JPH0623446B2 - A fish nest that also serves as a breakwater and a fish reef - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a fish nest that also serves as a wave breaker and a fish reef.

[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.

Pile body 2 and umbrella 4 attached to the pile body
The pile main body 2 is formed into a cylindrical shape, the underground planting portion 3 integrally connected to the lower end of the pile main body is formed into a solid cylindrical shape, and the lowermost end 3A is formed into a conical shape. The pile main body 2 has a lower portion 2A located immediately above the underground planting portion 3 and a lower portion 2A of the lower portion 2A. An appropriate number of through holes 2A1 that communicate with the inside and outside of the pile body 2 are formed in the lower part 2A, and an upper part outer peripheral surface 4A1 of the umbrella part 4 has a bowl-like truncated cone shape. An inverted frusto-conical opening 4B is opened from above in the center of the umbrella body 4A configured as described above, and a hole 4C connected to the upper portion 2B is vertically formed at the lower end of this opening,
Further, a proper number of through holes 4B1 are provided between the inner peripheral surface of the opening 4B and the upper outer peripheral surface 4A1 to form a wave nest and a fish reef.

In this case, on the outer periphery of the upper portion 2B, a suitable number of protruding ridges 2B1 for wave draining, which are formed in a substantially inverted U shape toward the outside, can be provided.

Furthermore, an appropriate number of plate-shaped bodies 5 mounted on the pile body 2
Is a disk 5 having a circular hole 5A1 passing through the pile in the center.
A, an edge 5B standing upright on the outer circumference of this disk, and this edge 5
It is composed of a seawater inflow hole 5B1 opened in B at a predetermined interval.

[Operation] The effect will be described.

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

1 is a fish nest of the present invention which is made of concrete or synthetic resin and also serves as a wave breaker and a fish reef.
It is composed of an umbrella portion 4 attached to the pile body.

The pile main body 2 is formed in a cylindrical shape, the underground planting portion 3 integrally connected to the lower end of the pile main body is formed in a solid cylindrical shape, and the lowermost end 3A is formed in a conical shape. ,
On the outer peripheral surface, a ridge 3B having a thread shape is provided so as to protrude in a spiral shape.

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.

Further, four protruding ridges 2B1 for wave draining, which are formed in a substantially inverted U shape, are provided outwardly on the outer periphery of the upper portion 2B.

The umbrella portion 4 has an inverted outer truncated cone-shaped opening 4 from above at the center of the umbrella body 4A whose upper outer peripheral surface 4A1 is formed in a bowl-shaped truncated cone shape.
B is opened, and a hole 4C connected to the upper portion 2B is vertically formed at the lower end of the opening, and further, between the inner peripheral surface of the opening 4B and the upper outer peripheral surface 4A1. An appropriate number of through holes 4B1 are formed in an appropriate number of steps.

Reference numeral 4B2 is a horizontal groove engraved to connect the outer openings of the through holes 4B1.

Note that, as shown in FIGS. 7 and 8, the outer periphery of the upper portion 2B of the pile body 2 may be formed in a cylindrical shape without forming the protrusion 2B1.

Reference numeral 5 denotes an appropriate number of dish-shaped bodies mounted on the pile main body 2. The dish-shaped body has a disc 5A having a circular hole 5A1 penetrating the pile at the center, and an edge 5B standing on the outer periphery of the disc. It is composed of a seawater inflow hole 5B1 opened at a predetermined interval on the edge 5B.

The attachment structure of the dish-shaped body to the pile 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.

The following were suitable in terms of dimensions.

The height of the entire pile 1 is about 20 m, the diameter of the pile 1 is about 30 cm to 1 m, the height of the lower part 2A is about 2 m, the height of the upper part 2B is about 13 m, the diameter of the through hole 2A21 is about 5 cm to 15 cm, and the umbrella part 4 Height about 1.5m, diameter of umbrella 4 about 3m, diameter of dish 5 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, plant the plant so that the lower part is located on the seabed and the upper part is located on the sea.

