JPH09125338A - Wave suppressing device and method, and mooring structure and method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress small waves efficiently by connecting wave suppressing plates with many holes to each other, arranging them in series, and mooring them to a main mooring cable tensed in water using an auxiliary mooring cable. SOLUTION: Many holes 11 are drilled at a prescribed hole opening rate in wave suppressing plates 10 made of a material lighter than water, for example, FRP plate, two holes 12 are drilled each at both end parts, and an endless connecting rope is passed through these holes 12 and a part of it is passed through a part of an other ring so as to fix the rope to the wave suppressing plate 10. Also a rope connected to the end part of the adjacent wave suppressing plates 10 is connected to a detachable connecting clamp so as to connect these wave suppressing plates 10. Then a first main mooring cable 31 is tensed at a proper depth in water, and its end part is fixed by an anchor. In addition, two upper ends of a Y-shaped auxiliary mooring cable 32 and the endless connecting rope connected to both ends of the wave suppressing plate 10 are connected to each other with a detachable connecting clamp, and the lower end of the Y-shaped auxiliary mooring cable 32 is connected to the first main mooring cable 31 with a detachable mooring clamp.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a wave breaking device and method provided in a river or lake where waves are relatively small, and a mooring structure and method of the wave breaking device.

[0002]

2. Description of the Related Art A wave canceling device of this type is provided, for example, along the outside of a course for canoe racing and rowing, and prevents waves generated by the wind from hitting the race course. Wave breakers are often installed over long distances. After the race, the wave breaker will be removed.

Since the conventional wave-dissipating device requires one set of mooring devices for one unit, its installation, removal,
It took a lot of time to store it.

[0004]

DISCLOSURE OF THE INVENTION The present invention provides a wave canceling device and method suitable for canceling relatively small waves, which can be installed over a relatively long distance, and is easy to install, remove and store, and a mooring device and method thereof. It is provided.

In the wave breaking device according to the present invention, a plurality of wave breaking plate-like floating bodies each having a plurality of holes are connected to each other in a movable state, and moored in a state of floating above the water surface to be broken. It is profitable.

In the wave-dissipating method according to the present invention, a plurality of wave-dissipating plate-like floats each having a plurality of holes are movably connected to each other, and moored in a state of floating them above the water surface to be wave-dissipated. To do.

When the wave-dissipating plate-like floating body is made of a material lighter than water, it floats in water by itself. When the wave-dissipating plate-like floating body is made of a heavy material, it is advisable to provide a float to the wave-dissipating plate-like floating body.

A plurality (preferably a large number) of wave-dissipating plate-like floats
Has a hole in it. Waves are launched into this plate-shaped floating body, and in particular, the waves disappear due to friction with the open holes.

Since the wave-dissipating plate-like floating body is a plate-like body (may have some unevenness or a convex portion due to a float or the like), it is easy to handle, which facilitates installation, removal, and storage. . Further, since a plurality of wave-dissipating plate-shaped floating bodies can be connected in a state in which they can move, a plurality of wave-dissipating plate-shaped floating bodies can be arranged in a straight line.

The present invention also provides a wave-eliminating device including the above-mentioned wave-eliminating plate-like floating body. A large number of holes are made in the wave-dissipating plate-like floating body, and the total area of these holes is 5 to 20% of the area of the wave-dissipating plate-like floating body.

The wave-dissipating plate-like floating body is preferably constructed so as to be connectable by utilizing the above-mentioned hole or by another hole or the like.

As described above, the wave-dissipating effect is obtained by the friction when the waves pass through the holes formed in the plate-like body. If the porosity of the hole becomes too large, the wave will pass through the hole and the wave-dissipating effect will be reduced. According to the experiment, the preferable range of the open area ratio is 5 to 20%.

The shape of the holes is arbitrary, such as circular, rectangular, and slit-like.

The present invention further provides a mooring structure and method suitable for mooring the above-mentioned wave-dissipating plate-like floating body to the water surface.

In the mooring structure of the wave breaking device according to the present invention, the first main mooring line is stretched straight in the water, and the two upper ends of the Y-shaped mooring auxiliary lines are provided with a plurality of holes. Since the lower end of the mooring auxiliary line is connected to both sides of the corrugated plate-like floating body and the lower end of the mooring auxiliary line to the first main mooring line, the wave-dissipating plate-like floating body is almost directly above the water surface of the first main mooring line. It is moored in a floating state.

