the action of environmental hormones.

[0005] Further, in the case of algae base materials made of large concrete blocks or plastics, the surface is relatively smooth or smooth, so that the roots of the algae cannot catch the base material and run off in the water, or Could remain in water without being decomposed for a long period of time and would drive out useful seagrass. Further, it is difficult to re-install, and there is a possibility that an adverse effect on the environment may be caused.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and one object of the present invention is to make it possible to easily install a fish reef over time, to be light in weight, to have good installation workability, and to reduce the installation work. An object of the present invention is to provide a self-eliminating fish reef device which is costly and does not adversely affect the natural environment underwater such as the seabed and riverbed without generating residual waste on the seabed and the like, and a method for manufacturing the same. . Another object of the present invention is to provide a method for naturally growing algae which can surely grow useful seagrass in the natural waters where it is desired to prosper, and which does not cause any adverse effect on the environment. It is to provide.

[0007]

In order to achieve the above-mentioned object, the present invention mainly comprises wood wool 20 obtained by cutting a woody material into slice pieces, and mixes it with cement and water. The upper structure 12 is formed from the obtained wood fluff 16 itself or a structure based on the wood fluff, and the wood wool base 14 is formed. The self-eliminating fish reef device 10 is configured by fixing the upper structure 12 to the base 14 in an upright state.

The upper structure 12 and the wooden wool base 14 are
The specific gravity may be adjusted to such a degree that it can sink in water.

The upper structure 12 is formed by kneading a mixture of wood wool 20 with an aggregate and cement, kneading the mixture, press-molding the kneaded wood wool 20, and processing the wood wool board 16 into a long plate shape. It is also possible to use a column 28 formed by superimposing the wooden wool long plates 26, which may be erected on the wooden wool base 14.

[0010] At least the wooden wool base 14 may be set so that its specific gravity increases from the upper part to the lower part.

Further, in the present invention, the specific gravity is adjusted to such an extent that the fluid mixture obtained by cutting wood material into sliced pieces and obtained by blending wood wool, cement and water is press-molded and settled in water. A wooden fluff board 16 and a wooden fluff base 14 larger than the wood fluff board are formed, and the wooden fluff board 16 or a structure (12) formed from the wood fluff board is erected and fixed to the wooden fluff base 14 to have any rigid body shape. And a method of manufacturing a self-disappearing fish reef device which is used as a fish reef for installing on the water bottom.

[0012] In the method of manufacturing a self-disappearing fish reef device, at least the wooden wool base (14) may be formed by pressure molding so that the specific gravity increases from the upper portion to the lower portion.

Further, the present invention mainly comprises wood wool obtained by cutting a wooden material into slice pieces, kneading the resulting mixture with cement and water, and press-molding the obtained fluid mixture. To form a compressed solid body containing wood wool, spray the spores of the desired algae on the compressed solid body, allow them to germinate in an aquarium installed on the ground side, and throw them into natural water in which they want to breed. From the natural algae breeding method.

The specific gravity may be adjusted by adjusting the compounding amount of the cement, and the decomposition rate of the compressed solid after being put into natural water may be adjusted.

Further, the present invention mainly comprises wood wool obtained by cutting a woody material into slice pieces, kneading the resulting mixture with cement and water, and press-molding the obtained fluid mixture. To form a compressed solid body containing wood wool, spray the spores of the desired algae on the compressed solid body, allow them to germinate in an aquarium installed on the ground side, and throw them into natural water in which they want to breed. Of a natural algae growing substrate.

[0016]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 8
Shows one embodiment of the self-eliminating fish reef device 10 of the present invention. The self-dissipating fish reef device 10 basically forms an upper structure by a wooden wool board, forms a wooden wool base serving as a support base, and fixes them to form a rigid structure into a fish reef. FIG. 1 illustrates a processing step of a wooden wool board 16 which is a basic structure of the upper structure 12 and the wooden wool base 14.

