JPH03132503A - Multi-purpose pile for breakwater, fishing rocks and fishing nest - Google Patents

Abstract

PURPOSE:To make small and nestable of an installation area by providing a plurality of holes passing through the inside and outside of a cylindrical pile to the lower part thereof having a plant section provided with a screw-like projected thread on the lower end and, at the same time, driving a plurality of piles to the sea bottom at specific intervals. CONSTITUTION:A plant section 3 having a screw-like projected thread is connected to the lower end of a cylindrical pile 1 of concrete or synthetic resin together as a unit. A plurality of holes 2A1 passing through the inside and outside of the cylindrical pile are provided to the upper sea bottom section 2A of the plant section 3. After that, a plurality of piles 1 are driven zigzag to the sea bottom at specific intervals. An area to drive piles is narrowed so as to keep them from falling. According to the constitution, a fishing nest as a breakwater can be easily installed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a multi-purpose pile for breakwater reef fish nests.

[Prior Art] Conventionally, this type of device is as follows.

1) Those using a submerged type wave-dissipating block such as Tetrabot 1~ (trademark).

2) Those using floating fish reefs.

3) A gentle slope type and a slit type upright revetment.

[Problems to be Solved by the Invention] The conventional techniques described above have the following problems.

1) Because of the structure in which many wave-dissipating blocks made of concrete are piled up, the installation site occupies a wide area of the seabed where marine resources proliferate.

2) The seawall itself may collapse due to salt damage caused by the spray generated by direct waves.

The present application was made in view of the problems of the prior art, and its purpose is to provide a solution to the above-mentioned problems.

[Means for Solving the Problems] In order to achieve the above object, the present invention is as follows.

A threaded protrusion 3B is provided in a spiral shape on the outer peripheral surface of the underground planting part 3 which is integrally connected to the lower end of the cylindrical pile body 2, and the pile body 2 is connected to the underground planting part 3. 3, and an upper part 2B located above this lower part 2A, and an appropriate number of through holes 2A1 are provided in the lower part 2A to communicate the inside and outside of the pile body 2. This is a multi-purpose pile for breakwater fish reefs and fish nests.

In this case, the outer periphery of the two-way part has an outward direction of &-1 approximately an inverted U.
An appropriate number of wave-cutting protrusions having a letter-like structure can be provided.

Furthermore, an appropriate number of dish-shaped bodies 4 attached to the multi-purpose pile for breakwater reef fish nests as needed include a disk 4B having a circular hole 4A penetrating the pile 1 or 11 in the center of the dish-shaped body. It can be composed of an edge 4C that stands up on the outer periphery of this disk, and seawater inflow holes 4D that are opened at predetermined intervals on this edge.

[Effect] I will explain it along with the effects.

[Embodiments of the invention] Examples will be described with reference to the drawings.

1 is a multi-purpose pile for breakwater reef fish nests of the present invention constructed of concrete or synthetic resin.

Reference numeral 2 denotes a cylindrical pile body, and 3 an underground planting part that is integrally connected to the lower end of the pile main body. is configured in a conical shape, and a threaded protrusion 3B is spirally protruded from the outer peripheral surface.

The pile body 2 has a lower part 2A located directly above the underground planting part 3, and an upper part 2 located above this lower part 2A.
B, and as a matter of course, these are in a hollow state.

Therefore, an appropriate number of through holes 2AI are provided in the lower portion 2A to communicate the inside and outside of the pile body 2.

Note that this lower portion 2A has a thick wall for the sake of strength since the through hole 2A1 is formed therein.

Reference numeral 11 indicates a multi-purpose pile for a breakwater reef fish nest according to another embodiment.

Reference numeral 21 denotes a cylindrical pile body, and 31 denotes an underground planting part that is integrally connected to the lower end of this pile body. has a conical shape, and has a threaded protrusion 3 on the outer circumferential surface.
1B is provided in a spiral manner.

The pile main body 21 consists of a lower part 21A located directly above the underground planting part 3, and an upper part 21B located above this lower part 21A. U-shaped protrusion 21 for cutting off waves. There are four B1 protruding pieces.

Therefore, an appropriate number of through holes 21A1 are provided in the lower portion 2LA to communicate the inside and outside of the pile body 2.

Note that this lower portion 21A has a thick wall for the sake of strength since the through hole 21A1 is formed therein.