According to the mooring method of the wave-breaking device of the present invention, the first main mooring line is stretched straight in water, and the two upper ends of the Y-shaped mooring auxiliary lines are provided with a plurality of holes. It is tied to both sides of the plate-like floating body and the lower end of the mooring auxiliary rope is connected to the first
The mooring plate-like floating body is moored in a state of floating above the water surface just above the first main mooring line by being tied to the main mooring line.

Each wave-dissipating plate-like floating body is connected to the first main mooring line by a Y-shaped mooring auxiliary line. Therefore, the first
If only the main mooring line can be stretched, it is possible to install a large number of wave-dissipating plate-like floats continuously and in a straight line over almost the entire length of the first main mooring line (if necessary).

If a detachable mooring metal fitting or a connecting metal fitting (connecting jig) is used, after the first main mooring rope is stretched, or while being stretched, the wave-dissipating plate-like floating body is tied to the first main mooring rope, It is possible to connect the wave-breaking plate-shaped floating bodies to each other.

In a structure in which a large number of wave-dissipating plate-like floating bodies are moored to the first main mooring line, in order to sufficiently withstand the force of a wave acting almost at right angles to the length direction of the first main mooring line. It is advisable to provide a second main mooring line extending in a direction perpendicular to the first main mooring line. This main mooring line is extended in the direction of the waves. It is not always necessary to provide the second main mooring line for each wave-dissipating plate-like floating body, and one or several wave-dissipating plate-like floating bodies may be provided separately.

In this manner, a large number of wave-dissipating plate-shaped floating bodies arranged in a substantially straight line can be securely moored.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2, a wave breaking device includes a wave breaking plate 10. The wave-eliminating plate 10 is a flat plate, for example, a special FRP plate. The wave-eliminating plate 10 has a large number of holes 11
Has been opened.

The wave breaker 10 is preferably made of a material lighter than water. If the material of the wave-breaking plate 10 has a specific gravity of 1 or more, the float may be attached to the side or end of the wave-breaking plate.

Although the circular hole 11 is shown as the hole 11, it has a rectangular shape (triangle, quadrangle, pentagon, other polygon).
May be used, or a slender object such as a slit may be used. The holes 11 can be regularly arranged or irregular.

The wave-eliminating plate 10 is used by floating on the water surface. The main wave-dissipating mechanism is that waves are launched into the floating wave-dissipating plate 10 and break. When the wave-eliminating plate 10 is provided with the holes 11, the wave-eliminating effect is great due to friction. If the aperture ratio of the holes 11 becomes too large, the energy transmission becomes large and the wave-dissipating effect becomes small. Experiments have shown that the total area of all holes 11 should be 5 to 20% of the area of the wave-eliminating plate 10.

In order to connect the plurality of wave-breaking plates 10 in a line, two holes 12 are formed at both ends of the wave-breaking plate 10. An endless connecting rope 21 is passed through these holes 12 and a part of the endless connecting rope 21 is passed through another part of the loop to obtain the rope 21.
Is tied to the wave-eliminating plate 10. The wave-breaking plates 10 are connected by connecting the ropes connected to the ends of the adjacent wave-breaking plates 10 with the detachable connecting metal fittings 22.

In order to moor the wave-breaking plate 10, two holes 13 are formed on both sides of the wave-breaking plate 10. These holes 13
Also, the endless connecting rope 23 is tied.

Referring also to FIG. 3, a first main mooring line (wire rope) 31 is stretched at an appropriate depth position in the water at the place where the wave canceller is to be installed. The end of the first main mooring line 31 may be tied to a land-based fixture (post, winch, etc.) or anchored via a float set floating on the water.

Y-shaped mooring auxiliary rope (wire rope) 32
The two upper ends (which are formed into a ring) and the endless connecting ropes 23 connected to both sides of the wave-eliminating plate 10 are connected by a detachable connecting fitting 34. Y-shaped mooring auxiliary cord 32
The lower end (with a ring formed) of the mooring bracket 33 is removable.
Is connected to the first main mooring line 31 by.