In the figure, a raw wood 18 is cut to a required length, and the raw wood 18 is cut into slices by a cutting device to cut a large number of wood wools 20 made of wood fibers. Logs are, for example, cedar,
Hinoki, pine or any other wood may be used. Moreover, it is preferable to use thinned wood or wood residue. Wood wool is, for example, 0.
It is formed to a thickness of about 5 mm to 50 mm, a thickness of about 0.4 mm to 0.6 mm, and a length of about 20 mm to 400 mm, and an appropriate amount of cement and water are mixed and kneaded to adjust the water content. 21 is generated. on the other hand,
The lower plate frame 22 for molding is supplied into, for example, a conveyor line (not shown), and cement powder is sprayed on the entire surface of the lower plate frame 22 in the middle of the line.
The cement-containing fluid that has been stirred with a mixer is evenly poured from the hopper onto the lower plate frame 22 over the entire surface.
The upper plate frame 24 is placed from above, and a plurality of these layers are stacked. The upper plate frame 24 is pressed from the upper surface side by a press device and pressurized. The wooden bristle board 16 is pressed by a press device and compacted.

The fluid mixture 21 obtained by adding cement and water to wood wool may be mixed with, for example, wood scraps, charcoal, sand, and the like, if necessary.

The amount of cement is related to the rate of decomposition in water corresponding to the cohesive strength of the solidified, woody slabs and the woody slab, and therefore, by adjusting it, The reef installation and rebuilding plan, such as whether or not the reef should be eliminated in about 5 years or more, should be designed to determine the amount of cement.

Further, the cement-combined body containing wood wool (for example, wood wool board 16) is basically a porous structure as shown in FIG. 2, and since wood wool itself has buoyancy, it is used as a structure. Lightweight when assembled. Therefore, at the time of installation at the time of introduction into the sea, the workability is good, and work can be performed with a small crane or the like, but it is necessary to sink to the bottom of the water, and it can sink in the sea or in water such as fresh water. It is necessary to adjust the specific gravity to a certain degree. In the embodiment, for example, the wood wool board 16 after compression press molding is set to have a specific gravity of 0.8.
Since a large number of gaps are formed inside and outside due to, for example, it has been confirmed that the gaps are filled with seawater and settle on the sea floor. The specific gravity may be higher than this, but from the viewpoint of workability, the specific gravity is preferably 0.8 or more, and preferably in the range of about 0.8 to 1.2. The specific gravity of the wood wool board can be adjusted by adjusting the pressing pressure applied to the fluid mixture, adjusting the amount of cement to be mixed, or adjusting the amount of charcoal when mixed.

The pressed and dried wood wool board 16 is cut into an appropriate size, and processed as needed to form the upper structure 12. In addition, when the fluid mixture 21 is pressed and compressed, the upper and lower plate frames 22 and 24 are relatively large, so that the upper structure 12 can be supported at the lower portion, for example, at least the wood wool plate 16. Form a larger wool base. The wood wool board 16 has extremely good cutting and workability. For example, in a case where the wood wool board 16 is connected to a rocky reef portion in advance when installed underwater and installed, a hole is formed or a desired shape is formed as necessary. The shape can be easily formed.

For the wooden wool base, for example, the wooden wool board 16
The compression residue of the fluid generated at the time of press compression molding of the fluid, the scrap material generated at the time of cutting the wood wool board, etc. are crushed, mixed with cement and sand, etc., and the base is formed into a thick rectangular plate, for example. It is poured into a body frame and subjected to press compression molding while applying vibration. This wood wool base 14 supports the lower side of the upper structure 12, and is therefore preferably set so that the specific gravity increases from the upper part to the lower part. That is, it can be obtained by molding such that the density of the material is inclinedly increased in the thickness direction from the front surface to the back surface. For example, in the state of the fluid mixture 21, the water content is set to, for example, about 40%, the fluid mixture 21 is put on a lower plate frame from a hopper, and cement is conveyed to a next step by a conveyor line or the like. Wood, wool, and other materials are precipitated on the back side, and are formed so that the density gradient increases from the upper side to the lower side. In this case, the mixing amount of cement and water and the transport time until the next pressing step are set in consideration of the balance with the setting time of the cement.

