JPH0716738Y2 - Non-penetrating gentle slope revetment block - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] This project relates to non-penetrating gently sloping revetment blocks. More specifically, it protects coasts and beaches at coastal conservation facilities, harbor facilities, fishing port facilities, etc. The present invention relates to a safe and hydrophilic non-penetrating gently sloping revetment block for covering the uppermost layer such as a gently sloping revetment used for maintenance.

[0002]

2. Description of the Related Art Heretofore, in this type, the following has been done. 1) There is a gap in the block that allows waves to penetrate into the ground,
The penetration of the waves from here reduces the wave energy. 2) The upper surface of the block is flat or simple, and is easy to walk, but the energy of the wave is reduced mainly by making the slope of the slope gentle. 3) Although there is a non-penetrable block, the shape of the space between the floor part and the upper part is a straight line and has a constant width.

[0003]

The problems described in the prior art have the following problems. 1) When waves travel up or down the block through the voids in the block, a pressure difference is generated between the upper and lower parts of the block, and sand or the like in the lower part of the block is sucked out and often sinks. 2) Since the shape of the top surface of the block is simple, the waves move more evenly on the block, resulting in less energy loss, higher run-up of waves, higher reflectance, and weaker wave launch prevention function. , The front of the seawall was also easily scourd, and the stability of the block was hindered. 3) Even in a non-penetrable block, energy loss is small because it flows linearly through the space between the floor and the upper part.

The present application has been made in view of the above problems of the prior art, and an object of the present application is to provide the following. 1) The blocks and the gaps between the blocks are minimized to prevent sand and the like from being sucked from the bottom surface of the blocks. 2) In order to further reduce the energy of the waves when the waves run up and down, the block top surface has an obstruction, and the flow due to the waves causes the flow between the block top surface and the floor / bottom part of the block. By using a two-layer structure that flows through the space of the block, the function of reducing the wave energy by allowing waves to permeate to the lower surface of the block through the gap of the conventional block was given to the upper structure of the block. 3) The flow that moves up and down in the space between the floor part and the upper part of the block is forced to be zigzag or expanded or contracted by the column of the block. It has the function of reducing wave energy.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention is as follows. That is, the one according to the present application has a flat rectangular shape, and the parallel upper and lower surfaces 1A1 and 1A2 are inclined surfaces with respect to the horizontal surface 1B with a lower front and a higher rear. A column-shaped column portion 1C is planted, and a disc-shaped upper plate portion 1D is stretched in a horizontal state on the upper surface of this column-shaped column portion, which is a non-penetrating gently sloping revetment block.

[0006]

EXAMPLES Examples will be described with reference to the drawings. No. 1 is the non-penetrating gently sloping revetment block of the present invention, the structure of which is as follows. 1A is a plane rectangular parallelepiped and parallel upper and lower surfaces 1A
1, 1A2 is a floor part configured as an inclined surface in which the front is low and the rear is high with respect to the horizontal plane 1B, and a columnar pillar 1C is planted in the center of the upper surface of the floor. A disc-shaped upper plate 1D is stretched in a horizontal state on the upper surface of the columnar column. In this case, the side wall portions 1A3 of the floorboard portion are vertically arranged. Further, the diameter of the upper board portion 1D and the length of each side of the floor board portion are configured to have substantially the same size. The following dimensions are suitable. Floor base 1A length of one side ~ 130.0 cm, floor base 1A thickness ~ 30.0 cm, upper floor diameter ~ 130.0 cm, non-penetrating gently sloping revetment block 1 front height ~ 86.0
cm, height of rear surface of non-penetrating gently sloping bank 1 ~ 60.0
cm.

The present invention operates as follows. 1) When a wave hits the revetment, the energy of the wave is lost due to the resistance of the pillar 1C as it travels up the upper board 1D and moves through the space sandwiched by the pillar 1C. 2) As for the wave running up on the upper board 1D, the energy of the wave is further lost due to the difference in the level of the upper board 1D of the adjacent blocks on the front and rear of the slope, so the running height of the wave is extremely small. 3) When the wave flows down, energy is lost as the flow falls due to the difference in the level of the upper board 1D, and the wave passes through the space between the floor and the upper board of the block. Energy is further lost due to the resistance of the portion 1C.
For this reason, the force of the drawn wave is weakened and the reflected wave becomes small, so that the interaction with the next incoming wave is unlikely to occur on the block, and the spreading wave does not occur, so the block is stable,
It also reduces scour on the front.

[0008]

Since the present invention is constructed as described above, it has the following effects. 1) Since the floor part 1A has a square shape, when arranged, there are no voids and no sand is sucked out. 2) Since the upper surface of the upper board 1D is stepped, energy is lost each time a wave passes. 3) When flowing between the pillar portions 1C, energy is lost due to the resistance of the pillar portion 1C. 4) Since the upper part 1D is closer to the horizontal than the slope of the ground, it is easy to walk.

[Brief description of drawings]

FIG. 1 is a front view of a non-penetrating, gently sloping revetment block of the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a right side view of the above.

FIG. 4 is a side view of the above.

FIG. 5 is a perspective view of the same attachment state as above.

[Explanation of symbols]

 1 Non-penetration type gentle slope revetment block 1A Floor part 1A1 Upper surface 1A2 Lower surface 1A3 Side wall part 1B Horizontal surface 1C Support part 1D Upper part

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tetsumi Takahashi 1-3-4, Hiragishi, Toyohira-ku, Sapporo-shi, Hokkaido Inside the Civil Engineering Research Institute, Hokkaido Development Bureau (72) Ei Ozawa Kita-ku, Kita-ku, Sapporo-shi, Hokkaido West 8-8 West Cold Port Research Center (72) Creator Fujio Hoshi 2-8 North Kita-ku, Sapporo-shi, Hokkaido West 8-8 Cold Research Center

Claims (1)

[Scope of utility model registration request] 1. A floorboard section (1) having a flat rectangular shape and having parallel upper and lower surfaces (1A1, 1A2) formed as an inclined surface having a lower front and a higher rear with respect to a horizontal plane (1B).
A columnar strut portion (1C) is planted on the upper surface of A), and a disc-shaped upper disc portion (1D) is stretched in a horizontal state on the upper surface of the columnar strut portion. Non-penetrating type gentle slope revetment block.