Method for melting snow and ice based on carbon fiber-glass fiber composite braiding net

Abstract

The invention discloses a snow-ice melting method based on carbon-glass fiber composite woven nets, which belongs to the field of transportation and disaster prevention. The method is characterized in that a thermal insulating layer, a heat conducting layer, a carbon-glass fiber composite woven net subjected to electric insulation and sand sticking treatment, and another heat conducting layer are laid in turn on a base layer of a to-be-heated body; a temperature measurement element is buried in a surface layer of the to-be-heated body; a carbon fiber bundle heating element is connected to a controllable power source with protection function in a series parallel connection mode by use of electric conducting silver colloid and a conductor; and according to surface layer temperature of the to-be-heated body, surface wind speed, the thickness of snow cover and ice, air temperature and the expected time for melting snow and ice, a digital PID temperature control system optimizes and adjusts the control parameters of the system and regulates heating power. The method has the advantages of high construction speed, uniform fast heating, stable performance, long life span, low cost and the like, plays a role in preventing cracking and reinforcing, and is an ideal snow-ice melting method for pavement, bridges and other facilities.

Description

Technical field [0001] The invention belongs to the field of transportation and disaster prevention and control, is a solution method for eliminating the disasters caused by snow accumulation and icing in transportation, and relates to a method for melting snow and ice based on a carbon fiber-glass fiber composite woven net. Background technique [0002] The snow and icing on the road in winter have many constant impacts on people’s travel: for urban roads, slippery vehicles are slow, traffic jams, and frequent accidents; for expressways, the speed limit due to poor road conditions, when accumulating When snow and icing are severe, the expressway will be partially or completely closed for safety reasons; for airports, snow and icing bring safety hazards to the aircraft’s take-off and landing, causing the aircraft to fail to take off and landing normally and causing flight delays. Serious consequences of the temporary closure. Therefore, snow and icing not only bring safety hazard...

AI Technical Summary

Problems solved by technology

[0002] The snow and ice on the road 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 expressways, due to poor road conditions and speed limits, when accumulated When the snow and icing are serious, for the sake of safety, some or all of the highways will be closed; for the airport, the snow and icing will 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, the airport Serious Consequences of Temporary Closure

Therefore, snow and icing not only bring safety hazards to transportation, but also have an impact on social economy and people's lives. Effective methods must be adopted to remove snow and icing in the above key facilities in time to ensure smooth transportation

The method of snow removal and ice melting using deicing agent consumes a lot of manpower and material resources, and at the same time, it will cause damage to the road surface and the environment; the method of combining large-scale mechanical snow removal and manual snow removal also consumes a lot of time during cleaning and transportation. Manpower, material and financial resources, slow removal speed, low efficiency, and manual and mechanical snow removal methods also have a certain degree of mechanical damage to the road surface. insufficient

[0003] The heating cable is buried under the road surface, and the heat generated after electrification can eliminate the snow and ice on the road surface, but the metal heating body used for heating has poor corrosion resistance, and the durability problem under repeated and impact loads 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 quality

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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