JPH0639078A - Slope structure of artificial skiing ground - Google Patents

Abstract

(57) [Abstract] [Title of the Invention] Slope structure of artificial ski resort [Purpose] A slope having an irregular surface of any shape can be formed relatively easily by a simple and inexpensive means.
We will submit a ski slope structure for an artificial ski resort that makes it easy to manage snow-like materials, shortens local construction time, and facilitates maintenance. [Structure] A plurality of flat plate-like floor panel units 1 made of a heat insulating member that forms an uneven surface having a mountain-valley curve shape on the surface are laid and arranged in an appropriate combination on the sloped surface of the slope.
The coating layer 2 and the layer 5 of the artificial snow-like material are uniformly laminated on the uneven surface, and the layer 5 of the artificial snow-like material is inserted through the cooling coil 3 embedded in the layer 5 of the artificial snow-like material. Freeze to a suitable temperature. By changing the arrangement of the floor panel units 1, it is possible to easily form an arbitrary downslope surface into an ideal shape and to form it into an interesting shape.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial ski resort where a floor panel is used to form an uneven surface, and a water-containing granular polymer is sprayed on the surface in a substantially uniform thickness, which is efficient in management production and has a great gliding effect. Regarding the slope structure.

[0002]

2. Description of the Related Art There are various known techniques related to artificial ski resorts. For example, JP-A-62-270181, JP-A-1-293887, and JP-A-2-218 are known.
No. 381 is cited. Further, as a method of manufacturing artificial snow, Japanese Patent Publication No. 27584/1990 and Japanese Patent Publication No. 2-36 / 1990.
There is a technique disclosed in Japanese Patent No. 635.

A method of forming an uneven surface on an artificial ski resort disclosed in Japanese Patent Laid-Open No. 62-270181 is a method of forming an uneven surface between a snow layer placed on the roadbed of the artificial ski resort and the surface of the roadbed. Intervening a large number of flexible mats having water chambers arranged side by side in a ring shape, introducing compressed air and cold air into the space surrounded by the flexible mats, and making the surface of the snow layer uneven. The surface is formed and the snow layer is kept at a low temperature by water or ice in the water chamber cooled by cold air.

The artificial ski resort disclosed in Japanese Unexamined Patent Publication No. 1-293887 aims at forming artificial snow with excellent snow quality at low cost and retaining the artificial snow throughout the season. A heat exchange coil is embedded in the sloping ground to make frozen soil, and artificial snow is sprayed on it, and artificial snow is covered with a canopy.

The artificial ski slope disclosed in Japanese Patent Laid-Open No. 2-218381 is for skiing practice without using artificial snow, and is formed by laminating a slide sheet on a slide slope. The sphere is formed by arranging a large number of spheres that are rotatably fitted on a substrate, and is formed so that a ski comes into contact with the sphere and slides down. In addition, as the sphere, a compound vulcanized rubber mixed with antistatic carbon black is introduced as an example.

In the method for producing artificial snow disclosed in Japanese Patent Publication No. 27584/1990, water and a surface active agent are mixed and agitated, and bubbles of explosive air and / or gas are bubbled to produce artificial snow in a non-frozen state. The specific content of the surfactant and the mixing ratio with water are disclosed.

In the method for manufacturing artificial snow disclosed in Japanese Patent Publication No. 2-36635, water and a water-swelling polymer material are mixed at a maximum water retention capacity or less to form an aqueous gel, and the gel is deaerated and frozen. Artificial snow is produced by using the method, and the specific contents of the water-swellable polymer material and the mixing ratio with water are disclosed.

[0008]

OBJECTS OF THE INVENTION: Problems to be Solved by the Invention Although each of the above-mentioned known techniques has its own characteristics, it has the following problems.

The one disclosed in Japanese Patent Laid-Open No. 62-270181 can form irregularities on the surface of the snow layer with a flexible mat, but it is extremely difficult to form the irregularities into a desired shape. . That is, the uneven shape on the surface of the snow layer changes depending on the selection of the flexible mat into which compressed air is introduced, and it requires a technique for the selection and it is structurally difficult to obtain the desired uneven shape. Further, a device for introducing compressed air or cold air into the void of the flexible mat and a device for introducing water into the water chamber are required, resulting in high equipment cost. Also, the flexible mat itself is expensive. Furthermore, there is a problem that replacement of the flexible mat and maintenance work are difficult to perform, and a lot of work time is required.

