公路隧道交通疏散策略

针对公路隧道环境特殊、事故率高、救援困难的特点，合理地将隧道划分为若干个区域，设置相应的疏散引导信号；分析了在不同区域发生不同程度事故时的疏散路径、对应的信号状态，以及为避免横洞疏散车辆与主洞直行车辆发生冲突，确定开启疏散引导信号时间的计算公式；讨论了该公式中阈值的设定、数值的比较和利用比较结果确定疏散引导策略的方法；给出了公路隧道不同类型事故交通疏散的策略，并进行了模拟实验，结果表明控制与诱导效果良好。

Strategy of dispersing disaster in highway tunnel

The environment in highway tunnel has special characteristics. The occuring rate of accidents in highway tunnel is very high, and it is difficult to rescue the accidents. In order to speed up the rescue efficiency, the highway tunnel is divided into different kinds of parts according to their environment characteristics. At each part, the corresponding signal facilities for guiding traffic are equipped. The algorithm of signal is presented to determine the route of guiding traffic and signal state. So the conflict of guiding traffic with the normal traffic can be prevented, and the guiding strategy can be given. The guiding strategy is simulated in an actual highway tunnel. The results show that this guiding strategy has a good controlling and inducing effect. 1 fig, 12 refs.