JPH0627401B2 - Multipurpose pile for breakwater fish reef - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a multipurpose pile for a breakwater reef fish nest.

[Prior Art] Conventionally, this kind of thing is as follows.

1) Using a sinking type wave-dissipating block such as Tetrapot (trademark).

2) Those using floating reefs.

3) Upright revetment of gentle slope type and slit type.

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

1) Due to the structure in which a large number of concrete wave-dissipating blocks are stacked, the installation site occupies a large area of the seabed where the marine resources grow.

2) The salt damage caused by the splashing waves caused by the waves will cause the revetment itself to collapse.

The present application has been made in view of such problems of the conventional technology, and an object of the present application is to provide a device capable of solving the above problems.

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

On the outer peripheral surface of the underground planting portion 3 integrally connected to the lower end of the cylindrical pile body 2, screw-shaped protrusions 3B are spirally formed, and the pile body 2 is embedded in the underground planting portion. 3, a lower portion 2A located immediately above the lower portion 2A and an upper portion 2B located above the lower portion 2A. An appropriate number of through holes 2A1 for communicating the inside and outside of the pile body 2 are formed in the lower portion 2A. It is a multi-purpose pile for nesting of breakwater reefs.

In this case, on the outer periphery of the upper portion, a suitable number of ridges for wave draining, which are formed in a substantially inverted U-shape, can be provided outwardly.

Further, an appropriate number of plate-shaped bodies 4 mounted on the multipurpose pile for wave nests are located at the center of the plate-shaped body 1 or 1.
The disk 4B may have a circular hole 4A penetrating therethrough 1, an edge 4C standing upright on the outer circumference of the disk, and a seawater inflow hole 4D formed at a predetermined interval on the edge.

[Operation] The effect will be described.

Embodiments of the Invention Embodiments will be described with reference to the drawings.

Reference numeral 1 is a multipurpose pile for wave nest fish reef fish nests of the present invention constituted of concrete or synthetic resin.

Reference numeral 2 is a cylindrical pile body, 3 is an underground planting portion integrally connected to the lower end of the pile body, and the underground planting portion 3 is formed into a solid columnar shape and has a lowermost end 3A. Has a conical shape, and a thread-like protrusion 3B is provided in a spiral shape on the outer peripheral surface.

The pile body 2 includes a lower portion 2A located directly above the underground planting portion 3 and an upper portion 2 located above the lower portion 2A.
And B, which are naturally hollow.

Therefore, an appropriate number of through holes 2A1 that communicate the inside and outside of the pile body 2 are formed in the lower portion 2A.

The lower portion 2A is thick because it has a strength because the through hole 2A1 is formed.

11 is a multipurpose pile for a nest of a breakwater reef according to another embodiment.

Reference numeral 21 is a cylindrical pile body, 31 is an underground planting portion integrally connected to the lower end of the pile body, and this underground planting portion 31 is formed into a solid columnar shape and has a lowermost end 31A. Has a conical shape and has a thread 3 on the outer peripheral surface.
1B is projected in a spiral shape.

The pile main body 21 is composed of a lower portion 21A located immediately above the underground planting portion 3 and an upper portion 21B located above the lower portion 21A, and the outer periphery of the upper portion 21B is directed outwardly. Four ridges 21B1 for wave draining, which are configured in an inverted U shape, are provided in a protruding manner.

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

The lower portion 21A is thick because it has a through hole 21A1.

Numeral 4 is an appropriate number of plate-shaped bodies which are mounted on the multipurpose pile 1 or 11 for wave break reefs according to need. 4B, an edge 4C standing upright on the outer periphery of the disk, and a seawater inflow hole 4D opened at a predetermined interval on the edge.

The attachment structure of the dish-shaped body to the pile 1 or 11 is fitted into the pile from above and is fixed at the upper portion of the lower portion.

For this fixing, known adhesives or bolts may be used, or the dish-shaped body may be manufactured in half from the center and assembled from the left and right centering around the pile. it can. (In the case shown in the figure, the number of stages is two, but it is not limited to this and it is natural that the number may be increased or decreased depending on the situation at the site.) Dimensionally, the following were preferable.

Pile 1 height about 20m, pile 1 diameter 30cm-1m, lower part 2A height 2m, upper part 2B height 13m, through hole 2A21 diameter 5cm-15cm, dish 4 The diameter is about 3m.

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

1) As shown in Fig. 2, the lower part is located on the seabed and the upper end is located on the sea.

That is, the upper end surface is submerged in the sea at high tide, and the upper end surface projects to the sea at low tide.

And, in this planting, the required number of plants will be placed in the front, rear, left and right (or in a staggered manner) at a predetermined interval (about 4 m).

2) At high tide, the ocean current hits the pile and changes the flow of seawater in the left-right direction, weakening the force of the wave and
Seawater flows in through the upper opening of the pile body and out through the through hole.

In this case, the flow of seawater that hits the pile and splits left and right collides with the flow of seawater that splits left and right by striking adjacent piles, further reducing the force of the waves.

Since this seawater contains a large amount of oxygen, it can promote the reproduction of plant and plant plankton and form new fishing grounds.

Further, when the wave hits the pile, the pile is formed in a columnar shape, so that the wind can cope with waves caused by south wind, north wind, and wind from other directions.

In this case, if the protruding strip 21B1 for draining the wave is provided so as to project, the wave is processed more reliably.

3) The inflowing oxygen-rich seawater and flora and fauna plankton will flow out near the seabed, so they can act as fish reefs.

4) A large vertical projection area of piles can be formed in the sea, so this part can be used as a nest for small fish and crustaceans.

5) In the case where the plate-shaped body is provided, since a large horizontal projection area can be formed in the sea, it is possible to form a fish nest where seaweeds, other small fish and crustaceans increase in this part as well.
When a suitable number of the plate-shaped bodies are stacked, a room is formed, so that seaweed, other small fish, and crustaceans settle in this room and multiply.

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

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

[Brief description of drawings]

 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 vertical sectional view of the same, and FIG. FIG. 6 is a vertical sectional view of the above. 1,11 …… Multipurpose pile for wave nests, 2 …… Pile body, 3 …… Underground planting section, 4 …… Plate-like body.

Claims (3)

[Claims] 1. A spiral threaded protrusion 3B is provided on the outer peripheral surface of an underground planting portion 3 which is integrally connected to the lower end of a cylindrical pile main body 2, and the pile main body 2 is Underground planting section 3
A lower portion 2A located immediately above the lower portion 2A and an upper portion 2B located above the lower portion 2A.
A multipurpose pile for a wave nest, which has a proper number of through holes 2A1 communicating between the inside and outside of the pile main body 2. 2. The sea bream reef fish nest according to claim 1, wherein an appropriate number of ridges for wave draining which are formed in a substantially inverted U shape outwardly are provided on the outer periphery of the upper portion. Multipurpose pile. 3. An appropriate number of dish-shaped bodies 4 mounted on a multipurpose pile for wave nests, a disc 4B having a circular hole 4A penetrating the pile 1 or 11 at the center of the dish-shaped body. 3. The multipurpose pile for a wave nest of fish reef according to claim 1 or 2, comprising a rim 4C standing upright on the outer periphery of the disk and a seawater inflow hole 4D opened at a predetermined interval on the rim.