JPH0673911A - Wave making pool - Google Patents

Abstract

PURPOSE:To enhance the enjoyment quality of surfing by installing a mount having a specified height and inclination to a part of a pool bottom wall and turning waves generated with a wave making device into sharp waves which are high in height and rich in long cycle changes. CONSTITUTION:A mount 2 is installed to a part of a pool bottom wall 3 which is slanted upward from the installation side of a wave making device 1 to the end of the other side where the water depth (h) at the top is 1.1 to 1.8 times wave height and ascending inclination theta1 ranges from 1/10 to 1/7 and horizontal length L2 is 1/5 to 3/4 times the wave height and descending inclination theta2 ranges from 1/20 to 1/25. The wave making device 1 raises the wave height H on the water surface 4 and extends the wavelength lambda, thereby producing sharp waves which are rich in variety. This construction serves to make surfing more enjoyable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wave pool mainly used as an artificial surfing ground.

[0002]

2. Description of the Related Art There are few places to surf in the natural environment. In addition, natural conditions such as weather and sea conditions further limit surfing opportunities.
Therefore, there is a demand for an artificial surfing area that can constantly surf. A wave suitable for surfing is usually a wave with a high wave length and a long cycle, and the crest of the wave has a steepness that breaks white, and a wave that breaks sequentially from the end along the crest line is good.

An example of such a surfing place is disclosed in Japanese Patent Laid-Open No. 61-141381. This surfing area is as shown in the plan view of FIG. 2 and its XX cross section in FIG. 2 and 3, 10 is a pool consisting of a rectangular channel, 12 is the bottom wall of the pool, 13 is a wave-making device, 1
4 is a top floor, 15 is a bottom wall above the water surface, 16 is a wave, and 17 is a paddle zone. As shown in FIG. 2 and FIG. 3, the wave making device 13 is at the right end, and the left end is the bottom wall 15 on the water surface.

As shown in FIG. 3, the bottom wall 12 of the pool has a gentle upward slope from the right end where the wave forming device is located to the bottom wall 15 on the water surface at the left end. Due to this upward inclination, the wave 16 generated by the wave forming device is inclined forward, and the wave preferred by the surfer is generated. Although this surfing area is provided with a paddle zone 17 around the central surfing zone, this zone is not always necessary.

Recently, a variety of waves, especially steep waves, have been required to enhance the playability of surfing. The steep wave referred to here will be described with reference to FIG. The wave shape generally forms a sine curve and can be expressed by a wave height H and a wavelength λ shown in FIG. Normal gentle waves mean waves with H / λ of 1/20 or less, but steep waves usually mean waves with H / λ in the range of 1/20 to 1/7, but for surfing In FIG. 4, the wave is steeper as the inclination of the front surface of the wave shown in FIG.

The inventor of the present invention has previously disclosed Japanese Patent Application Laid-Open No. 63-292981.
As disclosed in Japanese Patent Publication, in order to generate a variety of waves, one end of the wave pool is divided into two, and two wave generators are provided.
We proposed a wave-making pool with high playability. The present invention has a similar purpose.

[0007]

In the wave pool where the bottom wall is monotonically shallow, when the water depth is shallower than the wave height, the front surface of the wave becomes steep and the wave collapses, so that a wave-like play is possible. However, in such a pool, the distance from when the wave becomes steep until the wave collapses is short, and therefore the range where the wave-riding play is possible is limited. It is intended to provide a wave-making pool that can make such a range longer.

[0008]

[Means for Solving the Problems]

(1) A wave-making pool having the following structure. (A) A wave-making pool including a wave-generating device that generates waves on one end side of a water channel, and having a bottom wall having an upward inclination from one end side to the other end side of the water channel, The depth of the mound top on a part of the bottom wall is 1.1 to 1.
Eight times the mound is provided.

(2) Further, there is provided a wave pool according to the above (1), which comprises a mound having the following structure. (A) The climb slope toward the other end of the mound is 1/1
0 to 1/7, (b) the horizontal distance of the mound is 1/5 to 1/1 times the wavelength of the wave, and (c) the downward slope of the mound toward the other end is from 1/20. It is 1/25.

[0010]

[Operation] If there is a mound (small hill) on the bottom wall of the wave-making pool, the wave traveling from the wave-making device side will generate a steep wave with high playability due to the action of the mound. In order to proceed beyond the above mounds,
The depth h of the top of the mound needs to be 1.1 to 1.8 times the wave height H. If h is smaller than 1.1 times H, the wave will be broken, and if larger than 1.8 times, the wave will not be steep (claim 1).

The shape of the mound is preferably such that a steep wave generated on the mound stably advances to the other end of the pool. As a result of research on the shape of the mound, the shape described in (2) above is desirable.

That is, the climbing slope of the mound is 1/1
0 to 1/7 is desirable. If the slope is 1/10 or less, the target position of the steep wave is too far from the left end, and 1
This is because the wave generated by the wave making device is not stable at / 7 or more. As a general rule, the horizontal distance of the mound is preferably 1/2 times the wavelength λ, but this length is short when the depth h of the top of the mound is shallow, and is preferably 1/5 times.
This is because when the depth is deep, it is long and 1/1 times better.

