JPH0617454A - Snow-melting water recovery slope structure - Google Patents

Abstract

PURPOSE:To efficiently recover snow melting water made up of thawing artifi cial ice and snow. CONSTITUTION:A porous film 21 with a lot of permeable holes 21a is laid on the ground 80 to form a slope 20, and water barrier troughs 22 and collecting pipes 23 are installed on the film so as to form a flow of water in the horizontal direction at specified intervals. In succession, sand 40 is spread all over the film 21, the water barrier troughs 22 and the collecting pipes 23 and then a snow-stop block 41 is installed in addition.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a snowmelt water recovery slope suitable for reusing the snowmelt water formed by melting the snow and ice when spraying artificial snow and ice on the ski slope. Regarding the structure.

[0002]

2. Description of the Related Art FIG. 4 is a schematic view showing an example of conventional snowfall equipment. With the recent global warming, the amount of snowfall in winter has decreased, and there has been a shortage of snow at ski resorts in various places.
For this reason, it has been difficult to ski for a short period of time and it is difficult to maintain a good slope. In addition, artificial ski resorts have begun to be built in areas with low snowfall. Therefore, in the past, in order to make up for the lack of snow and to form a slope on an artificial ski resort, ice snow, which is artificial snow, was manufactured and sprayed on the slope. As shown in FIG. 4, for example, the conventional snowfall equipment 1 is composed of an ice making device 12, an ice storage device 11, and an ice carrying device 10. The ice carrying device 10 collects the ice and snow 60 supplied to the ice and snow feeder 3. It has a pipe line 8 for sending pressure to the ice-blowing device 4. That is, the water 61 is supplied to the ice making device 12 by a pump or the like (not shown), the water 61 supplied to the ice making device 12 is manufactured as the ice and snow 60, and the ice and snow 6 manufactured by the ice making device 12 is manufactured.
0 is conveyed to the ice storage device 11. Then, when it is necessary to spray ice and snow on the slopes, the ice and snow 60 is stored in the ice storage device 1
1 is supplied to the ice and snow feeder 3 of the ice carrier 10. The ice and snow 60 supplied from the ice storage device 11 to the ice and snow feeder 3 is conveyed to the slope through the ice and snow pressure feeding pipe 6 of the pipe line 8. When ice-snow 60 is pressure-fed by the ice-carrying device 10, the blower 2 is driven to suck the external air 50 into the conduit 8 via the air filter 9, and the blower 2 adiabatically compresses and raises the temperature. After the air 50 is cooled by the heat exchanger 5, the inside of the pipe line 8 is supplied to the left in the figure, and the ice and snow 60 supplied to the ice and snow feeder 3 is pressure-fed through the ice and snow pressure-feeding pipe 6 to the ice-blowing device 4. It was transported and sprayed on the slopes.

[0003]

However, in this case, a large amount of energy is consumed for producing the ice and snow 60 from the water 61. In addition, since the ice and snow 60 was pressure-fed in the ice and snow pressure-feeding pipe 6 to the slope, the ice and snow 60 exchanges heat with the ice-and-snow pressure-feeding pipe 6 that has been heated by the outside air, solar radiation, etc. before reaching the slope. Then, the ice and snow 60 to be transported to the slope was wasted.

In view of the above circumstances, an object of the present invention is to provide a snow-melting water recovery slope structure capable of efficiently recovering the snow-melting water formed by melting ice snow, which is artificial snow.

[0005]

That is, according to the present invention, a water-permeable hole (2) is formed on a ground (80) on which a slope (20) is to be formed.
1a) is provided with water resistant means (21), and water impervious means (22) is provided on the water impervious means at a predetermined interval so that a horizontal flow can be formed. Hole (2
Water collecting pipes (23) having 3a) are respectively provided along the water blocking means, and a filling member (40) is laid on the water resistant means, the water blocking means and the water collecting pipe in a form that allows water to pass therethrough,
The snow filling means (41) is provided on the filled filling member.

The numbers in parentheses are for convenience of showing the corresponding elements in the drawings, and the present description is not limited to the description in the drawings. The same applies to the column of "action" below.

[0007]

According to the present invention having the above-described structure, when the snow stopping means (41) is covered with ice snow, which is artificial snow formed from water, most of the snow melting water formed by melting the ice snow is The water resistant means (21) prevents the soil (80) from seeping into the ground (80), soaking into the filling member (40) and forming a flow along the slope of the slope (20). ), The snowmelt water flows into the water collecting pipe (23) through the water collecting hole (23a). Further, a part of the snowmelt water penetrates into the ground (80) through the water permeation hole (21a) of the water resistant means (21), so that the ground portion in contact with the water resistant means can be kept at a low temperature.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic cutaway plan view showing an embodiment of a snowmelt water collecting slope structure according to the present invention and a snowfall facility, and FIG. 2 is a view showing a snow melting water recovery slope structure according to the present invention. FIG. 3 is a schematic view showing an example in which the collected snowmelt water is reused in the ice and snow pressure feeding path.

