JP2860783B2 - Artificial snow materials and artificial ski facilities - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial snow material and an artificial ski area which enable sports or play, such as skiing or sled, to be performed on snow in an area or season where the amount of snow is zero or small. About facilities.

[0002]

2. Description of the Related Art Conventionally, as an artificial ski resort facility, snow has been artificially snowed using a snowfall machine or the like, or crushed ice particles have been scattered to deposit snow or the like in places where natural snow cover cannot be expected. In addition, skiing and other slidable areas, that is, slopes, are being implemented. However, there is a restriction that the outside air temperature must be lower than a predetermined temperature in order to operate the snowfall machine. Therefore, the method using this snowfall machine,
In the case of Japan, it is implemented at ski resorts on the Pacific Ocean side with high altitudes where there is little snowfall, with the aim of eliminating the lack of natural snowfall and opening early in winter. Also, in the summer of Japan, it is impossible to pile snow and ice particles outdoors using a snowfall machine, etc., so that air conditioners etc. are operated to create a simulated winter environment indoors. Snow and ice are piled up. However, there is a disadvantage in that cooling a building accommodating a slope having a size of, for example, several thousands to tens of thousands of square meters requires an enormous amount of energy such as electric power.

Therefore, artificial ski resorts have been implemented in which artificial turf is laid on a slope such as a mountain in place of snow so that skiing is possible regardless of the season. In addition, a slope or a turtle shell-shaped ring member is connected to the inclined surface and laid in a mat shape to form a slope.

[0004]

However, artificial turf and ring members are disadvantageous in that they are polyethylene petroleum products and are expensive. In addition, in order to lay artificial grass and a ring member, the inclined surface has to be made flat at the time of construction, and there is a disadvantage that the construction cost increases. Further, there is a disadvantage that maintenance such as periodic removal of weeds growing from the cavity of the ring member is required. Furthermore, there is a danger that the skier may be burned by the frictional heat with the artificial turf or mat when falling, or the fingers may be damaged.

[0005] In particular, in the method of laying artificial turf, the skin of the artificial turf is reduced due to edging during skiing (squaring of edges provided on both sides of the ski body during rotation). There was a drawback that it was scraped off and good sliding properties could only be obtained for a few years after construction. In addition, there is a problem that the shaved skin floats in the air, accumulates on the ground, or dissolves in rivers and lakes, causing environmental pollution. So recently,
Artificial turf whose skin had been removed was left unusable or artificial turf was used to encourage snow accumulation at the beginning of natural snowfall.

[0006] In the case of a slope made of artificial turf, unlike a case of natural snow, edging or the like at the time of a turning operation is different from a skiing athlete or a ski expert who competes for a required time for a predetermined course. There was also a drawback that satisfactory gliding properties could not be obtained. That is, as shown in FIG. 4, the rotation of the ski includes a turn that deviates from a so-called cutting turn (a carving turn), as shown in FIG. 4A is a side curve 11 of the ski 1 with the edge 10 (see FIG. 5) of the ski 1 biting into the snow surface (so-called squaring).
Is used to draw an arc of rotation, and the ski 1 advances so as to be in contact with the arc of rotation. On the other hand, in the turn shown by the broken line in FIG. 4B, the extent of the edge 10 that cuts into the snow surface is weakened or hardly cut while catching the snow surface on the entire sliding surface (back surface) 12 of the ski 1. Since the tail portion 13 of the ski 1 passes outside the rotating arc, the rotating arc expands. Competitive skiers and advanced skiers generally prefer skis that can cut, but when skiing on an artificial turf, the skis can fall on the fall line (a virtual link between high and low points on the piste). The line turns around with a downward shift. In addition, there is also a drawback that soil and the like under the artificial turf flow out due to rainwater and the like, and a small swell is generated on the artificial turf, so-called a phenomenon that an edge is caught occurs, and a skier falls down.

[0007] The present invention has been made in view of the above circumstances,
An object of the present invention is to provide an inexpensive and easily available artificial snow material as snow material for an artificial ski resort in an area or a season where the amount of snow is zero or small. Another object of the present invention is to obtain the same sliding properties as a slope made of natural snow in an area or season where the snowfall is zero or small, and furthermore, the material cost, construction and maintenance costs are low, and environmental pollution is reduced. It is to provide artificial skiing facilities that are not caused to cause.

[0008]

In order to achieve the above object, the present inventors have found that lime made from limestone is hard to return to its original state once hardened, but animal calcium carbonate such as powder is added with water. Focusing on the characteristics of animal calcium carbonate, which can maintain an appropriate hardness and easily return to the original powder etc. when the water runs out, crush the oyster shell that has been disposed of finely, The present inventors thought that a slope having excellent sliding properties could be obtained by spraying the pulp instead of snow, and made intensive studies to complete the present invention.

