JPH04176901A - Construction of artificial skiing ground - Google Patents

Abstract

PURPOSE:To shorten construction period by laying out snow blocks. water- absorped by polymer and frozen in blocks, on heat insulators put on a slope, and cutting off the surface of blocks at joints of which an adhesive is filled to form a snow layer. CONSTITUTION:A refrigerant such as calcium chloride solution, etc., cooled by a heat exchanger 6 inserted into a refrigerant cooler 5 is fed to a slope 1 supported by columns 2, and a matter vaporized by a heater 8 is discharged from a radiating tower 9 into atmosphere. Also, pipe panels 13 for circulating the refrigerant are put on the base panel 10 through heat insulators 12, and snow blocks 14 made of water absorptive polymer and formed by a molding box are layed out over the entire surface of the pipe panels 13. Then adhesive of water absorptive polymer 16 is filled into joints 15 between the blocks 14 and the surface of the blocks 14 is cut off after the blocks are frozen to provide a snow layer 17 whereby a slope A is constructed. Thus a slope easy to slide can be finished.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a construction method for an artificial ski resort.

[Conventional technology] Conventional artificial ski resorts use artificial snow machines to form the slopes, but in the case of artificial ski resorts using this method, the solution is easy, and the outside temperature is low or the air conditioning is turned off. A fully equipped room is required. This increases the cost of equipment and
Operating expenses are high, and maintenance is also difficult.

Recently, water has been absorbed by a water-absorbing Borrimer and turned into a gel-like material, which is then poured onto a slope with freezing pipes, frozen, scraped the surface, and processed into a snow-like shape to create an artificial ski slope. There is a proposal for an artificial slope.

[Problems to be Solved by the Invention] However, the method of constructing an artificial ski resort using a water-absorbing polymer constructed in this manner has the following problems.

a. Because it is frozen on-site, it will take 1 hour before the ski slopes are ready.
It takes about a week.

b. When it freezes, it is necessary to cover the ski slopes with heat insulating sheets, etc., which is a hassle.

C. Because the water-absorbing polymer flows along the slope of the ski slope, it is necessary to perform necessary damming until it freezes, which takes time and effort to construct and remove.

d. The quality of the ski slope (snow) becomes uneven.

09 Difficult to perform local repairs.

f. Removal is time consuming.

g. Construction costs are high.

The object of the present invention is to avoid the disadvantages mentioned in a to g above.
The purpose of the present invention is to provide a construction method for an artificial ski resort. ′ [Means for solving the problems] The structure of the present invention is as follows.

1. Construct a slope. Lay a heat insulating material on the slope. Lay a cold source that circulates refrigerant on the heat insulating material. Frozen water absorbed by a water-absorbing polymer into blocks in advance on the cold source. By laying the snow blocks that have been manufactured in parallel, by injecting adhesive into the joints of the snow blocks to unify the snow blocks, and by scraping the surface of the snow blocks to form a layer of snow on the surface of the snow blocks. Construction method for artificial ski slopes.

In addition, the method for forming the snow layer is not to shave the snow block, but to crush the ice obtained by absorbing water with dry ice and a water-absorbing polymer and freezing it, and then depositing the mixture on the surface of the snow block. A layer of snow may also be formed.

2. Snow blocks used to construct slopes at artificial ski resorts are made by absorbing water into a water-absorbing polymer and turning it into a gel, which is then placed in a mold and frozen into a certain shape.

The thickness and size of the snow block are not particularly important, but if you consider that it will be produced in a factory and transported to the site for construction, if it is too large, it will be inconvenient to handle.
The optimum width is 0 mm - 600 mm, and the thickness is about 50 mm - 150 mm. However, this size is not limited in the present invention, and the shape is not particularly limited as long as it can be laid without gaps.

The adhesive to be injected into the joints of the snow blocks may be water or water absorbed by a water-absorbing polymer.

Although the thickness of the snow layer formed on the surface of the snow block is arbitrary, the optimal thickness is about 20 mm to 25 mm.

[Example] FIG. 1 shows the entire structure of an artificial ski resort according to the present invention.