The method disclosed in Japanese Patent Laid-Open No. 1-293887 does not first form unevenness on the glide surface. If the uneven surface is to be formed, the sloping ground itself must be formed into a predetermined uneven shape. Therefore, the uneven shape must be specified, and the uneven surface must be formed by on-site construction. Further, since a cooling pipe is embedded in the frozen soil and a canopy is provided in order to prevent the frozen soil from being thawed, there is a problem that the facility cost becomes large and it is difficult to easily change the shape once constructed. .

As disclosed in Japanese Patent Laid-Open No. 2-218381, a sphere is adopted instead of artificial snow as described above, and the feeling during downhill is different from that of artificial snow. Very unsatisfactory. Further, it is difficult to form the downhill surface unevenly because of the structure. In addition, the sphere and the ski that contacts it are easily damaged, and replacement of the sphere is practically difficult. Further, there is a problem that the downhill substrate itself in which a large number of spheres are arranged is expensive.

Japanese Patent Publication Nos. 27527/1990 and 36635/1990 disclose methods for manufacturing artificial snow as described above, and are not directly related to the slope structure of the present invention, which will be described in detail later. Absent. However, as the artificial snow-like material used in the present invention, those of the above-mentioned known technique can also be applied. However, the present invention does not limit the use of the same artificial snow as those of the disclosed techniques.

Since conventional artificial snow is composed of ordinary water frozen, it is easily hardened by use, and when hardened, it takes a lot of time and labor to restore the desired skid surface. There is a problem.

The present invention solves the above-mentioned problems, and can form an uneven surface of any shape by a simple and inexpensive means, which makes it possible to entertain an advanced skier and manage snow quality. The slope structure of an artificial ski slope is easy to perform, the construction time and maintenance time are shortened, the shape of the uneven surface once formed can be changed relatively easily, and it is easy to level up when hardening the downhill surface. The purpose is to provide.

[0015]

In order to achieve the above object, the present invention is a flat plate-shaped heat insulating member laid on the slope of a slope, and the surface of the heat insulating member has curved unevenness of peaks and valleys. A floor panel unit having a surface, a coating layer and an artificial snow-like material laminated on the surface of the floor panel unit, and a cooling coil embedded in the artificial snow-like material and communicating with a cold supply source are provided. The above-mentioned artificial ski resort comprises a ski slope structure, specifically, the ski slope is composed of a number of the above-mentioned floor panel units laid down, and the adjacent floor panel units have different floors on their concave or convex sides. The concave or convex sides of the panel units are adjacent to each other, the adjacent portions are arranged in a smooth curved surface, and the floor panel unit is formed of the same or different concave and convex surface shapes. Further, the artificial snow-like material is characterized in that a granular polymer having water adhering and / or adsorbing water on the surface and / or inside thereof is sprinkled in a substantially equal thickness. Further, polymer particles having fine ice adhered only to the surface and solid or voids inside are also included in the above-mentioned claims.

[0016]

The slideway having an irregular surface of an arbitrary shape is formed by appropriately combining a large number of flat plate floor mat units each having an irregular surface on the surface and laying them on the sloped surface. By laminating the artificial snow-like material on the downhill with a uniform thickness, the uneven surface having the above-mentioned shape is formed on the surface of the artificial snow-like material. The artificial snow-like material is cooled by a cooling coil embedded in it. On the other hand, when a special water-absorbing polymer containing water adhering to and / or adsorbing water is used as the artificial snow-like material, the polymer is evenly dispersed on the floor mat unit and cooled by a cooling coil. A thick frozen layer can be formed. By changing the shape of the concavo-convex surface of the floor mat unit and changing the arrangement, it is possible to obtain an arbitrary and various concavo-convex gliding surface. In addition, since the laminated thickness of the artificial snow-like material can be made uniform, there is no partial snow melting or the like due to the uneven thickness, and snow quality management can be easily performed. Furthermore, since the artificial snow-like material is a granular polymer, it can be easily ground. In addition, since the floor mat unit is a portable one and is brought to the site by a truck, etc., the time required for the slope construction work can be shortened. Moreover, its maintenance is easy. Further, the floor panel unit is made of a heat insulating material and can be easily manufactured. In addition, the coating process is relatively easy.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. First, an outline of the overall structure of this embodiment will be described with reference to FIG. The floor mat unit 1 having the uneven surface 6 formed on its surface is made of a flat heat insulating plate, and has a width of 2 [m],
The width is 4 [m] and the thickness is about 100 [mm]. The concavo-convex surface 6 is formed by a curve having arbitrary peaks and valleys. The curve shape is experimentally and empirically determined. The coating process is performed on the uneven surface 6. In this embodiment, the coating layer 2 made of polyethylene is formed.
An artificial snow-like material 5 is laminated on the coating layer 2.
The layer thickness t of the artificial snow-like material 5 is formed uniformly. In this embodiment, a special water-absorbing polymer containing water is used as the artificial snow-like material 5. As the special water-absorbent polymer, for example, a spherical body of a cross-linked acrylate polymer having an extremely small diameter (0.02 mm to 0.5 mm) is used. The special water-absorbent polymer is formed by spraying a gelled mixture of water on the coating layer 2 and adhering it to the coating layer 2. The cooling coil 3 is embedded in the artificial snow-like material 5, and the cooling coil 3 is connected to the coolant supply source 4. The coolant supply source 4 supplies a coolant into the cooling coil 3 to cool the inside of the cooling pipe 4. As the refrigerant, for example, brine such as ethylene glycol is used. The cooling coil 3 is kept at a low temperature by the freezing circulation and cools the artificial snow-like material 5. Since the artificial snow-like material 5 has a uniform layer thickness, it is uniformly cooled by the cooling coil 3. Further, as the cooling coil 3, for example, an ice mat system used in an ice skating rink or the like is adopted as an example.

