| Snow or icy road tunnel traffic has a significant impact on transportation safety, the wind tunnel at the entrances to the tunnel effect as prone to the phenomenon of snow-ice, seriously affect the smooth running of traffic, snow melting agent commonly used method for the current shortage of paper import and export of road tunnel automatic thermal control snow de-icing techniques are studied.In this thesis, the experimental study, finite element analysis software on the road surface and the temperature laws layer, the temperature distribution measurement and numerical simulation, and compared the power of the chosen test analysis. Meanwhile, Deicing System by social and economic benefits of the preliminary discussion.Analysis shows that:heating cable pavement layer temperature field as a "saddle-shaped" distribution, the surface temperature of central heating cables, heating cable center the temperature maximum vertical upward, vertical upward between two heating cable the temperature minimum, was the sine type distribution. After tests and theoretical analysis, Shaanxi province road when the road surface temperature is 2～3℃, the snow was the best, the pavement heating cable power about 300 watts when the results will be ideal snow icing. Comparison with other snow melting, heating cable is easy to operate, easy to control, is conducive to environment protection.
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