Further, the falling gradient of the mound toward the other end side is appropriately 1/20 to 1/25. In this range, the steep wave generated in the horizontal part of the mound smoothly advances toward the bottom wall 5 on the water surface at the other end without changing its shape. The reason for this is that the water depth is sufficiently large with respect to the wave height of the steep wave generated at the top of the mound, so that the wave does not collapse and is maintained for a long time (claim 2).

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A sectional view of a wave pool according to the present invention is shown in FIG. In FIG. 1, 1 is a wave making device, 2 is a mound, 21 is a climbing mound, 22 is a horizontal part of the top of the mound, 23 is a lowering of the mound, 3 is a bottom wall of a wave making pool, 4 is a water surface,
5 is a bottom wall above the water surface.

At the left end of FIG. 1 is provided a wave-making device 1 for generating waves. This wave travels toward the bottom wall 5 on the water surface at the right end. Normally, the depth D at the left end of the pool is set to be about twice the wave height H of the generated wave, for the reason that the wave generated by the wave making device is not broken immediately after the wave making. The wave making device may be a known plunger type or flap type. As an example, D was 2 m and H was 1 m.

The mound 2 in the present invention preferably starts from the left end of the pool. Mound climb 21 slope θ1
As described above, 1/10 to 1/7 is suitable. 10 m was adopted as an example of the horizontal length L1 of this climbing slope.

Depth h from the water surface of the horizontal part 22 of the mound
Is optimally in the range of 1.1 to 1.8 times the wave height H of the wave. When the water becomes shallower, the bottom wall has an effect and the frontal slope of the wave becomes steeper. Therefore, the depth of this horizontal portion requires the above relationship with the wave height H. Also, as mentioned above, L2 increases the steepness of the wave, so in principle the wavelength of 1
/ 2 is suitable, but it is related to the depth of the top of the mound, and a distance of ⅕ to 1/1 times the wavelength λ of the wave is suitable. As an example, for a wave having a wave height H of 1 m and a wavelength of 20 m, L2 was set to 5 m, for example.

Next, the slope θ2 of the mound descending 23 and its horizontal length L3 are also important. The range of θ2 is 1/2
A value of 0 to 1/25 is suitable. This is because in this range, a steep wave generated in the horizontal part of the mound smoothly advances toward the bottom wall 5 on the water surface at the other end without changing its shape. 5 m was adopted as an example of this horizontal length L3.

Finally, the climbing gradient θ3 of the bottom wall 3 adopts the gradient of the conventional wave pool, but the steep waves generated at the mound proceed to the bottom wall 5 on the water surface without changing their shape as much as possible. The most desirable gradient is The range of θ3 is preferably, for example, 1/25 to 1/35. Therefore, when the water depth at the left end of the pool is 2 m, the total pool length is 5
It goes from 0m to 70m.

As a concrete example, L1 is 10 m, L2
Is 5m, L3 is 5m, h is 1.2m, and the wave height H is 0.7m and the wavelength is 20m.
In the mound, the wave height was 1.1m.

Although the plan view of the wave pool of the present invention is not shown, for example, a rectangular water channel may be used, and the shape is not particularly limited. The mound according to the present invention can also be applied to a wave pool having a plurality of water channels, which the inventor of the present invention has already proposed in JP-A-63-292981.

[0022]

The mounding pool with mound of the present invention generates steep waves having a higher playability than conventional wavemaking pools, so that the playability of surfing can be enhanced.

[Brief description of drawings]

FIG. 1 shows an example of a cross-sectional view of a wave pool of the present invention.

FIG. 2 is a plan view of a conventional wave pool.

3 is a cross-sectional view taken along the line XX of the wave pool shown in FIG.

FIG. 4 (a) shows the general shape of a wave, and FIG. 4 (b) shows a steep wave.

[Explanation of symbols]

 1 Wave-making device 2 Mound (small hill) 21 Mound climbing part 22 Mound horizontal part 23 Mound descending part 3 Pool bottom wall 4 Water surface 5 Bottom wall above the water θ1 Mound ascending slope θ2 Mound descending slope θ3 Pool bottom Wall slope L1 Mound horizontal length L2 Mound horizontal length L3 Mound horizontal length D Pool deepest depth H Wave height λ Wavelength h Mound horizontal depth

Claims (2)

[Claims] 1. A wave-making pool having the following structure: (a) A wave-making device for generating waves is provided at one end of a water channel, and the bottom wall is inclined upward from one end of the water channel to the other end thereof. (B) A mound whose depth at the top of the mound is 1.1 to 1.8 times the wave height is provided in a part of the bottom wall (b). 2. The wave pool (a) according to claim 1, wherein the mound has the following structure.
10 to 1/7, (b) the horizontal distance of the mound is 1/5 to 1/1 times the wavelength of the wave, and (c) the downward slope of the mound toward the other end is from 1/20. 1/25
Is.