As shown in FIGS. 1 and 2, the slope 20 to which the snowmelt water collecting slope structure according to the present invention is applied is as follows.
In the ground 80 forming a slope inclined in the directions of arrows A and B with the direction of arrow A facing downward, the perforated film 21 is laid all over the ground 80 on which the slope 20 is to be formed. The water-resistant resin film or the like has a large number of small water-permeable holes 21a formed therein. On the perforated film 21, an L-shaped cross-section gutter 22 is provided at intervals of a water collecting distance L in the directions of arrows A and B so as to intersect with the slope of the ground 80 in the directions of arrows A and B. The water blocking gutter 22 has a shape in which the water blocking portion 22a formed on the inner surface side of the L-shape is directed in the arrow B direction, and the arrow D direction is directed downward, and is inclined in the arrows C and D directions (that is, the horizontal direction ( A water blocking gutter 22 extends in the direction of arrows C and D) to form a flow). In addition, in the water blocking part 22a of the water blocking gutter 22, a water collecting pipe 23 extends along the water blocking gutter 22 (that is, the water collecting pipe 23 extends in the horizontal direction (directions of arrows C and D) to form a flow. ) Is provided and the water collection pipe 23 is
Water collection hole 2 which is a small hole such as a strainer with one end blocked
3a consists of a formed tube. That is, each impermeable gutter 2
2 is an impervious section 2 for water flowing due to the inclination of the ground 80.
The water blocked by 2a and blocked by the water-blocking part 22a is collected by each water collecting pipe 2
3 into the water collecting pipe 23 through the water collecting hole 23a
Flows in 3 in the horizontal direction (directions of arrows C and D). Further, as shown in FIG. 2, sand 40 is spread over the perforated film 21, the water-blocking gutter 22 and the water collecting pipe 23 in a substantially uniform thickness, and on the spread sand 40, A resin snow cover block 41 having a brush-like snow cover portion 41a formed thereon is installed over the entire surface. Snow block 41
An opening 41b is formed in the base plate 41, and water or the like can flow into the sand 40 below through the opening 41b. As an alternative to the perforated film 21, the ground 80
Any material may be used as long as it can prevent water from seeping in, and for example, mortar or the like may be placed. Also, sand 4
As an alternative to 0, any material can be used as long as it can easily pass water even in a paved state, for example, crushed stone.

At the other end of each water collecting pipe 23, as shown in FIG. 1, a water sending pipe 25 is in communication with each water collecting pipe 23 so as to receive water discharged from each water collecting pipe 23. The water supply pipes 25 are connected to each other and are provided along the inclination of the ground 80 in the directions of arrows A and B so as to send water in the direction of arrow A by gravity. In addition, a flow of 2
A switching valve 26 that can be switched in the direction is connected, and a drain pipe 28 is connected to one end of the switching valve 26 so as to drain into a river, a waterway, a sewer, or the like. In addition, the switching valve 26
The water storage pipe 27 is connected to the other end of the water storage pipe 27.
A water storage tank 15 is provided at the other end.

As shown in FIG. 1, the water storage tank 15 is provided with a pump 16 capable of stopping water supply, and the pump 16 is provided with a water supply pipe 17. The other end of the water supply pipe 17 is connected to the water supply switching valve 1 of the ice making device 12 which constitutes the snowfall equipment 1.
2a, the water supply switching valve 12a controls the flow to 2
The direction can be switched. That is, the water supply switching valve 12a includes the water 61 supplied from the left side in FIG. 1 or the water supply pipe 17
Either one of the snow melting water 62 supplied from the above can be selectively made to flow to the ice making device 12 side. In addition, a water intake pipe 31 is connected in the middle of the water supply pipe 17 so as to be able to supply the snow melting water 62 to the ice-carrying device 10 that constitutes the snowfall facility 1, and further, in the middle of the water supply pipe 17, The water pipe 32 is connected so that the snowmelt water 62 supplied to the ice carrier 10 can be returned to the water supply pipe 17. That is, as shown in FIG. 3, a cooler 33 is connected to the intake pipe 31 and the condensate pipe 32.
Is provided in the ice-and-snow pressure-feeding pipe 6 forming the ice carrier 10 so as to cover the outer periphery of the ice-and-snow pressure-feeding pipe 6 to form a double pipe. Further, the water intake pipe 31 and the condensate pipe 32 are connected to the cooler 33 so that the snowmelt water 62 can flow in and out of the cooler 33 in a manner to form a counterflow with the flow of the ice and snow 60 conveyed in the ice and snow pumping pipe 6. Are connected.

