JPS6043323A - Artificial float fish bank - Google Patents

Abstract

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

Description

[Detailed description of the invention] The present invention relates to an artificial floating fishing reef.

Artificial fishing reefs are used to artificially protect and breed fish, and have traditionally been used as fishing reefs by sinking concrete, metal, synthetic resin boxes, old ship hulls, vehicles, etc. .

By the way, fish gather on fishing reefs because seaweed, algae, moss, etc. grow on the surface of fishing reefs, which becomes a base for breeding of blank mean, etc., and fish that feed on plankton etc. gather there. This is because it comes.

Therefore, the area in which artificial fishing reefs can be installed is limited to the water depth where seaweed and other species can sufficiently breed, and this area is said to be approximately 10 meters deep.

This is because at that depth, 'tM grasses such as kelp can be affected by the appropriate temperature and sunlight.

However, there are extremely few places on the seabed with such a limited depth, and even though Japan is surrounded by the ocean, it has not been possible to make full use of artificial reefs.

On the other hand, if we consider the influence of waves, the range of seawater that is moved by the wave force is up to about 10 meters below the water surface, and in that range, if the structure of the artificial reef is not carefully selected, kelp etc. of seaweed would be uprooted.

The present invention was made to improve these points.
Next J: The purpose is to provide an artificial floating eel fishing reef.

<B> Install an artificial floating fishing reef that is not limited to a water depth of m bottom; In the event of a typhoon, etc., the IJ will automatically be affected by waves.
Next, an embodiment will be described.

The artificial floating fishing reef of the present invention is composed of a floating body and an anchor.

<A> Floating body Floating body 1 is a structure having a certain buoyancy, and in the embodiment, it is a structure in which the bottom surface 11 of 11 circular polygons is directed upward, that is, toward the sea surface, and the apex 12 is positioned toward the seabed. use.

However, its shape is of course not limited to an inverted cone; it can also be flat, box-shaped, bowl-shaped with vertical and horizontal through-holes, horizontal holes, or vertical holes, a sphere, and various other shapes. .

A constant buoyancy is a buoyancy that is slightly less than 1 J, or a buoyancy that allows the boat to remain slightly submerged without rising to the surface of the sea.

To explain in more detail, the wave cycle in the case of a typhoon is about 5 to 8 minutes per wave. It sinks at speed I, but provides enough buoyancy to slowly surface when the waves subside.

<Exposure> Constituent materials of the floating body The floating body 1 can be manufactured from synthetic resin, metal, =I concrete, rubber, and other known materials.

<C> How to provide buoyancy In addition to the method of making the floating body 1 itself a hollow body and honeymooning ballast such as water and weight inside it with air and other gases to adjust the amount of air inside, It is also possible to fix a buoyancy body such as a balloon 13 to the side of the part that does not have buoyancy.

<Mouth> Known anchors, rope anchors 2, and ropes 13 can be used, but
In order to maintain the above-mentioned floating state, the length of the rope should be determined according to the condition of the seabed, whether it is in the open ocean where large waves occur, or inside a port, etc. Set to length.

In addition, instead of using a rope, as shown in Fig. 4, a rod-shaped body 4 whose lower end is fixed to the seabed passes through the floating body 1, and the floating body 1 is configured to be able to move up and down along the rod-shaped body 4. You can also do that.

In short, the structure may be such that the floating body 1 can move up and down under the water surface, but cannot move within a certain range.

<C> Other Embodiments As shown in FIG. 6, it is also conceivable that the floating bodies 1 are connected to each other by members 5 having a certain degree of rigidity.

If they are connected in this state, a wide area of the ocean floor can be covered with artificial floating fishing reefs.

Similarly, by interconnecting the upper parts of the rod-shaped bodies 4 shown in FIG. 4 with members 5 similar to those in the above embodiment, an artificial floating fishing reef group with a wide area can be constructed. (Fig. 7) 5-4 Since the present invention is as described above, the following effects can be expected.

Kui〉Artificial floating fishing reefs can be installed on the coast at any depth, regardless of the water depth, so compared to the current artificial fishing reefs that can be installed in very limited places, they can be used widely throughout Japan and are It can make a major contribution to industry.

〈Mouth〉The depth of the water where the fishing reef is installed can be selected in a position where it is best affected by water temperature and sunlight, so by adjusting the water depth set for each coast condition, it is possible to obtain a fishing reef with the optimal environment anywhere. I can do it.

(c) Waves that affected fishing reefs occurred.

Sometimes, the force of the waves sinks the reef itself to a depth where it is not affected by nature, so the seaweed that grows on the reef and the plankton that feed on the seaweed are not stripped away by the waves (forever). Breeding can continue in stable conditions.

(2) Since the fishing reef itself floats due to buoyancy, there is no possibility of it sinking into the sand of the ocean floor over time, unlike conventional concrete fishing reefs that have a large weight.
It functions effectively as an artificial fishing reef for many years.

[Brief explanation of the drawing]

Fig. 1 An explanatory diagram of an embodiment of the artificial floating fishing reef of the present invention Fig. 2 A perspective view of its main parts Figs. 3 to 5 An explanatory diagram of other embodiments Figs. 6 to 7 An explanatory diagram of the combined state 1: Floating Body, 2: Anchor, 3: Rope, 4: Rod-shaped body, 7-

Claims (1)

[Claims] An artificial floating fishing reef in which a floating body with a specific gravity of less than 1 is movable up and down under the water surface and does not move from a fixed position.