Further, at least the wooden wool base may be configured so that the density of the mixture component increases from the upper part to the lower part. In this case, it is preferable that the decomposition occurs at least before the upper structure. No fish reef function can be maintained. Therefore, from this point, it is more preferable that the specific gravity and the density of the mixture component such as wood wool and charcoal are formed so as to increase from the surface (upper surface) side of the base to the back surface (lower surface) side.

In the present embodiment, the press-molded wooden wool board 16 is processed into a long plate shape as shown in FIG. 4 as necessary to form a plurality of long single plates 26, which are shown in FIG. A laminated body-like column 28 is formed by means of tightening or bolt fixing so as to overlap in the thickness direction as described above, and an anchor member 30 protruding in a cross shape made of wood or metal is fixed to the lower end side. Let me. Then, as shown in FIG. 5, the fluid mixture 21 is put into the base formwork 32 together with the compressed residue discharged in another process and the crushed material such as offcuts generated at the time of cutting the wooden wool board, and The column 28 is installed in the base frame 32 with the anchor member 30 mounting side of the assembled column 28 at the lower side, and in this state, vibration is applied to compact and solidify and mold. After the solidification, the upper structure 1 is released from the base formwork 32, and the plurality of pillars 28 are fixed to the wool base 14 shown in FIGS.
Fish reef device 1 as a rigid fish reef structure with 2 formed
0 is formed, and is settled, for example, on the sea floor or the water floor. Thereby, particularly, the upper structure 12 portion functions as the main body of the reef, collects algae and microorganisms, and further collects various fishes required for these in the periphery.

As the upper structure, the wooden fluff board 16 obtained by simply compressing and molding the fluid mixture 21 may be erected on the wooden fluff base as it is, or as shown in FIGS. The support 34 made of metal or the like may be erected and fixed at the four corners of the frame-like wooden wool base 14, and the wooden wool board 16 may be processed into a long plate-like shape and assembled into a fence shape. . In short, the configuration of the upper structure 12 may be any configuration as long as it is solidified with cement based on wood wool and has self-dissipating properties, and any configuration that can collect algae and fish as the main reef body. Good. Further, the fixing between the wooden wool base 14 and the upper structure 12 does not need to be of the embedded type as in the embodiment, and various fixing means such as bolt fixing, fitting, caulking, tightening by a cable, etc. may be used. .

When such a self-eliminating fish reef apparatus 10 is installed on the seabed, for example, the apparatus can be easily transported and moved, and can be easily installed on a desired seabed using a small crane or the like. Since the overall load is light, the danger to the worker during work is reduced, and work accidents and the like can be prevented. After the installation of the device 10, for example, in about 5 years, the woody portion of the wool decomposes, and the upper structure 12 and the wool base 14 naturally disappear. In addition, it has been experimentally confirmed that the growth base material as a wood wool board formed in the same process to be described later is depleted to a volume ratio of 5% every two months and to 20% in eight months. . The materials of the fish reef apparatus of the present invention are all naturally occurring, and therefore, even if scattered in the sea, they do not affect the environment such as basic marine aquatic organisms such as the effects of environmental hormones. In addition, since the upper structure may have any structure, it can be formed at low cost by using thinned wood, offcuts discharged during lumbering, and wood that cannot be provided as a product on the market. In particular, in the case where the reef device is disassembled and a new reef is to be installed in a period of about 5 years, the reef device according to the embodiment may be installed in the same manner as when the new reef was installed. The installation is not hindered by the presence of fish reefs, and smooth re-installation work can be performed. The self-eliminating fish reef device of the present invention can be applied not only to the seabed, but also to freshwater environments such as rivers, lakes and ponds.

