JPH0754320A - Method of supplying thawing agent on road surface and device thereof - Google Patents

Abstract

PURPOSE:To prevent frozen snow from appearing on the surface of a road, by oozing a snow thawing agent from pipes buried in the road. CONSTITUTION:A plurality of pipes 4 having many small holes 4a drilled thereon are buried at the lowermost part of a porous paving material 1a laid down on a sand bed 3 and an impermeable paving bed 2. The pipes 4 are connected to a tank charged with a snow thawing agent 8 through pipes 5 and a pump 6. The thawing agent 8 is supplied under pressure from the tank 7 for thawing agent by the pump 6 through the pipes 5 so as to ooze the agent from the small holes 4a of pipes 4 onto the surface of porous paving material 1 in order to thaw heaped snow.

Description

Detailed Description of the Invention

[0001]

[Industrial application] Roads in cold regions become ice-burned in winter, and ordinary rubber tires deteriorate the starting and braking performance of vehicles. For this reason, the present invention relates to a device that supplies a snow melting agent from a pipe buried in a road to a road paving surface to prevent ice burn on the road surface.

[0002]

2. Description of the Related Art Conventionally, in order to prevent the road surface from freezing in cold regions, a method of spraying a snow-melting agent with a manual vehicle for spraying or mixing a granular snow-melting agent with a pavement material and exuding it on the road surface There is.

[0003]

Since the snow-melting agent is applied manually by a vehicle dedicated to spraying, it is impossible to spray the snow-melting agent simultaneously with snowfall. Furthermore, when the amount of spraying is large, environmental damage such as salt damage is caused. Further, the method of mixing the granular snow-melting agent with the pavement material has a problem that it is difficult to control the amount of the snow-melting agent oozing out, and it is difficult to maintain the effect for a long period of time.

[0004]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention paves a road with porous asphalt or concrete, and further forms a porous pipe or a small hole in the paving. By embedding a pipe and pumping a liquid snow-melting agent into this pipe to supply the snow-melting agent to the porous pavement surface, a part of snow, ice, etc. on the pavement surface is melted to form a sherbet layer. , Easy to peel.

[0005]

[Operation] When a vehicle passes on this road surface, snow,
Since ice etc. peel off and the pavement surface appears, the starting and braking performance of the vehicle is improved, and slip accidents can be prevented. Further, since the snow-melting agent is supplied to the road surface in such a state that the snow-melting agent oozes out, the amount of the snow-melting agent used is reduced. Further, by constantly measuring the snowfall sensor and the road surface temperature sensor, it is possible to sense the snowfall state and automatically control the supply amount and the supply timing of the snow-melting agent.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

Embodiment 1 FIG. 1 shows a first embodiment and is a sectional view of a roadbed structure of a road. The surface layer 1 of the road pavement is a porous pavement material, and the base layer 2 is a water impermeable pavement material. Below that is a gravel layer 3. The resin or metal pipe 4 having the small holes 4a is embedded in the lowermost portion of the surface layer 1 of the pavement. Further, a liquid snow melting agent 8 is pumped from a pipe 5 by a pump 6 from a snow melting agent tank 7 installed on the ground or underground. The snow-melting agent sent to the pipe 4 is the porous paving material 1
It exudes from the surface of the snow and melts some of the snow and ice that has accumulated on it. This will be described with reference to FIG. The lightning protection agent sent to the pipe 4 exits from the small hole 4a and reaches the pavement surface through the voids of the porous pavement 1. If there is snow or ice on this road surface, the snow and ice mix with the snow-melting agent at the portions that come into contact with the road pavement surface, so part of the snow melts due to the freezing point depression phenomenon, and the sherbet layer 11 is formed. To be done. Since the surface where the snow and ice come into contact with the road surface becomes a sherbet in this way, the snow and ice are easily separated from the road surface. When the tires 9a and 9b of the vehicle pass therethrough, the tires 9a and 9b are gradually peeled off and the paved surface appears. In such a state, the frictional resistance between the tire and the road surface increases, and the slip accident of the vehicle can be prevented. The pipe 4 is 10 to 30c
The snow-melting agents arranged at intervals of about m fill the voids of the porous pavement material, and the snow-melting agent is uniformly supplied from the pavement surface to form the sherbet layer 11.