Since the slope 20 has the above-described structure, when ice 60 is sprayed on the slope 20, FIG.
As shown in, the scattered ice and snow 60 is covered by the snow block 4.
Stack on 1. Ice and snow accumulated on the snow stop block 41 6
0 is fixed on the ground 80 forming a slope by the snow stopper 41a without slipping in the direction of arrow A. Ice and snow fixed 6
When 0 melts due to outside air or sunlight, it becomes snowmelt water 62,
The snowmelt water 62 penetrates into the sand 40 below the snow stopper block 41 through the opening 41b.

That is, since the perforated film 21 having water resistance prevents the snow-melting water 62 from soaking into the ground 80, most of the snow-melting water 62 can be stored in the sand 40. The snow-melting water 62 can be made to flow downward (direction of arrow A) along the slope of the slope 20. Also,
The snowmelt water 62 that has formed a downward flow does not flow all at once from the uppermost part to the lowermost part of the slope of the slope 20, but by the water blocking parts 22a of the water blocking gutters 22 provided at predetermined intervals of the water collecting distance L. , The flow is interrupted at predetermined intervals of the water collecting distance L. And the snowmelt water 62 blocked by each water blocking portion 22a is
Water collecting hole 2 of water collecting pipe 23 provided along each water blocking gutter 22
The water flows into the water collecting pipes 23 through 3a and flows in the water collecting pipes 23 in the direction of arrow D (downward right direction in FIG. 1). Therefore, it is possible to prevent the snow melt water 62 from seeping into the ground 80 and
It is possible to flow along the slope of 0, and by collecting the snowmelt water 62 at predetermined intervals of the water collection distance L, the slope 20
It can be collected efficiently without flowing out.

Further, the snowmelt water 6 collected in each water collecting pipe 23
As shown in FIG. 1, 2 flows in the direction of arrow D due to the inclination of the water collection pipe 23 and is collected in the water supply pipe 25. The snowmelt water 62 collected in the water supply pipe 25 is indicated by the arrow A due to the inclination of the water supply pipe 25.
Flow in the direction. The switching valve 26 is provided from the water pipe 25 to the water storage pipe 2
By setting to flow to 7, the water pipe 25
The snowmelt water 62 collected in the
6. The water passes through the water storage pipe 27 and is stored in the water storage tank 15.

On the other hand, a part of the snow-melting water 62 that has penetrated into the sand 40 penetrates into the ground 80 through the water-permeable holes 22a of the perforated film 21, so the ground 8 below the perforated film 21.
0 can be maintained at a low temperature, the temperature of the snow melting water 62 collected in the water collecting pipe 23 does not rise, and the ground 80
It is possible to efficiently collect the snowmelt water 62 without raising the temperature of the snowmelt water 62 without transmitting the geothermal heat.

The snow melt water 62 thus stored in the water storage tank 15 is taken out by operating the pump 16 when necessary. That is, the snowfall facility 1 causes ice and snow 60 on the slope 20.
At the time of spraying, the snow melt water 62 stored in the water storage tank 15 is sent to the ice making device 12 side through the water supply pipe 17 by operating the pump 16. Water supply switching valve 12a of the ice making device 12
Is set so that it flows from the water supply pipe 17 to the ice making device 12, so that the snowmelt water 62 flowing through the water supply pipe 17
Is supplied to the ice making device 12. Therefore, the ice making device 12
In addition, by supplying the snowmelt water 62 having a temperature lower than that of the water 61 that is normally supplied, the icemelt 60 can be formed from the snowmelt water 62 with less energy than that required to form the ice and snow 60 from the water 61. The device 12 can efficiently manufacture ice snow 60, which is artificial snow, with low energy consumption.

Further, the snowmelt water 62 may be used for cooling the ice and snow pressure-feeding pipe 6 of the ice carrier device 10 while the snowmelt water 62 is being sent from the water storage tank 15 to the ice making device 12. That is, as shown in FIG. 3, the snow melt water 62 is supplied from the water supply pipe 17 through the water intake pipe 31 to the cooler 33 provided on the outer circumference of the ice and snow pumping pipe 6.
After cooling the ice and snow pumping pipe 6, the condenser 33 is connected to the condensate pipe 32.
Return to the water supply pipe 17. Therefore, the ice and snow pressure pipe 6 is
It does not heat up due to outside air, solar radiation, etc., and does not melt while the ice / snow 60 is being pressure-fed to the slope in the ice / snow pumping pipe 6, so that the ice / snow 60 to be transported to the slope is not wasted, and the ice / snow 60 is efficiently transferred to the slope 20. Can be sprayed.

