JPH0742453Y2 - Snow melting prevention structure at ski resort - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a snow melting prevention structure for reducing melting of snow due to geothermal heat in a ski resort.

[Problems to be solved by conventional techniques and devices] Ski resorts include natural ski resorts that use natural snowfall, and so-called artificial ski resorts where artificial snow is used to spray artificial snow on the slopes. At any of the ski resorts, the heat of the ground makes it easy for the accumulated snow to melt. It is estimated that the extent of snow melting due to this geothermal heat is more than double that of solar heat and outside temperature. Even in regions with relatively high geothermal power and regions with low geothermal power, the amount of snowmelt due to this geothermal heat is large in early winter and early spring. This makes it difficult to secure snowfall suitable for skiing, and at artificial ski resorts, it is necessary to frequently spray supplemental artificial snow,
This causes a problem that the burden of maintenance costs increases. Also, trying to avoid this will force the ski resort to shorten in business hours.

Therefore, it becomes necessary to cut off the geothermal heat and reduce the amount of snowmelt. Therefore, it is conceivable to lay, for example, a tatami mat or a muscillo as a heat insulating material between the ground and the snow. However, in this case, so-called snow-melting water generated by melting the snow is absorbed by the tatami mat and the muscillo. Since water easily transfers heat, the snow melting water reduces the heat insulation effect of tatami mats and muscillo, transfers the geothermal heat upward, and melts the snow.

Further, these tatami mats and muscillo are easily corroded by long-term use.

Furthermore, even if a large, inflexible member such as a tatami mat is laid on a ski resort with a lot of undulations, or a lightweight muscillo is laid on the slope of a ski resort, it can be easily moved by an external impact. .

[Means for Solving the Problems] In order to solve the above various problems in the present invention,
The following measures were taken.

That is, the snow melting prevention structure for a ski resort according to claim 1,
A structure in which a plate-shaped synthetic resin foam is laid in both vertical and horizontal directions on the ground, a water-permeable synthetic resin protective material is laid on it, and a sliding mat is laid on it. It is characterized in that the resin-made protective material is a container in which synthetic resin foam particles are housed in a synthetic resin bag.

In the snow melting prevention structure for a ski resort according to claim 2, a plate-shaped synthetic resin foam is laid on the ground in both vertical and horizontal directions, and a water-permeable synthetic resin protective material is laid on the foamed synthetic resin foam. The sliding mat is laid, and the protective material made of synthetic resin is a non-foamed plate made of synthetic resin.

[Operation] In the snow melting prevention structure for a ski resort according to claim 1, it is known that the synthetic resin foam has excellent heat insulating properties.
By making this foam into a plate shape and laying it on the ground, it blocks the transfer of geothermal heat to the snow. Further, the snowmelt water quickly penetrates into the ground through the joint between the adjacent foams. Thereby, the snow melting water does not reduce the heat insulating effect of the foam and the foam particles.

Furthermore, since this synthetic resin protective material has water permeability,
It does not retain water in it and does not reduce the heat insulating effect of the foam.

Furthermore, since both the foam and the protective material are made of synthetic resin, they have excellent corrosion resistance. This allows them to be used semi-permanently.

Further, by laying the sliding mat on the synthetic resin protective material, the synthetic resin protective material is stabilized. Therefore, it is not easily moved by an external impact.

Also, by laying a synthetic resin protective material on the foam, shut off the local pressure from the tip of the stock,
The foam is not damaged.

Further, if the synthetic resin foam particles are stored in a bag and the storage body is laid on the foam body, the effect of blocking geothermal heat is further enhanced. Further, the storage body allows water to pass through. As a result, the snowmelt water passes through the container and quickly penetrates into the ground through the foam. Therefore, the snowmelt water does not reduce the heat insulating effect of the foam and the foam particles.

Further, as in the structure according to claim 2, if a plate-shaped body made of a synthetic resin is laid on the foam, even if the plate-shaped body receives a local pressure from the stock, the whole plate-shaped body is The pressure is relieved by being dispersed in.

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. In FIG. 1 and FIG. 2, G is the ground of the slope in the ski area. Reference numeral 12 is, for example, a styrofoam plate having a length of 90 cm, a width of 90 cm, and a thickness of 5 cm, which is laid on the ground G in both the vertical and horizontal directions. 16 is a synthetic resin bag 15
It is a protective storage body in which a large number of foam particles 14 are stored. The protective container 16 acts as a protective material for the synthetic resin foam laid on the ground. A large number of protective storage bodies 16 are prepared and laid out on the styrofoam plate 10. Further, a sliding mat 20 made of synthetic resin, the upper surface of which is formed as a ski sliding surface, is laid on the protective storage body 16. The Styrofoam plate 10, the container 16 and the sliding mat 20 constitute the snow melting prevention structure of the present invention. S is snow.

As the expanded particles 14, pre-expanded polystyrene particles expanded 30 to 50 times are used. Further, the bag 15 has water permeability by being formed of synthetic fiber woven fabric, knitted fabric, or the like. Then, the protective storage body 16 is
For example, the size is about 50 cm in length and width and 20 cm in thickness. The bag 15 may be a bag obtained by sewing a synthetic resin porous sheet into a bag.