Embodiment 2 FIG. 3 shows a second embodiment. The structure of the road is the same as that of the first embodiment, but as a method of pumping the snow melting agent 8, the snow melting agent tank 7 is This is a system in which air pressure is applied by the compressor 12. According to this method, the amount of the snow-melting agent supplied per unit time can be controlled by the magnitude of the air pressure applied to the tank 7.

Embodiment 3 FIG. 4 shows a third embodiment. As a function for judging the snowfall state in the first and second embodiments, the pump 6 shown in FIG. A control device for controlling the air pressure of the tank 7 shown in FIG. 2 is added. Snowfall sensor 13
Sends the presence / absence of snowfall to the controller 15 as data.
The outside air temperature sensor 14 measures the temperature of outside air, and is a thermocouple, a resistor, a thermistor, or the like. Controller 15
Has a function of starting and stopping the pump 6 by judging whether or not the road surface is frozen based on the snowfall state and the outside air temperature state. Alternatively, the compressor 12 is provided with a function of varying the air pressure of the snow melting agent tank 7 to control the amount of the snow melting agent supplied to the road surface.

[0010]

As described above, roads in cold regions are likely to be in an ice-burn state in winter, and ordinary rubber tires deteriorate the starting and braking performance of vehicles. According to the present invention, the snow-melting agent is exuded from the pipe buried in the road onto the road paving surface to prevent ice burn on the road surface.

[Brief description of drawings]

FIG. 1 is a first embodiment of the present invention, which is a road structure and a snow melting agent supply device.

FIG. 2 shows how snow or ice peels off the road surface.

[Fig. 3] Snow-melting agent supply device using a compressor

FIG. 4 relates to a control device.

[Explanation of symbols]

 1 Porous Pavement Material 2 Impermeable Pavement Material 3 Gravel Layer 4 Pipe 4a Small Hole 5 Piping 6 Pump 7 Snow Melting Agent Tank 8 Snow Melting Agent 9a Tire 9b Tire 10 Ice 11 Sherbet Layer 12 Compressor 13 Snowfall Sensor 14 Outside Air Temperature Sensor 15 Control vessel

Front page continued (72) Inventor Eizo Ishiyama Kita-ku Kita-ku, Kita-ku, Nishi 11-11 West, Hokkaido Industrial Test Station (72) Inventor Toshihiro Kitaguchi Kita-ku, Kita-ku, Kita-ku 11-11, Hokkaido Industrial Test Station (72) Inventor Mitsushi Uede 11-1 Kita-ku Nishi 11-chome, Kita-ku, Sapporo City Hokkaido Industrial Test Station (72) Hideo Hoshina 11-11 Kita-ku Nishi 11-chome, Kita-ku, Sapporo City Hokkaido Industrial Test Station (72) Inventor Shigeji Honda, Kita-ku, Kita-ku, Kita-ku, Nishi, 11-1, 1-1, Hokkaido Industrial Test Station (72) Inventor Ken Otani, Kita-ku, Kita-ku, Sapporo, Kita-ku, 11-1, 1-1, Hokkaido, Industrial Test Station ( 72) Inventor Hironori Minoshima 11-1, Kita-jo Nishi, Kita-ku, Sapporo City Hokkaido Industrial Test Station (72) Inventor Tomoyuki Uchiyama 11-1, Kita-jo Nishi 11, Kita-ku, Sapporo City Hokkaido Industrial Test Station

Claims (4)

[Claims] 1. A device for supplying a snow-melting agent to a road surface from a snow-melting agent tank provided on the ground or underground, through a pipe buried below the road surface. 2. A device for uniformly supplying a snow melting agent from a porous paved road to the road surface through a pipe buried under the road surface. 3. A device for applying air pressure to a closed tank for snow melting agent provided on the ground or underground by a compressor and controlling the supply amount of the snow melting agent to the road surface by the air pressure. 4. A device for controlling a supply amount and a supply timing of a snow melting agent by a snowfall sensor and a road surface temperature.