1 is a slope, 2 is a column supporting the slope 1, 3 is a floorboard, 4 is a handrail, 5 is a refrigerant cooler, 6 is a heat exchanger inserted in the refrigerant cooler 5, and LN 2 tank lorry
The LN2 transported in step 7 is directly or temporarily stored in a tank, and then is given cold heat to a refrigerant (e.g., calcium chloride solution) in a heat exchanger 6, heated and vaporized in a heater 8, and then released as heat. It is released into the atmosphere from tower 9.

FIG. 4 shows a cross section of the slope 1, which is
A base 10 in which a heat insulating material 12 is laid on a floor plate 3 on a joist 11
A pipe panel (cold heat source) 13 through which the refrigerant sent out from the refrigerant cooler 5 circulates is constructed on the entire surface, and on top of this a pipe panel (cold heat source) 13 is formed using a formwork using a water-absorbing polymer as a raw material.
A snow block 14 with a diameter of 70 mm and a thickness of 70 mm is laid over the entire surface, and an adhesive 15 made from a water-absorbing polymer is injected into the seam 15 of the snow block 14.
5, the surface of the snow block 14 was removed by 20+ m, and a snow layer 17 was formed to form slope A.

Note that a cold air outlet 18 that absorbs the cold heat of the refrigerant is provided at the top of the slope 1 (slope A), and a suction port 19 is provided at the bottom to cool the surface of the snow layer 17. It prevents it from unraveling.

[Effects of the Invention] As described above, the present invention forms snow blocks by placing raw materials in which water has been absorbed into a water-absorbing polymer in advance into a mold and freezing them, and the snow blocks are transported to the site to construct a ski slope. I decided to do so.

As a result, the following effects can be expected.

a. Snow blocks can be produced in large quantities in advance at a freezing factory and stored in a frozen warehouse, so the snow blocks are brought to the site, lined up, adhesive is injected into the joints, and the surface is scraped. All you have to do is create a layer of snow.

For this reason, the slope can be completed in about 1/10 of the time compared to construction using conventional water-absorbing polymers, so it is effective in shortening the construction period when applied to short-term events.

b. There is no need to cover the slope with a heat insulating sheet when constructing it.

C1 Because the ski slopes are constructed by laying snow blocks of uniform quality, the ski slopes are easy to slip and are in good condition.

d. If repairs are to be made locally, simply replace the snow block in that area.

e. The slope can be divided into snow blocks, so
Easy to withdraw. Therefore, it is ideal for short-term events.

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the entire artificial ski resort, Figure 2 is an enlarged diagram of part A, Figure 3 is an enlarged diagram of part B, Figure 4 is a sectional view of the slope, and Figure 5 is the finished state. It is a sectional view of a slope. 1... Slope 2... Support 3... Floor board
4... Handrail 5... Refrigerant cooler 6.
・・Heat exchanger 7・Tank truck 8・Heater 9
...Radiation tower 10...Foundation 11...Joist
12...Insulating material 13...Pipe panel 1
4... Snow block 15... Seam 16
... Adhesive material 17 ... Snow layer 18 ... Cold air outlet 19 ... Inlet Patent applicant Tokyo Kasu Engineering Link Co., Ltd. I4m

Claims (1)

[Claims] 1. Constructing a slope; Laying a heat insulating material on the slope; Laying a cold heat source in which a refrigerant circulates on the heat insulating material; A water-absorbing polymer absorbs water on the cold heat source. By freezing snow blocks in advance into blocks and laying them side by side, by injecting adhesive into the joints of the snow blocks to integrate them together, by scraping the surface of the snow blocks to create a layer of snow on the surface of the snow blocks. A method of constructing an artificial ski resort that forms a ski slope. 2. The artificial ski resort according to claim 1, wherein the ice obtained by absorbing and freezing dry ice and a water-absorbing polymer is crushed and the mixture is piled on the surface of a snow block to form a snow layer. Construction method. 3. The method of constructing an artificial ski resort according to claim 1, further comprising constructing a cold air outlet for blowing cold air along the slope of the ski slope. 4. Snow blocks used to construct slopes at artificial ski resorts are made by absorbing water into a water-absorbing polymer and turning it into a gel, which is then placed in a mold and frozen into a certain shape.