The sliding mat 20 is composed of a synthetic resin mat structure 17. As shown in FIG. 4, the structural body 17 has a substantially square ring shape with a side of ten and several centimeters in a plan view, and has a thickness of 2 to 3 centimeters. Further, on the upper surface of the structure 17, a large number of thin rod-shaped projections 18 having a diameter of 2 to 3 cm extend upward. Further, T-shaped engaging portions 19a are provided on the outer edges of a pair of facing corners of the structural body 17 so as to project outward. In addition, engaging holes 19b that engage with the T-shaped engaging portions 19a are provided inwardly at the outer edges of another pair of facing corners of the mat structure 17.
The T-shaped engaging portion 19a of one mat component 17 is engaged with the engaging hole 19b of another mat component 17 adjacent thereto, and these components 17 are sequentially connected vertically and horizontally. In this way, the connected body of the mat structure 17 is formed into a predetermined size,
This is used as the sliding mat 20. In addition, although the mat forming body 17 constituting the sliding mat 20 has a planar quadrangular shape, it is not limited to this, and a circular shape may be used.

The Styrofoam plate 10 laid on the ground G blocks the conduction of ground heat to the snow S. Due to this, snow S due to geothermal heat
To prevent melting. Further, the protective storage body 16 storing the synthetic resin foam particles 14 further enhances the effect of blocking the geothermal heat.

Further, the snowmelt water passes through the protection container 16 and quickly penetrates into the ground through the joint of the styrofoam plate 10.
As a result, the snowmelt water reduces the heat insulating effect of the foam and the foam particles, and the geothermal heat is not conducted upward.

As shown in the figure, the foam 10 may have drainage holes 12 penetrating in the thickness direction at predetermined intervals.
In this case, the snowmelt water quickly penetrates into the ground through the drain holes 12. Therefore, the snowmelt water can be removed more effectively.

Further, the protective container 16 is obtained by filling a large number of foam particles 14 in a bag 15, and the foam particles 14 can flow in the bag 15. It Therefore, even if the protective container 16 receives a local pressure due to the stock, the foamed granules 14 that have received this force flow and relieve the received pressure. This can prevent the stock from damaging the Styrofoam plate 10.

Further, by laying the sliding mat 20 on the protective container 16, the protective container 16 and the synthetic resin foam 10 are stabilized. Therefore, it is not easily moved by an external impact.

Note that gravel may be laid on the ground G in order to accelerate drainage of the snowmelt water.

Further, in the present embodiment, as the synthetic resin protective material, the protective storage body 16 in which the synthetic resin foam particles 14 are stored in the synthetic resin bag 15 is used. However, instead of this protective container 16,
For example, a non-foamed synthetic resin plate 24 having a length and width of 50 cm and a thickness of 5 cm may be used. In this case, the local pressure from the stock is distributed throughout the plate 24 so that the foam 10 is not damaged by the stock. Further, since the snowmelt water is excluded from the joint with the adjacent plate 24, the snowmelt water does not reduce the heat insulating effect of the foam 10.

As shown in FIG. 3, when the plate 24 is provided with drain holes 22 penetrating in the thickness direction at predetermined intervals, the snow melting water can be effectively eliminated.

In addition, all the embodiments belonging to the scope of claims for utility model are within the scope of the present invention.

[Advantage of the Invention] In the snow melting prevention structure for a ski resort according to claim 1, the synthetic resin foam laid on the ground can prevent snow melting due to geothermal heat.

Further, the snowmelt water quickly penetrates into the ground through the seam of the foam. Thereby, the snow melting water does not reduce the heat insulating property of the foam.

Furthermore, since both the foam and the protective material are made of synthetic resin, they can be used semipermanently.

In addition, the sliding mat stabilizes the synthetic resin protective material and the synthetic resin foam, and they do not easily move due to an external impact.

Further, by laying a synthetic resin protective material on the foam, the stock does not damage the foam.

Further, if a protective container containing synthetic resin foam particles in a synthetic resin bag is laid on the foam, the effect of blocking geothermal heat is further enhanced.

If a non-foamed synthetic resin plate-like body is used as the synthetic resin protective material as in the snow melting prevention structure of the ski resort according to the second aspect, the protective material can be manufactured at low cost and is easy to handle.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention, and FIG.
FIG. 3 is an enlarged sectional view of an essential part, and FIG. 3 is a perspective view showing another embodiment.
FIG. 4 is an enlarged plan view of the mat structure. G: Ground, 10: Synthetic resin foam, 14: Foamed particles, 15
...... Bag, 16 …… Storage unit, 20 …… Sliding mat, 24 …… Synthetic resin plate.

Front page continued (72) Inventor Kiyoji Shinohara 2-6-3 Otemachi, Chiyoda-ku, Tokyo Within Nippon Steel Corporation (72) Inventor Motoaki Miyazaki 4-9-7 Megurohonmachi, Meguro-ku, Tokyo (72) Inventor Hiroyasu Ogata 2-6-1, Namiki, Kanazawa-ku, Yokohama, Kanagawa 402 (72) Inventor Yoshikatsu Tani 2-16-8, Yuyamadai, Kawanishi-shi, Hyogo (56) Reference: JP-A-61 -162604 (JP, A) Japanese Patent Publication Sho 56-52594 (JP, B2)

Claims (2)

[Scope of utility model registration request] 1. A ski resort in which a plate-shaped synthetic resin foam is laid on the ground in both vertical and horizontal directions, water-permeable synthetic resin protective material is laid on this, and a sliding mat is laid on this. The snow melting prevention structure for a ski resort, wherein the protective material made of synthetic resin is a container in which foamed synthetic resin particles are contained in a bag made of synthetic resin. 2. A ski resort in which a plate-shaped synthetic resin foam is laid on the ground in both vertical and horizontal directions, water-permeable synthetic resin protective material is laid on this, and a sliding mat is laid on this. 2. The snow melting prevention structure for a ski resort, wherein the synthetic resin protective material is a non-foamed synthetic resin plate.