JPH0526096Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a wave dissipating device for a breakwater, etc., for reducing damage caused by wave spray launched onto a breakwater, etc.

(Prior art) Conventionally, for example, wave-dissipating breakwaters consisting of aggregate blocks formed by heat-sealing synthetic resin linear materials were
This method is known from Japanese Patent No. 55-36518.

(Problem that the invention aims to solve) However, with this structure, the holder is completely filled without leaving any cavities, so the crest of the wave crashes and is absorbed between the linear objects of the wave-dissipating bank, causing wave-dissipation. When this wave crest recedes and the water level at the location where the breakwater is located becomes lower, it takes a small amount of time for the water absorbed between the above linear objects to descend to this lowered water level. If the crest of the next wave hits during that time, the absorbed water that has not descended will reduce the amount of water absorbed by the wave-dissipating levee, and as a result, the wave-dissipating levee will not be able to fully demonstrate its wave-dissipating function. There were problems such as not being able to do so.

(Means for solving the problem) The present invention has a large number of thermoplastic synthetic resin filaments of 1 to 10 mmφ in a permanent wave state, and connects the joining points of these filaments to each other when the filaments are in an unsolidified state. Void solidified as a bond due to the adhesive force of
The main part, which is composed of 65 to 95% three-dimensional net-like aggregates, is filled into the mounting frame for the breakwater, leaving the required number of cavities in the center, and the mounting frame positions these cavities above the water surface and attaches them to the breakwater. The present invention attempts to solve these problems by providing a wave dissipating device for breakwaters, etc., which is attached to breakwaters, etc.

(Example) In the example shown in the figure, thermoplastic synthetic resin filaments 2 with a diameter of 1 to 10 mm are spun out from a large number of downward nozzles 1 of an extruder die, allowed to descend naturally, and the required number of threads are placed between the downward nozzles 1. A fluid 4 such as water, hot water, adhesive liquid, air, etc., which has been given a desired temperature and a required injection speed from a rotatable and reciprocating fluid injection nozzle 3, is maintained in a molten state during the above-mentioned descending process. The fluid 4 injects the fluid 4 intermittently or continuously to intertwine and weld the filaments 2 into a permanent wave, and at the same time, the fluid 4 partially cools or bonds the filaments 2. A three-dimensional network aggregate 7 having a void ratio of 65 to 95% is formed by taking it up by take-up rolls 5, 5' at a slower rate than its descending speed and introducing it into cooling water 6 where it is rapidly cooled and solidified.

Next, a mounting frame 9 for a breakwater 8, etc. was filled with the three-dimensional mesh aggregate 7 as the main body, leaving a cavity 10, and the mounting frame 9 was then mounted to a breakwater, etc. with the cavity 10 positioned above the water surface. It is something.

(Operation and effect of the invention) Since the wave dissipating device of the present invention is as described above,
A large number of filaments made of thermoplastic synthetic resin with a diameter of ~10 mm are made into a permanent wave state, and the joining points of these filaments are bonded to each other by the adhesive force of the filaments in an unsolidified state.The void ratio is 65. Of course, the wave-dissipating effect is achieved by the characteristics of the main part composed of ~95% three-dimensional net-like aggregates, but in particular in this invention, such a main part is placed in the center within the attachment frame to the breakwater. The required number of cavities were left and filled, and the mounting frame was installed on a breakwater, etc., with the cavities located above the water surface, so that when the crest of a wave crashes, it is absorbed between the linear objects of the wave dissipating device and dissipated. When this wave crest recedes and the water level at the location where the wave dissipating device is located becomes low, it takes no time for the water absorbed between the linear objects to fall to this low water level, Therefore, in this wave dissipating device, the water absorption amount is not limited by undesired absorbed water at all, and the present invention can thereby satisfactorily solve the above-mentioned problems. be.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing an embodiment of the present invention, and FIG. 2 is a manufacturing process diagram of a three-dimensional network assembly. DESCRIPTION OF SYMBOLS 1... Downward nozzle, 2... Line, 3... Fluid injection nozzle, 4... Fluid, 5, 5'... Take-up roll, 6... Cooling water, 7... Three-dimensional network aggregate, 8...
...Breakwater, 9...Mounting frame, 10...Cavity.

Claims (1)

[Scope of utility model registration request] A large number of filaments made of thermoplastic synthetic resin with a diameter of 1 to 10 mm are made into a permanent wave state, and the joining points of these filaments are bonded to each other by the adhesive force of the filaments in an unsolidified state. 65-95%
The main part, which is composed of a three-dimensional net-like aggregate, is filled into the mounting frame for the breakwater, leaving the required number of cavities in the center, and the mounting frame is mounted to the breakwater, etc., with the cavities located above the water surface. A wave dissipating device for breakwaters, etc.