Reference numeral 4 denotes an appropriate number of dish-shaped bodies attached to the multi-purpose pile 1 or 11 for breakwater reef fish nests as necessary, and this dish-shaped body is a disk having a circular hole 4A passing through the pile 1 or 11 in the center. 4B, an edge 4C that stands up on the outer periphery of this disk, and seawater inflow holes 4D that are opened at predetermined intervals on this edge.

The structure for attaching the dish-shaped body to the pile 1 or 11 is such that it is fitted into the pile from above and fixed at the upper part of the lower part.

For this fixing, you can use a known adhesive or bolt, or you can also make the plate-shaped body in half from the center and assemble it from the left and right with the pile in the center. can. (Although the illustrated case is a two-tiered one, it is natural that the number can be increased or decreased depending on the situation at the site.) Dimensionally, the following was suitable.

The height of the whole pile 1 is about 20m, the diameter of the pile 1 is about 30cm to 1m, the height of the lower part 2A is about 2m, the height of the part 2B is about 3m, the diameter of the through hole 2A21 is about 5cm to 15cm, the plate The diameter of the shaped body 4 is about 3m.

[Effects of the Invention] Since the present invention is configured as described above, it produces the following effects.

1) As shown in Figure 2, it is planted so that the lower part is located on the seabed and the upper end is located on the sea.

That is, the upper end surface will be submerged into the sea at high tide, and the upper end surface will protrude into the sea at low tide.

When planting, select the required number of plants from front to back, left to right,
Alternatively, they will be poured at predetermined intervals (approximately 4 m) in a staggered manner.

2) At high tide, ocean currents hit the piles and change the flow of seawater from side to side, weakening the force of the waves and, at the same time,
Seawater flows in through the upper opening of the pile body and flows out through the through holes.

In this case, the seawater flow that splits left and right when the waves hit the pile collides with the seawater flow that splits left and right when the waves hit the adjacent pile, further reducing the force of the waves.

Since this seawater contains a lot of oxygen, it can promote the growth of plankton and create new fishing grounds.

Furthermore, when waves hit the pile, since the pile is structured in a cylindrical shape, it can cope with waves caused by winds from the south, north, or from the direction of the striations.

In this case, in the case where the protrusion 21B1 for cutting off waves is provided, the waves can be treated more reliably.

3) The inflowing oxygen-rich seawater and plant and animal plankton flow out near the ocean floor, allowing it to function as a fish reef.

4) Since the vertical projected area of the pile can be large in the sea, this part can be the work of small fish and crustaceans.

5) In the case of a dish-shaped structure, a large horizontal projected area can be formed in the sea, so this part can also be used as a fish nest where seaweed, other small fish, and crustaceans can grow.
When a suitable number of plates are stacked, a chamber is formed, and seaweed, other small fish, and crustaceans settle and multiply in this chamber.

6) Easy and reliable construction even if the seabed is uneven or the seawater is dirty.

7) Confirmation of construction completion can be made at sea.

[Brief explanation of the drawing]

Fig. 1 is a perspective view, Fig. 2 is a vertical sectional view of the same as above, Fig. 3 is a perspective view of another embodiment, Fig. 4 is a longitudinal sectional view of the same as above, and Fig. 5 is a state in which the dish-shaped body is attached. FIG. 6 is a longitudinal sectional view of the same. ],,11. , ,Multi-purpose pile for breakwater reef fish nests, 2. ,Pile body, 3. Underground planting part, 4. Dish body. JP-A-3 132503 (5) JP-A-3 132503 (6)

Claims (1)

[Claims] 1. A threaded protrusion 3B is spirally protruded on the outer peripheral surface of the underground planting part 3 which is integrally connected to the lower end of the cylindrical pile main body 2. The main body 2 consists of a lower part 2A located directly above the underground planting part 3 and an upper part 2B located above this lower part 2A. A multi-purpose pile for breakwater reef fish nests, characterized by having an appropriate number of holes 2A1. 2. Claim 1, wherein an appropriate number of wave-cutting ridges protruding outward from the outer periphery of the upper portion are formed in a roughly U-shape.
Multi-purpose pile for breakwater fish nests as described. 3. An appropriate number of plate-shaped bodies 4 are attached to the multi-purpose pile for breakwater reef fish nests as necessary, and the pile 1 is placed in the center of this plate-shaped body.
Alternatively, a disk 4B having a circular hole 4A penetrating through 11;
3. The multi-purpose pile for breakwater reef fish nests according to claim 1 or claim 2, comprising an edge 4C raised up on the outer periphery of the disc, and seawater inflow holes 4D opened at predetermined intervals on this edge.