In this way, a large number of mutually connected wave-dissipating plates 10 are moored in a straight line through the Y-shaped mooring auxiliary ropes 32 to the first main mooring ropes 31 stretched in water. It will be.

Therefore, the wave-eliminating device is installed by tensioning (or tensioning) the first main mooring line 31 in a straight line, and the Y-shaped mooring auxiliary line 32 and the metal fittings 33 are attached to the first main mooring line 31. While mooring the wave-eliminating plate 10 to the main mooring line 31 via 34,
It suffices that they are connected to each other using the metal fitting 32.

By installing this wave-eliminating device on the windward side of a course such as a canoe race, waves entering the course can be eliminated.

Although the wave breaking plates 10 are connected to each other in the longitudinal direction, they may be connected to each other in the lateral direction. In this case,
Hole 13 will be for connection and hole 12 will be for mooring. The wave breaker 10 may be square.

The first main mooring line with strong waves or water flow
If it is considered that the mooring by only 31 is not enough, the coupled wave-dissipating plates 10 may be moored laterally (a direction perpendicular to the first main mooring line 31).

A number of wave-breaking plates 10 are placed, and the holes 11 are used in the wave-breaking plate 10 to connect the two ends of the Y-shaped mooring auxiliary rope 41 (for example, as described above, with an endless connecting rope and By connecting fittings). The other end of the Y-shaped mooring auxiliary line 41 is tied to the float set 42. The float set 42 is moored by an anchor 44 through a second main mooring line 43.

The mooring structure of the wave-eliminating plate 10 using the second main mooring cable 43 will be provided on the windward side.

A hole for connecting the Y-shaped auxiliary cord 41 may be provided in the wave-breaking plate 10.

If a joint that can be cut with a force weaker than the tension of the mooring line is provided at an appropriate position of the second main mooring line 43, even if it is cut, the restoration will be easy.

The mooring structure using the second main mooring line has a wave-eliminating plate.
It may be provided on both sides of 10.

[Brief description of the drawings]

FIG. 1 is a plan view of a coupled and moored wave-eliminating plate.

FIG. 2 is a cross-sectional view showing a wave breaking plate and a mooring structure.

FIG. 3 is a perspective view showing the entire mooring structure of the wave-eliminating plate.

[Explanation of symbols] 10 Wave-dissipating plate 11 Hole 31 First main mooring line 32, 41 Y-shaped mooring auxiliary line 42 Float set 43 Second main mooring line

Claims (6)

[Claims] 1. A wave-dissipating device in which a plurality of wave-dissipating plate-shaped floats, each having a plurality of holes, are movably connected to each other and can be moored while floating above the water surface to be wave-dissipated. 2. A wave-dissipating plate-shaped floating body having a large number of holes formed therein, wherein the total area of the holes is 5 to 5 of the area of the wave-dissipating plate-shaped floating body.
Wave breaker that is 20%. 3. A wave-dissipating method in which a plurality of wave-dissipating plate-shaped floats each having a plurality of holes are movably connected to each other and moored while floating on the water surface to be wave-dissipated. 4. A first main mooring line is stretched linearly in water, and two upper ends of Y-shaped mooring auxiliary lines are connected to both sides of a wave-dissipating plate-like floating body having a plurality of holes. , The lower end of the mooring auxiliary line is tied to the first main mooring line, so that the wave-dissipating plate-like floating body is moored in a state of floating above the water surface just above the first main mooring line. The mooring structure of the wave canceller. 5. The wave-breaking plate, wherein a plurality of the wave-breaking plate-like floats are connected to each other in a movable state in the direction of the first main mooring line, and one or a plurality of the wave-breaking plate-like floats are placed. The mooring structure for a wave canceller according to claim 4, wherein the floating body is connected to a second main mooring line extending in a direction perpendicular to the first main mooring line. 6. A first main mooring line is stretched straight in water, and two upper ends of the Y-shaped mooring auxiliary line are connected to both sides of a wave-dissipating plate-like floating body having a plurality of holes. A wave-eliminating device for connecting the lower end of the mooring auxiliary line to the first main mooring line to moor the wave-dissipating plate-like floating body in a state of floating above the water surface just above the first main mooring line. Mooring structure.