【作者】 叶欣欣；

【导师】 王明年；

【作者基本信息】 西南交通大学 ， 防灾减灾工程及防护工程， 2013， 硕士

【摘要】 隧道作为一种特殊建筑物,主要用来克服地形限制、改善公路线型、缩短行车间距、或者避开一些地质灾害频发地区。从而可以达到保护生态环境、节省能源、节约时间、提高社会和经济效益的目的。目前公路规范中对隧道纵坡坡度的规定如下：公路隧道的纵坡不小于0.3%且不大于3%。长度小于100m的隧道和涵洞可不受此限制。但是在一些地形受限且展线不利的地区或者修建超大纵坡坡度的隧道具有较大经济效益时,可否修建超大纵坡隧道,以及如何保障超大纵坡隧道的运营安全,这些问题亟待解决。本文通过超大纵坡隧道调研和结合汽车爬坡过程计算,得到超大纵坡隧道方案适用条件。从运营安全着手,得到了超大纵坡坡度、坡长和设计车速的确定方法。根据超大纵坡坡度事故分析,确定了超大纵坡运营安全影响因素,研究得到了超大纵坡坡度的隧道运营安全风险评估方法,并对于依托工程进行运营安全风险评估,根据风险等级,并初步提出超大纵坡隧道运营安全的保障措施。对隧道工程的方案选择和建设,以及隧道工程设计具有一定指导意义。更多还原

【Abstract】 As a special building, Tunnel are used to overcome topographical constraints, improve highways linear, shorten driving distance, or to avoid some of the geological disaster-prone areas, which can achieve the protection of the ecological environment, save energy, save time, improve the social and economic benefits.Road specification required for the tunnel Gradient are as follows:longitudinal slope of highway tunnel should be designed between0.3%and3%. The length of tunnels is less than100m should not be limited by this rule. However, in some limited terrain the exhibition line disadvantaged areas or construction Gradient tunnel has great value for money, whether it can select construction of big Gradient tunnel, a problem worthy of study.In this paper, a research of large longitudinal slope tunnel and analysis of car climbing process, we have got the applicable conditions of large longitudinal slope tunnel option. From the view of operational safety, we obtained the method for determining large longitudinal slope gradient, slope length and design speed. According to the oversized gradient accident analysis, we have got large longitudinal slope operational safety influencing factors, thus we obtained oversized gradient tunnel operational safety risk assessment methodology. and based on the project for operational safety risk assessment, based on the level of risk, and initially proposed large longitudinal slope the tunnel operator safety safeguards. Programs of the tunnel project selection and construction, as well as the engineering design of the tunnel has a certain significance.更多还原