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简述了公路隧道运营安全评价总体思路,重点介绍公路隧道安全设防等级划分的方法。认为公路隧道运营安全设防等级的划分是进行隧道运营安全评价的前提,在进行公路隧道运营安全设防等级划分时,应重点处理好安全设防等级和隧道重要程度、隧道规模、隧道设计交通量、车速、交通组成以及服务水平的关系。同时,认为隧道安全设防等级的划分应该重点考虑隧道重要度、长度和设计交通量三因素。最后,根据三者关系,将隧道的安全设防等级划分为5级,并给出了具体的划分方法。
The general idea of highway tunnel operation safety evaluation is briefly described, and the method of dividing the safety fortification level of highway tunnel is emphatically introduced. It is considered that the classification of highway tunnel operation safety fortification level is the prerequisite for the tunnel operation safety evaluation. When classifying the safety fortification level of highway tunnel operation, the safety fortification level and tunnel importance, tunnel size, tunnel design traffic volume, vehicle speed , Traffic composition and service level. At the same time, it is considered that the classification of tunnel safety fortification should focus on the three factors of tunnel importance, length and design traffic volume. Finally, based on the relationship between the three, the tunnel security level is divided into five levels, and gives a specific method of division.