Next, an embodiment of the natural algae growing method and the growing base material of the present invention will be described. This natural growth method of algae is based on wood wool obtained by cutting a woody material into slice pieces, kneading the mixture with cement and water, and press-molding the obtained fluid mixture. This is similar to the above-described self-eliminating fish reef apparatus in that a compressed solid body containing tree wool is formed. The shape of the compressed solid body containing the wood wool may be an arbitrary three-dimensional shape such as a three-dimensional square shape, a cylindrical shape, a cylindrical shape, a three-dimensional polygonal shape, and an irregular shape. After the compression molding, the structure may be cut to an appropriate size to form the structure. Preferably,
It is better to drill holes so that it can be easily fixed when installed underwater. The fluid mixture obtained by adding cement and water to wood wool may be mixed with, for example, wood offcuts, charcoal, sand, and the like, if necessary.

In the method for naturally growing algae, the compressed solid is used as a vegetation base for algae, and spores of a desired algae are sprayed on the compressed solid and germinated in a water tank installed on the ground.
This is thrown into natural waters where it is desired to breed, and algae are grown. As the algae, blue seaweed, black turtle, akamoku and other algae which are easy to feed on fish and other microorganisms preferred by fish are suitable. For example, it may be used for human consumption such as Tosakanori or Hijiki to directly generate economic value.

After the spores germinate in the aquarium, the time at which they should be dropped or placed in the natural waters to be grown depends on the type of algae. What is necessary is just the state which was done. In addition, the season of the underwater installation is selected and performed. Since the compressed solid body containing the wool can be easily cut, the size and shape of the vegetation base material can be arbitrarily designed depending on the type of algae and the installation location.

As described above, for example, spores of seaweed are implanted and germinated on the surface of the compressed solid body, and then placed in the still water to grow algae. When the algae have grown and released the spores, the base material itself is naturally decomposed by the mixing and designing of the raw materials. Since the compressed solid body is made by compacting wood wool fibers and the like with a cement paste, it has voids on the surface and inside, and therefore, the roots of the grown algae can catch the compressed solid body as a base material. Therefore, it is not dropped into the natural waters and immediately washed away by the water flow to be washed away. Then, as time passes, the roots of the algae are activated from the compressed solid body to the surrounding rocks and the like, and naturally grow on the rocks and the like in the sea. When the base material is renewed, the compressed solid body has a self-decomposition function and basically self-decomposes over time according to the mixing ratio of cement and wood wool. Regarding the security, it can be installed in the same place without having to remove the previously installed one. The growth substrate according to the method of the present invention, unlike concrete, metal, stone, etc., is lightweight and transportable,
Relocation from the water tank, underwater dropping and other operations are easy and workability is good. Also, unlike the case of resins such as FRP, there is no influence of environmental hormones and the environmental load is small. In addition, general timber can be used, as well as thinned timber and remaining wood.
It also contributes to forestry promotion.

The compressed solid in the present embodiment is:
It has the same configuration as the wood wool board 16 of the above-described embodiment, and a detailed description thereof will be omitted. For example, it is preferable to set the specific gravity to 0.8 or more so that the specific gravity can be settled in the sea or in the water such as fresh water. In particular, compressed solids containing wool are excellent in machinability and workability, and are not found in conventional base materials in that they can be freely processed and set to the optimal solid size and shape according to each algae. Has great advantages.

In addition, by adjusting the amount of cement, the specific gravity can be adjusted, and the decomposition rate of the compressed solid after it has been introduced into natural water can be adjusted. The specific gravity can be adjusted by adjusting the press pressure of the fluid mixture, adjusting the amount of cement, adjusting the amount of charcoal for weight reduction, and the like. This makes it possible to make a long-term plan such as the type of propagation of the vegetation base material and the time of renewal, and to set the formation of artificial seaweed beds in the water area to an optimal state.

