山区公路隧道路面设计的安全性分析与建议

Safety Analysis and Suggestions on Pavement Design of Highway Tunnel in Mountainous Area

公路隧道进出口是交通安全事故高发路段。文章结合发生在四川地区公路隧道洞口的交通事故安全分析报告分析发现,引起隧道洞口交通事故的原因主要是隧道路面摩阻系数的降低与突变,以及隧道洞口段亮度的急剧变化。因此在进行隧道出入口路面设计与施工时,一方面要在提高路面抗滑性能的同时注重其相应指标的连贯性;另一方面要选择适当的路面颜色,如黄色、红色路面,同时采用隧道路面明色化技术适当增加路面亮度。

With the rapid development of highway tunnels in mountainous areas,they are also facing serious traffic safety accidents.The entrance and exit of tunnels are the concentrated sections of tunnel traffic safety accidents.Combined with the analysis of a large number of highway tunnel traffic accidents at the tunnel portal,the main causes of tunnel portal traffic accidents are the reduction and mutation of tunnel pavement friction coefficient and the sharp change of brightness at the tunnel portal.Therefore,when designing and constructing the pavement at the entrance and exit of the tunnel,on the one hand,we should pay attention to the consistency of the corresponding indexes while improving the skid resistance of the pavement;On the other hand,appropriate pavement colors should be selected,such as yellow and red pavement,and the tunnel pavement colorization technology should be adopted to appropriately increase the pavement brightness.