寒区公路隧道路面电加热融雪防滑新型技术研究

New Technology Study on Cold-Region Highway Tunnel Pavement Anti-Skidding by Electrical Heating Snowmelt

目前,我国寒冷地区降雪时隧道洞口段路面防滑问题突出,养护单位广泛采用的融雪盐、人工、机械等融雪防滑方法的效果不佳、缺点明显。据此,提出一项在路面结构层内铺设发热电缆加热路面的新型融雪防滑技术,经过现场试验、室内试验及数值模拟的方法进行系统分析研究后,总结出洞口路面加热结构型式、加热功率、预热时间等关键参数,验证了电加热技术在解决寒区隧道洞口段路面防滑问题的优越性。

At present, the pavement anti-skidding problem of tunnel entrance section is obviously in Chinese cold region. Anti-skidding methods that are widely used by maintenance units such as snow melting salt, human labor force, mechanical force are ineffective. Therefore, a novel deicing and snow melting mode by heating pavement where laying heating cable is proposed. Through the field experiment,laboratory experiment and numerical simulation, the anti-skidding pavement structure type, heating power, preheating time and other parameters are put forward. The superiority of the electric heating pavement technology that solve the anti-skidding problem in cold-region tunnel entrance section is confirmed.