Example 1 (1) Mature red mallow (one kind of seaweed forming a seaweed bed called a seaweed bed) was collected, and seedlings were collected in the following steps. Fill a 500 liter circular panlight tank with filtered seawater. Substrates (woody board, charcoal-treated woody board) are placed side by side on the bottom of the tank. The mother algae is put in the water tank, and left still for one week in weak running water. The water temperature was set to 23 ° C., and liquid fertilizer was applied once every two weeks. In addition, the wood fluff is 20 cm in width, 15 cm in height and 15 cm in thickness using a cedar wood wool sliced piece by the same manufacturing process as the wood fluff as the basis of the fish reef device of the above embodiment. A wood wool board with a size of 5 cm and a mixture of powdered coal in a kneading process of cement and water were used. (2) One week later, only mother algae was removed, and room culture was performed under weak running water and weak aeration. (3) Two weeks later, germs of Akamok attached to the substrate were confirmed. The adhesion amount was 4.9 individuals / square centimeter for the wood fluff, and 1.6 individuals / square centimeter for the charcoal-treated wood fluff. (4) Further, after four months from (3), the wood fleece grew to an average leaf length of 0.39 cm and the charcoal-treated wood fleece grew to 0.24 cm. (5) After about three months of (4), the wooden hairboard has an average leaf length of 1.46 cm (three individuals were confirmed on the board),
It grew to 1.80 centimeters (more than 10 individuals were confirmed on the board) on charcoal-treated wood wool board. (6) Two days after (5), the substrate supporting the germ of the algae that had grown was offshore and submerged in the natural sea with a water depth of about 6 m. (7) Underwater photography confirmed that the juveniles were alive on each substrate. [Example 2] In Example 1, the base material charged into the sea was
Observation was conducted every month, and during that time, it was confirmed that the wear was lost at a rate of 5% by volume. Eight months after the introduction, the volume had decreased by about 20%. Although the rate of wear is difficult to measure in detail, it is presumed that the rate of decomposition is accelerated and the volume is reduced. In this example, the specific gravity was adjusted to 0.8. However, the specific gravity is related to the porosity of the wooden fluff, and the larger the specific gravity, the smaller the wear rate with the passage of time, and the smaller the specific gravity. Larger wear rates are obtained.

Although the self-eliminating fish reef apparatus and the method for producing the same, the method for naturally growing algae and the substrate for growing the algae according to the present invention have been described above, the present invention is not limited to the above-described embodiment. Modifications that do not depart from the essence of the invention described in the claims are included in the present invention.

[0035]

As described above, according to the self-eliminating fish reef apparatus of the present invention, the main material is wood wool obtained by cutting a woody material into slices, and this is mixed with cement and water. Kneading, press-molding this, and forming the upper structure with the obtained wood fluff itself or a structure based on the wood fluff, forming the wood fluff base, Because the upper structure is fixed in an upright position,
i) The device is lightweight and ii) easy to transport and manage, and iii) easy to cut and process into any shape and size of the base and upper structure, and iv) easy to install reefs. , V) work can be performed in a short time, and vi) the entire fish reef is decomposed and lost in units of several years, for example, and there is no obstacle to re-installation work, and the installation work can be performed smoothly. It is possible to prevent ship damage and personal accidents due to floating beforehand, viii) effectively use thinned wood and wood offcuts, viv) increase the fish catch without adversely affecting the environment of sea and water areas, xi) It is possible to achieve fishery promotion.

The upper structure and the wooden wool base are configured to have a specific gravity adjusted to such a degree that they can sink into water, so that, for example, an anchor for fixed support on the sea floor or the like can be connected. It can be settled down with only a reef device, and it is not necessary to install anchors and wires for fixing the seabed separately from the device, improving the installation workability of the device and keeping the operation cost low.