Next, the detailed structure of the floor panel unit 1 will be described with reference to FIGS. As shown in FIG. 2, an uneven surface 6 is formed on the surface of the floor panel unit 1 to form peaks and valleys in the vertical direction (A to B). For convenience of explanation, the uneven surface of the central portion of the floor panel unit 1 in the width direction is shown by the uneven curve 6a as shown in FIG. 3, and the uneven surface of the portion close to the side surface of the width is shown in FIG. As shown by the uneven curve 6b (6c), the peaks and valleys of the uneven curve 6a are formed higher (deeper) than the peaks and valleys of the uneven curve 6b (6c). The height a of the entire peripheral edge of the floor panel unit 1 is constant, and is formed to about 100 mm as described above. Next, when the floor panel unit 1 is traversed at the positions of the GG line and the HH line in FIG. 2, the formation as shown in FIGS. 5 and 6 is obtained. At the position of GG line, the floor panel unit 1 has a convex convex curve 6 forming the highest mountain in the center.
d is formed, and a concave curve 6e having a concave shape in which the center forms the deepest valley at the position of the line H to H is formed. As described above, the floor panel unit 1 is formed of the mountain-valley curve in which the uneven curves 6a, 6b, 6c, the convex curve 6d, and the concave curve 6e are mixed. The peak-valley curve can be easily formed to have an arbitrary contour.

Next, FIG. 7 shows an embodiment in which the floor panel unit 1 having the curved shape is laid on the sloped surface 7 (FIG. 8) of the slope. As shown in the figure, four floor panel units 1 are arranged in the vertical direction from A to B. In this case, the adjacent floor panel units 1 are AB, AB,
The valleys and the peaks are arranged adjacent to each other like A to B and A to B. Next, as shown in the figure, four rows of floor panel units 1 are arranged side by side in the horizontal direction. In this case, the floor panel units 1 adjacent to the floor panel units 1 in the first row are arranged such that the directions of the peaks and valleys are opposite to each other. Similarly, the second and third rows and the third and fourth rows are also arranged with their peaks and valleys in opposite directions. FIG. 8 is a view of FIG. 7 seen from the direction of the arrow J, and as shown in the drawing, a smooth curve downhill curve 8 formed of ridges and valleys is formed. FIG. 9 is a view of FIG. 9 seen from the direction of the arrow K, and a smooth curve downhill curve 9 composed of valleys and valleys is formed. That is, on the inclined surface 7, a composite downhill surface composed of a combination of downhill curves 8 and 9 is formed. An artificial snow-like material 5 having a uniform layer thickness t (FIG. 1) on the composite downhill surface.
By laminating the above, a slideway surface that is substantially the same as the composite slideway surface is formed on the surface of the artificial snow-like material 5.

A brine such as ethylene glycol cooled to about -20 ° C. is circulated in the cooling coil 3 embedded in the artificial snow-like material 5 having a cross-sectional shape as shown in FIG. Thus, the artificial snow-like material 5 is frozen, and the artificial snow-like material 5 applicable to downhill can be formed. In addition, as described above, the floor panel unit 1
Since it is formed from a light weight flat plate-shaped heat insulating member of about 2 [m] × 4 [m] × 100 [mm], it can be transported to the field by a truck or the like. In addition, by stacking them with the peaks and valleys reversed, a substantially flat box-like shape is obtained, which is not bulky in terms of transportation and is unlikely to cause load collapse. Furthermore, the floor panel unit 1 can be manufactured by using a large number of resin molds having the same shape.