According to the first aspect of the present invention, there is provided an artificial snow material comprising a oyster shell, a shell, a biological bone, or a combination thereof as a raw material, and a powder or granule obtained by crushing the raw material. Or, it is characterized by consisting of small pieces, oyster shells, shells or bones of living things are abundant, so it is easy to obtain raw materials, it is inexpensive and also useful for resource saving. is there. Also, as a result of research, it has been found that, by spraying the artificial snow material on a slope and spraying water, it is possible to obtain a good slope state in which snow is appropriately pressed.

[0010] Specifically, in the invention of claim 1 ,
Oyster crushed as in the invention described in claim 2
Is characterized in that the shell has a thickness of 0.1 mm to 2 mm . The reason why the thickness of the artificial snow material is 0.1 mm to 2 mm is that if it is less than 0.1 mm, there is a possibility of melting, spilling or scattering, and if it exceeds 2 mm, the small pieces become large and visually scary to skiers etc. This is because it may give a heart.
Further, when the thickness of the artificial snow material is 0.1 mm to 1 mm, there is an advantage that the material is densely deposited and hardly collapses.
When it is 0.5 mm to 0.5 mm, there is an advantage that the water retention becomes high.

According to the second aspect of the present invention, as in the third aspect of the present invention, crushed oyster shells are provided.
Has a length in the longitudinal direction of 0.1 mm to 5 mm . The length of artificial snow material in the longitudinal direction is 0.1mm
The reason for the thickness is about 5 mm is that if it is less than 0.1 mm, there is a possibility of melt, runoff or scattering, and if it is more than 5 mm, small pieces are felt by skiers and the like, and a fear of falling is generated. The length of the artificial snow material in the longitudinal direction is 0.1
If the thickness is from mm to 3 mm, there is an advantage that the powder is deposited in a planar manner and the sliding property is enhanced, and if it is from 0.1 mm to 1 mm, there is an advantage that a powder snow feeling can be obtained.

According to a fourth aspect of the present invention, there is provided an artificial skiing facility, wherein an artificial snow layer made of the artificial snow material according to any one of the first to third aspects is provided on a surface layer. A good slope condition with moderate snow compaction can be obtained by including moisture.If so-called bumps are formed and the slope becomes rough, it is only necessary to level the ground with a snow compaction vehicle in the same way as natural snow slope maintenance, artificial snow The material is powdery, granular or small, with calcium as the main component, so it is excellent in shock absorption when falling and safe, and it has excellent sliding properties, so it can freely turn off and off. Things.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. The present invention
It is characterized by using oyster husks as raw materials and finely crushing them as artificial snow material to be sprayed on the slopes of artificial ski resort facilities.

The main composition of the oyster shell is calcium carbonate 45
~ 86%, nitrogen 0.1 ~ 0.8%, phosphoric acid 0.1 ~ 0.
8%, potassium 0.1-0.2% and magnesium oxide 0.4-0.7%, but typically 86% calcium carbonate, 0.3% nitrogen, 0.3% phosphoric acid, potassium 0.
2% and magnesium oxide 0.7%. The characteristic of oyster shells is that when crushed, the skin becomes smaller as if the epidermis peels off. FIG. 1 shows a plan view of an example of an artificial snow material 2 made of oyster shells after crushing. FIG.
As shown in (1), the crushed oyster shell, that is, the artificial snow material 2, becomes a powder (granules or small pieces depending on the size) like the oyster shell before crushing.

The length of the artificial snow material 2 in the longitudinal direction is 0.1 mm.
５5 mm is appropriate. The reason is that if the length of the artificial snow material 2 in the longitudinal direction is less than 0.1 mm, there is a possibility of melting, spilling and scattering, and if it exceeds 5 mm, small pieces are felt by skiers and the like, and fear of falling Because it comes out. Further, the length of the artificial snow material 2 in the longitudinal direction is preferably 0.1 mm to 3 mm, and more preferably 0.1 mm to 1 mm. The reason is that if the length of the artificial snow material 2 in the longitudinal direction is 0.1 mm to 3 mm, there is an advantage that the snow accumulates flatly and the sliding property is enhanced, and if it is 0.1 mm to 1 mm, the powder snow This is because there is an advantage that a feeling can be obtained.

The thickness of the artificial snow material 2 is suitably from 0.1 mm to 2 mm. The reason is that if the thickness of the artificial snow material 2 is less than 0.1 mm, there is a possibility of melting, spilling or scattering, and if it is more than 2 mm, the small pieces become large and may give a fear to skiers visually. Because there is. In addition, artificial snow material 2
Is preferably 0.1 mm to 1 mm, more preferably 0.1 mm to 0.5 mm. The reason is that if the thickness of the artificial snow material 2 is 0.5 mm to 1 mm, there is an advantage that it is densely deposited and hardly collapses, and furthermore, 0.1 mm to 0.5 mm
This is because there is an advantage that the water retention becomes higher.