The upper structure is formed by mixing wood wool with an aggregate and cement, kneading the mixture, press-molding the kneaded wood, processing the wood wool board into a long plate shape, and processing the plurality of wood wools. Since it is composed of pillars formed by superimposing a bristle plate and standing upright on a wooden wool base, it can be manufactured in a simple manufacturing process at low cost.

Further, at least the wool base is configured so that the specific gravity increases from the upper part to the lower part, so that the wool base having a stable supporting force can be formed.
By increasing the density of the components toward the lower portion, the fish reef function can be reliably maintained without causing decomposition at least before the upper structure.

Further, according to the method for manufacturing a self-disappearing fish reef apparatus of the present invention, a fluid mixture of wood wool, cement and water obtained by cutting a wooden material into slices is press-molded to form a water-based mixture. Form a wooden wool board adjusted to a specific gravity that can sink to a wooden wool board and a wood wool board larger than the wood wool board, and stand and fix a wooden wool board or a structure formed from the wood wool board on the wood wool board. Since it is configured to form an arbitrary rigid structure and use it as a fish reef for installing on the water bottom, it is lightweight, easy to transport and manage, and the work for installing the fish reef is easy and the work can be done in a short time, In addition, the installation work can be performed smoothly without obstructing the re-installation work, and the ship can be prevented from being damaged due to the shedding and floating of timber, accidents and injuries can be prevented, and thinned wood and wood offcuts can be used effectively. Can be caused.

Further, at least the wool base is formed by pressure molding so that the specific gravity increases from the upper part to the lower part, so that the wool base having a stable supporting force can be formed.

In the method for naturally growing algae of the present invention,
The main material is wood wool obtained by cutting woody material into sliced pieces. This is mixed with cement and water, kneaded, and the resulting fluid mixture is press-molded to give a compressed solid containing wood wool. And spores of the desired algae are sprayed on the compressed solid body, germinated in an aquarium installed on the ground side, and put into natural water in which it is desired to breed to grow algae. In addition to ensuring stable algae harvesting in natural waters by ensuring that algae survive on natural rocky areas, artificially growing useful specific seagrass, which is a base for fish and shellfish and microorganisms, Is possible. In addition, the self-decomposition function reduces the environmental burden, and when renewing the algae base material, simply insert and install the compressed solid as a vegetation base material that has activated new germ,
Update installation can be performed in a short time.

Also, by adjusting the amount of cement to adjust the specific gravity, and by adjusting the decomposition rate of the compressed solid after being put into natural water, the type of propagation of the vegetation base material, Make long-term plans such as renewal time,
It is possible to set the artificial seaweed bed formation in the water area to an optimal state.

According to the natural algae growth substrate of the present invention, wood wool obtained by cutting a woody material into slices is used as a main material, and this is mixed with cement and water and kneaded. The obtained fluid mixture is press-molded to form a compressed solid body containing wood wool, and spores of a desired algae are sprayed on the compressed solid body, germinated in a water tank installed on the ground side, and propagated. Since the algae are grown in the natural waters that you want to grow, the algae can be surely activated in natural rocks in the natural waters, and a stable algae harvest can be ensured. It is possible to artificially grow certain useful seaweeds that are substrates for microbial propagation. In addition, the self-decomposition function reduces the environmental burden, and when renewing the algae base material, simply insert and install the compressed solid as a vegetation base material that has activated new germ,
Update installation can be performed in a short time.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a process of manufacturing a wood wool board according to an embodiment of the present invention.

FIG. 2 is an explanatory perspective view of a wooden board.

FIG. 3 is an explanatory perspective view of a column according to the embodiment.

FIG. 4 is an explanatory perspective view of a long single plate.

FIG. 5 is an explanatory view illustrating a method of fixing the wooden wool base and the upper structure.

FIG. 6 is a partially cutaway front view of the self-eliminating fish reef device according to the embodiment.

FIG. 7 is an explanatory perspective view of the same.

FIG. 8 is an explanatory view of the plane configuration.

