秦岭天台山特长隧道洞内交通转换带设计探讨

Discussion on the Design of Traffic Transfer Zone in Qinling Tiantai Mountain Extra-long Tunnel

特长公路隧道因其结构较为封闭,双洞之间连通性较差,不利于事故紧急救援和隧道内车辆保通。结合相关研究,长为15.6 km的秦岭天台山特长隧道洞内需设置交通转换带,将其用于救援和保通。通过数值分析与现场试验,进一步确定交通转换带设计关键参数及交通组织方案。交通转换带的间距、长度、宽度和角度等参数设置可为今后类似工程实施提供借鉴。

The length of Tiantai Mountain Tunnel in Qinling Mountains is about 15.6 km,and the left and right tunnels are arranged separately.Due to the closed structure and poor connectivity between two tunnels,extra-long tunnels are not conducive to emergency rescue and traffic safety under accidents.Based on relevant research,the traffic transfer zone is set up in Tiantai Mountain Tunnel for the convenience of accident rescue and smooth traffic.By means of numerical analysis and field experiment,the key parameters and traffic organization scheme of the traffic transition zone are further determined.Research on the setting distance,single length,width and angle parameters of traffic transfer zone can provide reference for similar projects in the future.