FIG. 10 shows another embodiment of the slope structure showing a complex downhill curve different from that of FIG. In this case, the floor panel units 1a, 1b, 1c, 1d, etc. which come into contact with each other are different in the shape of the uneven surface. Thereby, a slope structure having a more complicated downhill surface can be obtained.

In the above structure, the downhill surface is shown in the figure, but of course it is not limited thereto. Also,
A special water-absorbing polymer is adopted for the artificial snow-like material 5, but the invention is not limited to this. Further, the size of the floor panel unit 1 and the like, the direction of the arrangement, and the combination are not limited to those in the above embodiment.

[0023]

According to the present invention, the following remarkable effects are obtained. (1) By changing the shape of the uneven surface of the floor panel unit and the method of arranging the uneven surface, a desired downhill surface can be easily formed. (2) The slope can be formed relatively easily and in a short time because the slope can be formed by laying the floor panel unit and laminating the artificial snow-like material to a substantially uniform thickness. Can be done. (3) The artificial snow-like material can be frozen in a desired snow quality by the cooling coil embedded therein. (4) The floor panel unit is lightweight and has excellent portability,
Moreover, it can be mass-produced and can be formed at low cost. (5) The artificial snow-like material of the structure of the present invention is mainly composed of organic particulate matter, so that it is less likely to be compacted like conventional artificial snow, and adheres to each other with a small amount of ice on the surface of the particulate matter. The power required for shaving is much smaller than the required characteristics, and it is easily performed. Therefore, the downslope surface can be easily leveled and corrected in a short time. (6) Since the artificial snow-like material is uniformly laminated and no partial change in the snow quality occurs, the snow quality can be easily managed. (7) The shape of the existing slope structure can be changed by replacing the floor panel unit. Further, since the floor panel unit can be easily replaced, maintenance can be easily performed. (8) Since the floor panel unit is made of a heat insulating material and subjected to waterproof coating, heat transfer and water absorption are prevented, and the snow quality of the artificial snow-like material is accurately controlled. In particular,
The slope, which uses fine particles of ice on the surface and uses polymer particles with voids inside, maintains elasticity, so unlike conventional artificial snow layers, it also has the excellent effect of giving the skier the feeling of fresh snow for a long time.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a ski slope structure according to an embodiment of the present invention.

FIG. 2 is a perspective view of a floor panel unit applied to the embodiment.

3 is a cross-sectional view taken along the line EE of FIG.

FIG. 4 is a sectional view taken along line FF in FIG.

5 is a sectional view taken along line GG in FIG.

6 is a sectional view taken along line HH of FIG.

FIG. 7 is a perspective view showing an embodiment of a slope structure formed by arranging floor panel units of the embodiment.

FIG. 8 is a side view of the arrow J in FIG.

9 is a front view taken along the arrow K in FIG.

FIG. 10 is a side view showing a downhill surface of a slope structure formed by arranging floor panel units of another shape according to the present invention.

[Explanation of symbols]

 1 floor panel unit 1a floor panel unit 1b floor panel unit 1c floor panel unit 1d floor panel unit 2 coating 3 cooling coil 4 coolant supply source 5 artificial snow-like material 6 uneven curve 6a uneven curve 6b uneven curve 6c uneven curve 6d convex curve 6e Convex curve 7 Inclined surface 8 Downhill curve 9 Downhill curve

Claims (4)

[Claims] 1. A flat panel heat insulating member laid on a sloped surface of a slope, wherein a floor panel unit having a curved uneven surface of peaks and valleys formed on the surface thereof, and a surface of the floor panel unit. An artificial ski slope structure, comprising: a laminated coating layer and an artificial snow-like material; and a cooling coil embedded in the artificial snow-like material and communicating with a coolant supply source. 2. A plurality of floor panel units are laid on an inclined surface of a slope, and each floor panel unit has a concave side or a convex side adjacent to a concave side or a convex side of another floor panel unit. The ski structure of artificial ski surface according to claim 1, wherein the adjacent portions are arranged with a smooth curved surface. 3. The artificial ski resort according to claim 1 or 2, wherein the artificial snow-like material is a granular polymer having water adhering and / or adsorbing water on the surface and / or inside thereof, which are dispersed in substantially equal thickness. Slope structure. 4. The artificial ski resort according to claim 1, wherein the adjacent floor panel units are different in uneven surface shape, and the adjacent portions are arranged in a smooth curved surface. Slope structure.