That is, about 80% of the lower part of the umbrella part is submerged in the sea when the tide is high, and the umbrella part projects above the sea when the tide is low.

Then, in this planting, the required number of plants are laid in the front, rear, left and right (or in a staggered pattern) at a predetermined interval (about 4 m).

2) At high tide, the ocean current hits the pile body and changes the flow of seawater in the left-right direction to weaken the wave force, and at the same time, seawater flows in from the upper opening of the pile body and flows out of the through hole.

In this case, the flow of seawater that hits the pile body and is split left and right collides with the flow of seawater that splits left and right by hitting adjacent piles, and the force of the waves is further reduced.

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 main body, the pile main body is formed into a columnar shape, so that the wind can cope with waves caused by south wind, north wind, and other winds from various directions.

If the pile main body is provided with a protruding strip 2B1 for draining waves, the waves will be processed more reliably.

3) Since the vertical projection area of the pile body can be formed in large amounts in the sea, this portion can be used as a nest for small fish and crustaceans.

4) Since the umbrella portion 4 is provided, when the wave hits the umbrella portion at high tide, it is broken by the umbrella body 4A and flows into the pile body from above the opening 4B, and also the groove 4B.
2. It will flow into the pile body through the through hole 4B1.

As a result, the wave force is weakened, and at the same time, the seawater flowing into the pile body flows out through the lower through hole.

Further, since many shaded portions can be formed in the sea by the umbrella portion 4, this portion can be used as a nest for small fish and crustaceans.

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

6) 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.

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

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

[Brief description of drawings]

 1 is an overall perspective view, FIG. 2 is a vertical sectional view of the same, FIG. 3 is a perspective view of another embodiment, FIG. 4 is a vertical sectional view of the same, FIG. 5 is a perspective view of a pile, 6 is a vertical sectional view of the same, FIG. 7 is a perspective view of another embodiment of the pile, and FIG. 8 is a vertical sectional view of the same. 1 ... Fish nest that also functions as a wave breaker and reef, 2 ... Pile body, 4 ... Umbrella part, 5 ... Plate-shaped body.

Claims (3)

[Claims] 1. A submerged underground plant comprising a pile main body 2 and an umbrella portion 4 attached to the pile main body, the pile main body 2 having a cylindrical shape, and being integrally connected to a lower end of the pile main body. The installation portion 3 is formed in a solid columnar shape, the lowermost end 3A is formed in a conical shape, and the thread-like protrusions 3B are provided in a spiral shape on the outer peripheral surface. It is composed of a lower portion 2A located immediately above the middle planting portion 3 and an upper portion 2B located above the lower portion 2A. The lower portion 2A communicates the inside and outside of the pile body 2 with a through hole 2
A proper number of A1 are opened, and the upper surface 4A1 of the umbrella portion 4 is provided with an inverted frustoconical opening 4B from above in the center of the umbrella body 4A having a bowl-shaped truncated cone shape. A hole 4C connected to the upper portion 2B is vertically formed at the lower end of the opening, and a proper number of through holes 4B1 are formed between the inner peripheral surface of the opening 4B and the upper outer peripheral surface 4A1. A fish nest that also functions as a wave break and a fish reef, which is characterized by being drilled. 2. The outer periphery of the upper portion 2B is substantially inverted U toward the outside.
The fish nest which has both a wave preventive function and a fish reef according to claim 1, wherein an appropriate number of wave-shaped draining ridges 2B1 for projecting water are projected. 3. An appropriate number of dish-shaped bodies 5 mounted on the pile body 2 have a disk 5A having a circular hole 5A1 penetrating the pile at the center, and a rim 5B standing upright on the outer circumference of the disk. 3. The fish nest which also serves as a wave breaker and a fish reef according to claim 1 or 2, which is composed of a seawater inflow hole 5B1 opened at a predetermined interval on the edge 5B.