As described above, even after the water 61 is formed on the ice / snow 62, the snow / melt water 61 formed by melting the ice / snow 60 having a temperature lower than that of the water 61 is recovered to form the ice / snow 60 again. By using it, the recovered snowmelt water 62
Is used to cool the ice and snow pressure pipe 6,
Since the energy used to initially form the ice and snow 62 can be recovered as the amount of heat of the snowmelt water 61, the ice and snow 60 that is artificial snow can be efficiently manufactured with low energy consumption and sprayed on the slopes.

Further, even if a large amount of rain falls on the slope 20 in summer or the like, much of the rainwater 70 is collected from the water collecting pipe 23 to the water sending pipe 25, like the above-mentioned snow melting water 62.
Part of the rainwater 70 infiltrates into the ground 80 through the water-permeable holes 21 a of the perforated film 21. The rainwater 70 collected in the water supply pipe 25 can be drained through the drainage pipe 28 to a river, a waterway, a sewer, etc. by setting the switching valve 26 to flow from the water supply pipe 25 to the drainage pipe 28. You can Further, by setting the switching valve 26 so as to flow from the water supply pipe 25 to the water storage pipe 27, the rainwater 70 may be stored in the water storage tank 15 and used in case of water shortage. Therefore, the slope 20 is safe and easy to maintain without causing a flood due to rainfall in the summer or the like, and preventing the snow block 41 and the sand 40 from being washed away.

[0020]

As described above, according to the present invention, the water resistant means such as the perforated film 21 having the water permeation holes 21a and the like is formed on the ground 80 on which the slopes such as the ski slope 20 are to be formed. A water blocking means such as a water blocking gutter 22 is provided on the water resistant means at a predetermined interval so as to form a horizontal flow, and the water blocking means has a water collecting hole such as a water collecting hole 23a. Water collecting pipes such as a water pipe 23 are provided along the water blocking means, and sand 4 is placed on the water resistant means, the water blocking means and the water collecting pipe.
Since a filling member such as 0 is spread in a form that allows water to pass therethrough, and a snow stopping means such as a snow stopping block 41 is provided on the spread filling member,

When ice snow, which is artificial snow, is deposited on the snow stopping means, most of the snowmelt water formed by melting the ice snow is
Most of the snowmelt water can flow along the slope of the slope because the water resistant means does not soak into the ground 80 and is stored in a filling member having good water permeability. Further, the snow-melting water that has formed a flow flows into the water collecting pipe through the water collecting holes by blocking the flow of the snow-melting water at predetermined intervals by each water shielding means, so the snow melting water is collected by the water collecting pipe. Therefore, much of the snowmelt water can seep into the ground,
The snowmelt water can be efficiently collected without flowing out of the slope. Further, since a part of the snowmelt water penetrates into the ground 80 through the water-permeable holes of the water resistant means, it is possible to keep the ground 80 part in contact with the water resistant means at a low temperature and efficiently raise the temperature of the snowmelt water. Can be collected.

[Brief description of drawings]

FIG. 1 is a schematic cutaway plan view showing an embodiment of a slope to which a snowmelt water recovery slope structure according to the present invention is applied and snowfall equipment.

FIG. 2 is a cross-sectional view of a slope to which a snow melting water recovery slope structure according to the present invention is applied.

FIG. 3 is a schematic diagram showing an example in which the collected snowmelt water is reused in the ice and snow pressure feeding path.

FIG. 4 is a schematic diagram showing an example of conventional snowfall equipment.

[Explanation of symbols]

 20 …… Slope (piste) 21 …… Water resistant means (perforated film) 21a …… Permeable hole (permeable hole) 22 …… Impermeable means (impermeable trough) 23 …… Water collecting pipe (water collecting pipe) 23a …… Collection Water hole (water collecting hole) 40 ... Filling member (sand) 41 ... Snow stopping means (snow stopping block) 80 ... Ground

Claims (1)

[Claims] 1. A water resistant means having a water permeation hole is provided on the ground where a slope is to be formed, and water impervious means is provided on the water resistant means at predetermined intervals so as to form a horizontal flow. Water collecting pipes having water collecting holes are provided in the water blocking means along the water blocking means, and a filling member is spread on the water resistant means, the water blocking means and the water collecting pipe in a form that allows water to pass therethrough. A snow-melting water recovery slope structure comprising snow-stopping means provided on the spread filling member.