Method for reducing highway surface accumulated snow through air flow guiding

Abstract

The invention provides a method for reducing highway surface accumulated snow through air flow guiding and relates to the field of highway accumulated snow. The method aims to reduce the highway surface accumulated snow. According to the technical scheme, supporting columns are fixed to the outer sides of guard bars on the two sides of a highway, fans are fixed to the upper ends of the supportingcolumns, and air inlets of the fans are located on one face of the highway surface. Air outlets of the fans are located on the outer side of the highway, and the fans absorb air from the position above the highway surface and discharge the air mixed with the snow to the outer side of the highway. The heights of the supporting columns are 20-45 m, and the air speeds of the air outlets are 15-25 m / s. The opening angles of sectors formed by the air inlets of the fans and the curvature centers of the air inlets are 90-120 degrees, and the level differences of the adjacent fans are 1-2 m. The method for reducing the highway surface accumulated snow through air flow guiding has the beneficial effects that the air mixed with the snow is blown to the outer side of the highway surface, smooth passing of the highway is well maintained, disturbance to the passenger journey is reduced, good operation of transportation during the spring festival is facilitated, and the labor intensity and work riskof highway traffic polices are reduced.

Description

technical field [0001] The invention relates to the field of snow accumulation on highways, in particular to measures for reducing road snow accumulation. Background technique [0002] Every winter, the northern and southern alpine areas of our country are prone to snowfall, and the snowfall is deposited on the highway surface. Due to the low temperature, it is easy to freeze, causing the road surface to be wet and slippery, which can easily lead to car accidents. The commonly used method is to use snow-melting salt, mix salt with snow, and reduce its freezing temperature (freezing point). Although this method is widely used, there are many shortcomings in this method: it requires production costs; it leads to an increase in the concentration of salt in the environmental soil and affects the ecology. need long-distance transportation and storage; need high-speed traffic police to close the road and sprinkle salt, resulting in high-speed police force tension, and slippery hig...

AI Technical Summary

Problems solved by technology

The commonly used method is to use snow-melting salt, mix salt with snow, and reduce its freezing temperature (freezing point). Although this method is widely used, there are many shortcomings in this method: it requires production costs; it leads to an increase in the concentration of salt in the environmental soil and affects the ecology. ; Long-distance transportation and storage are required; high-speed traffic police are required to close roads and sprinkle salt, which leads to tension in the high-speed police force, and the slippery high-speed road surface also poses a threat to high-speed traffic police, etc.

[0003] It is also proposed to heat the road surface, or hot air to blow the road surface. This method is theoretically effective, but it ignores one of the most fundamental problems: the heat of dissolution of ice is very high, and 1 gram of ice melts into water, which is roughly equivalent to 1 gram of water. From 0 degrees Celsius to 80 degrees Celsius, 1 gram of water needs 1 calorie of heat to raise 1 degree Celsius, that is, 4.18 joules, then 1 ton of ice (about 1 cubic meter in a compact case, that is, a small amount) needs to be melted into water The energy is 1000 kg * 1000 g / kg * 4.18 joules / (grams * degrees Celsius) * 80 degrees Celsius, if converted into common units "degrees = kWh = 1000 watts * hours = 1000 watts * 3600 seconds = 1000 joules / seconds * 3600 seconds", which is 92.88 degrees. This figure has not taken into account the heating efficiency, because a large part will heat the air, and then the air will float away to form an invalid part. If the invalid part is taken into account, the work (energy) that may be required to multiply

In addition, the snow may keep falling, so it needs to be heated all the time, and the snow varies from time to time, so the heating power is difficult to determine, and the load on the power grid is very limited: winter is a dry season, and the hydropower in the north is basically 0 , Heating in winter also requires energy (air conditioning), and it is basically not advisable to use electric heating

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