长距离连续隧道群区段划分研究

Study on Section Division of Long-Distance Continuous Tunnel Group

根据原有标准划分长距离连续隧道群忽略了驾驶员多次进出隧道的视觉负荷和长时间驾驶的疲劳累积,因此结合驾驶员生理、心理状态对长距离连续隧道群进行了划分,为相关隧道群安全设计提供理论基础。依托雅康高速泸定至康定段隧道群,采用实车试验、室内试验和问卷调查相结合的方法,对驾驶员的瞳孔直径变化、心率变化和主观心理感受展开研究分析,研究表明:实车试验结果显示驾驶员初感疲劳时间是15~25 min;问卷调查结果显示驾驶员15 min内经过4~8个隧道会感到紧张,室内试验结果显示驾驶员15 min内经过4个隧道会感到不适;将总里程超过15 min行车距离或者15 min行车距离内隧道总数超过4座的隧道群称为长距离连续隧道群,应设置相关措施保障行车安全。

The division of long-distance continuous tunnel groups according to the original standard ignores the visual load of drivers entering and leaving the tunnel many times and the fatigue accumulation of long-time driving,so the long-distance continuous tunnel groups are divided according to the physiological and psychological state of drivers.It provides a theoretical basis for the safety design of tunnel groups.Relying on the tunnel group of Luding to Kangding section of Yakang Expressway,the changes of pupil diameter,heart rate and subjective psychological feelings of drivers are studied and analyzed by combining real vehicle test,indoor test and questionnaire investigation.The results show that:the initial fatigue time of drivers is 15~25 min.The result of the questionnaire survey shows that the drivers feel nervous after passing through 4 tunnels in 15min,and the indoor test results show that the drivers feel uncomfortable after passing through 4 tunnels in 15 min.The tunnel group whose total mileage exceeds the driving distance of 15 min or the total number of tunnels more than 4 within 15min distance is called long-distance continuous tunnel group,and relevant measures should be set up to ensure traffic safety.