Snow-melting ice-thawing method of composite mesh grid

Abstract

The invention discloses a snow-melting ice-thawing method of a composite mesh grid, and belongs to the fields of traffic transportation and disaster prevention. The invention is characterized in that a base layer of an object to be heated is paved orderly with a heat insulation layer, a heat conduction layer, a carbon fiber-glass fiber composite mesh grid treated by electrical isolation and sand adhesion, and a heat conduction layer; temperature measuring elements are embedded on the surface layer of the object to be heated; a carbon fiber beam object to be heated is connected to a controllable power supply with a protection function by a conductive silver colloid and a wire in a series-parallel mode; a digital PID temperature-control system optimizes and adjusts system control parameters according to the surface temperature, surface wind speed, accumulated snow and ice thickness, air temperature and expected time for snow melting and ice thawing, and thus adjusts heat power. The beneficial effect of the present invention is that the method has the advantages of high construction speed, uniform and quick heating, stable performance, long life, and low cost, has the functions of crack resistance and reinforcement, and is an ideal snow-melting ice-thawing method for facilities such as pavement, bridges, and the like.

Description

technical field [0001] The invention belongs to the fields of transportation and disaster prevention and control, and mainly relates to a method for melting snow and ice based on a composite braided net. Background technique [0002] The snow and ice on the road surface in winter have many constant impacts on people's travel: for urban roads, due to the slow speed of slippery vehicles, traffic congestion, and frequent accidents; for railways, the tracks are covered with ice and snow, which can easily cause trains to derail , trains are blocked on the road, passengers are trapped or stranded; for highways, the speed limit is due to poor road conditions, when snow and ice are serious, for safety reasons, the highway will be partially or completely closed; for airports , Snow and icing bring safety hazards to the take-off and landing of the aircraft, resulting in the inability of the aircraft to take off and land normally, causing flight delays, and serious consequences of the ...

AI Technical Summary

Problems solved by technology

[0003] Bury the heating cable under the road surface, and generate heat after electrification to eliminate snow and ice on the road surface, but the metal heating body used for heating has poor corrosion resistance , The durability problem under impact load also needs in-depth research. In addition, this method consumes a lot of metal resources, and at the same time, it is inconvenient to install due to the large mass

There are also many researches on snow melting and ice melting using carbon fiber conductive concrete and graphite conductive concrete, and some scientific research results have been obtained. However, the conductivity and heating power of conductive concrete are easily affected by the temperature, density and moisture content of the pavement matrix. If the conductive concrete cracks, it will cause large fluctuations in the heating power, so the stability and reliability of the heating power of this method are poor

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