If a large amount of the artificial snow material 2 having the shape, size and thickness as described above is scattered on a slope, and the ground is leveled and water is contained by watering or the like, even if the water is drained, FIG.
As shown in FIG. 2, the artificial snow material 2 is stacked in layers in the vertical (vertical) direction (only four layers are shown in FIG. 2), and is densely spread without gaps in the horizontal (left and right) directions. It becomes such a structure. Moreover, as in the brickwork structure, the boundary position between the artificial snow materials 2 and 2 adjacent to each other on the left and right is different between the upper and lower layers, and the structure is substantially staggered. Then, the state of the slope is close to the compact snow state of the natural snow slope.

In such a snow compact state, FIG.
As shown in (A), when pressure from above due to edging or the like during rotation of the ski is applied to the artificial snow layer 3 on which the artificial snow material 2 is laminated, as shown in FIG. The concave portion 30 is formed by deforming so that only the portion near the pressed portion is depressed. In general, when substantially spherical particles such as sand are deposited, the particles around the pressurized portion rotate and interact with each other, and are largely collapsed. The reason for this is that since the shape is a dish shape and the laminated structure is a brick-layered structure as described above, rotation as in the case of sand does not occur. Then, the rotation is performed such that the edge 10 of the ski 1 bites into the concave portion 30 of the artificial snow layer 3. That is, a turn to be cut is performed. It should be noted that the angle of the ski 1 with respect to the artificial snow layer 3 is made gentle to weaken the squaring, thereby making it possible to perform a deviating turn.

Further, as described above, since the artificial snow layer 3 is deformed so as to be depressed by pressurization from above, even when the skier falls, the artificial snow layer 3 is deformed to absorb and absorb the impact. Is safe.

When the artificial snow material 2 is scattered on a slope to construct an artificial ski resort, for example, as shown in FIG.
A base material 5 is laid on an inclined surface of a mountain 4 or the like, and an artificial snow material 2 is scattered on the base material 5 to form an artificial snow layer 3. The thickness of the artificial snow layer 3 is set to an optimum thickness according to the inclination angle and the type of the base material 5. 5 ° tilt angle to horizontal
Braking area less than 5 °, 15 ° or more
Assuming that the thicknesses of the artificial snow layer 3 on a gentle slope of less than 15 degrees, a middle slope of 15 degrees or more and less than 25 degrees, and a steep slope of 25 degrees or more are t1, t2, t3, and t4, respectively, Is a waterproof sheet having only a function of preventing the erosion of the earth and sand on the inclined surface due to running water, for example, t
1 is at least 10 cm, t2 is at least 10 cm to 20 cm, t
3 is at least 10 cm to 20 cm, and t4 is 20 cm or more. When the base material 5 is an artificial turf or the like, for example, t1 is 10 cm or more, t2 is at least 10 cm to 20 cm,
t3 is at least 20 cm to 30 cm, and t4 is 30 cm or more. When the base material 5 is a shock absorbing material having a cushioning property such as a sponge, for example, t1 is 5 cm or more, and t2
Is 5 cm or more, t3 is 5 cm or more, and t4 is 10 cm or more. Further, when a bump is formed on a steep slope, t4 is at least 30 cm to 50 cm. The above t1, t2, t
The values of 3 and t4 are determined in consideration of the gliding property and safety at the time of falling.

The maintenance of this artificial ski resort facility is as follows:
Sprinkling on a daily basis is sufficient. If a large number of people slide and the slopes become rough, they can easily return to their original condition by leveling with a general snow plow.

According to the above embodiment, since the artificial snow material 2 uses oyster husk as a raw material, it is easy to obtain and pulverize it, and it is possible to obtain the effect of being inexpensive and contributing to resource saving. Further, since the size of the artificial snow material 2 is such that it does not float in the air and does not dissolve in water, an effect of preventing environmental pollution can be obtained. Furthermore, since the artificial snow material 2 is resistant to ultraviolet rays and does not discolor or rot, the initial performance and aesthetic appearance can be maintained for a long period of time. Furthermore, the artificial snow layer 3 is well drained, and the effect of preventing collapse as in an avalanche can be obtained.

Further, in the artificial ski resort facility of the above-described embodiment, a good slope condition in which snow is appropriately pressed can be obtained, and in the case where bumps are formed and the slope is rough, it is only necessary to level the ground with a snow plow. It can be easily returned to the original state. Furthermore, it is possible to obtain an effect that it is excellent in shock absorbing property at the time of falling and is safe, and also excellent in sliding property, so that the turning and the turning can be freely made. Base material 5
Is provided, it is possible to prevent the artificial snow material 2 from being mixed into earth and sand on an inclined surface such as a mountain or the occurrence of landslides due to rainfall or the like.