FIG. 9 is an operation explanation and configuration explanatory view showing another example of the upper structure.

FIG. 10 is an explanatory perspective view of the assembled state.

FIG. 11 is an explanatory perspective view of a conventional artificial reef.

FIG. 12 is an explanatory perspective view of the concrete base portion.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Self-eliminating fish reef apparatus 12 Upper structure 14 Wood wool base 16 Wood wool board 20 Wood wool 21 Fluid confusion

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Nagahachiro Nagasawa 3-11-38 Higashi-cho, Kumamoto City Inside the Industrial Technology Center in Kumamoto Prefecture (72) Inventor Masuo Sonoda 3-11-38 Higashi-cho Kumamoto City Industrial Technology Center Kumamoto Inside (72) Inventor Yukinori Ando Kumamoto Prefectural Fisheries Research Center, Oyano-cho, Amakusa-gun 2450-2 Kumamoto Yasufumi Yasufumi Kamamoto Oyano-cho, Amakusa-gun Kumamoto Pref. Prefectural Fisheries Research Center (72) Inventor Hideyuki Kato 4171 Kamiushida-cho, Hitoyoshi-shi, Kumamoto F-term (reference) in Kyushu Kige Industries Co., Ltd. 2B003 AA01 BB04 CC05 DD01 DD06 EE04 2D018 EA11

Claims (9)

[Claims] 1. A wood wool board obtained by cutting wood material into sliced pieces, using wood wool as a main material, mixing this with cement and water, kneading the mixture, and press-molding the wood wool. A self-dissipating fish reef that forms an upper structure by itself or a structure based on a wooden wool board, forms a wooden wool base, and fixes the upper structure to the wooden wool base in an upright position. apparatus. 2. The self-eliminating fish reef apparatus according to claim 1, wherein the upper structure and the wooden wool base are adjusted to have a specific gravity capable of sinking in water. 3. The upper structure is formed by kneading a mixture of wood wool with an aggregate and cement, kneading the kneaded mixture, press-molding the kneaded mixture, processing the resulting wool board into a long plate shape, and processing the plurality of processed wood wools. The self-eliminating fish reef device according to claim 1 or 2, comprising a pillar formed by superposing a fleece plate, and standing on a wooden wool base. 4. At least the wood wool base is set so that its specific gravity increases from the upper part to the lower part.
4. The self-eliminating fish reef device according to any one of items 3 to 3. 5. A wood fleece board adjusted to a specific gravity such that it can be formed by press molding a fluid mixture of wood wool, cement and water obtained by cutting wood material into slice pieces, and sinking in water. Form a wooden wool base larger than a wooden wool board, and stand and fix a wooden wool board or a structure formed from a wooden wool board on the wooden wool base to form an arbitrary rigid structure and install it on the water floor Of manufacturing a reef device to be used as a fish reef. 6. The method for manufacturing a reef apparatus according to claim 5, wherein at least the wooden wool base is press-molded so that the specific gravity increases from the upper part to the lower part. 7. A wool obtained by cutting a woody material into slice pieces as a main material, mixing the kneaded mixture with cement and water, and press-molding the obtained fluid mixture to form a wool. A compressed solid body is formed, and spores of a desired algae are sprayed on the compressed solid body, germinated in a water tank installed on the ground side, and put into natural water in which it is desired to breed to grow algae. A natural method of growing algae. 8. The method for naturally growing algae according to claim 7, wherein the specific gravity is adjusted by adjusting the compounding amount of the cement, and the decomposition rate of the compressed solid body after being introduced into natural water is adjusted. 9. A wool obtained by cutting a woody material into slice pieces as a main material, mixing this with cement and water and kneading the mixture, press-molding the obtained fluid mixture to form a wool. A compressed solid body is formed, and spores of a desired algae are sprayed on the compressed solid body, germinated in a water tank installed on the ground side, and put into natural water in which it is desired to breed to grow algae. A natural algae base material for algae.