In the above embodiment, the oyster shell is used as a raw material. However, the present invention is not limited to this. Other shells or bones of living organisms may be used as the raw material, or the same or substantially the same as the oyster shell. A plurality of compounds and the like may be mixed and pulverized so as to have the same component. In the above embodiment, the thickness of the artificial snow material is 0.1 mm to 2 mm, preferably 0.1 mm to 2 mm.
1 mm, more preferably 0.1 mm to 0.5 mm, and the length in the longitudinal direction of the artificial snow material is 0.1 mm to 5 mm, preferably 0.1 mm to 3 mm, more preferably 0.1 mm to 1 mm. However, various artificial snow materials may be mixed within a range of a thickness of 0.1 mm to 2 mm and a length of 0.1 mm to 5 mm in a longitudinal direction. In this case, the phenomenon that large snow material accumulates on the surface layer of the artificial snow layer just by spraying water, and a small artificial snow material gradually accumulates from the middle layer to the lower layer occurs, and the advantage that gliding performance can be maintained higher. is there.

The artificial snow material 2 can of course be applied to various facilities other than the artificial ski resort facilities.

Further, in the present specification, the artificial ski resort facility includes a slope for sledging. In the above embodiment,
An artificial snow layer is formed by laying a base material on an inclined surface such as a mountain and laying an artificial snow material on the base material, but an appropriate amount of artificial snow material is laid on bare soil or natural grass as it is. You may.

[0027]

According to the first aspect of the present invention, a powdered body obtained by pulverizing the artificial snow material from oyster shells, shells, biological bones or a combination thereof is used as a raw material. , Because it is composed of granules or small pieces, it is easy to obtain raw materials, it is inexpensive and also helps to save resources,
Further, by spraying the artificial snow material on a slope and spraying water, it is possible to obtain a good slope state in which snow is appropriately pressed.

According to the second aspect of the present invention, pulverization of
Since the thickness of the oyster shell, which is a 0.1mm~2mm, soluble
This eliminates the inconvenience that water , spills and splashes, and small pieces may become large, giving a skier or the like a visual fear . When the thickness is 0.1 mm to 1 mm, there is an advantage that it is densely deposited and hardly collapses.
When it is 0.5 mm to 0.5 mm, there is an advantage that the water retention becomes high.

According to the third aspect of the present invention, the pulverized
The length of the oyster shell in the longitudinal direction is 0.1mm to 5mm
Therefore , the inconvenience that the small pieces are felt large by a skier or the like due to the possibility of the water being melted , washed away or scattered, and the fear of falling when falling is eliminated . When the thickness is 0.1 mm to 3 mm, there is an advantage that the powder is deposited in a planar manner and the sliding property is improved, and when the thickness is 0.1 mm to 1 mm, there is an advantage that a powder snow feeling can be obtained.

According to the fourth aspect of the present invention, the artificial ski resort has an artificial snow layer made of the artificial snow material according to any one of the first to third aspects provided on a surface layer. In addition, by adding moisture, it is possible to obtain a good slope condition in which the snow is moderately pressed, and when the bumps are formed and the slope becomes rough, it can be easily returned to the original condition simply by leveling with a snow plow. In addition, since the artificial snow material is in the form of powder, granules or small pieces containing calcium as a main component, it is excellent in shock absorption when falling and is safe, and also has excellent sliding properties, so that the turning and shifting turns can be made freely. The effect is obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an example of an artificial snow material according to the present invention.

FIG. 2 is a longitudinal sectional view of an artificial snow layer using the artificial snow material. FIG. 2 (A) shows a flat state, and FIG. 2 (B) shows a deformed state when pressure is applied by the edge of a ski. .

FIG. 3 is a longitudinal sectional view of the artificial ski resort facility according to the present invention.

FIG. 4 is a schematic diagram illustrating a state when the ski is rotating.

FIG. 5A is a schematic plan view of a ski,
FIG. 6B is a sectional view taken along line BB shown in FIG.

[Explanation of symbols]

 2 Artificial snow material 3 Artificial snow layer 5 Base material

Claims (4)

(57) [Claims] An artificial snow material comprising oyster shells, shells, biological bones or a combination thereof as a raw material, and a powder, granules or small pieces obtained by crushing the raw material. . 2. A crushed oyster shell having a thickness of 0.1
The artificial snow material according to claim 1, wherein the thickness is from 2 mm to 2 mm. 3. The artificial snow material according to claim 2, wherein the length of the crushed oyster shell in the longitudinal direction is 0.1 mm to 5 mm. Wherein said claims 1 to artificial ski facility, characterized in that provided an artificial snow layer made of artificial Yukizai according to any one of 3 to the surface layer.