长大单洞公路隧道联络通道间距设置研究

发布时间：2018-06-20 01:37

本文选题：单洞隧道 + 联络通道间距　；参考：《长安大学》2014年硕士论文

【摘要】：本文从隧道火灾中人员逃生与联络通道间距关系入手，总结单洞双向交通公路隧道与双洞单向交通公路隧道火灾时人员逃生的区别，借鉴已有对双洞隧道火灾人员逃生的研究方法和研究结果，找出适合单洞隧道的研究方法和技术路线，针对目前国内外学者研究的现状与不足，对研究方法加以改进，最后分析得出长大单洞公路隧道联络通道间距的合理推荐值。首先，分析现有的几种隧道火灾中人员逃生结果判别条件，总结其数学模型与现实情况的矛盾，同时对该数学模型加以修正，把修正后的数学模型作为本文判别人员逃生结果的依据。其次，建立长大单洞公路隧道几何模型，借助流体力学软件PHOENICS对隧道火灾流场进行三维数值模拟，分析隧道火灾中人员逃生路线上温度场及烟雾场的变化规律。再次，依据前文研究结果，建立隧道火灾中人员逃生失败概率数学模型，使用MATLAB数学软件进行随机模拟试验，采用蒙特卡罗法计算各种工况中人员逃生失败概率。最后，依据风险评估准则和人员逃生失败概率与逃生距离之间关系得到不同逃生距离对应的风险等级，，以逃生距离和风险等级的一一对应关系为判断依据得出长大单洞公路隧道联络通道间距推荐值范围。
[Abstract]:Starting from the relationship between personnel escape and the distance between contact channels in tunnel fire, this paper summarizes the difference of personnel escape in single hole two-way traffic highway tunnel and double hole one-way traffic road tunnel. Referring to the existing research methods and results of fire escape in double-hole tunnel, the research method and technical route suitable for single-hole tunnel are found out, and the research methods are improved in view of the present situation and deficiency of domestic and foreign scholars. Finally, the reasonable recommended value of the distance between the long-span single-hole highway tunnels is obtained. First of all, the paper analyzes the conditions of judging the result of escape of several kinds of tunnel fire, summarizes the contradiction between the mathematical model and the actual situation, and modifies the mathematical model at the same time. The modified mathematical model is used as the basis for judging the result of personnel escape. Secondly, the geometric model of long-span single-hole highway tunnel is established, and the three-dimensional numerical simulation of tunnel fire flow field is carried out with the help of fluid dynamics software PHOENICS, and the variation law of temperature field and smoke field on the escape route of people in tunnel fire is analyzed. Thirdly, according to the previous research results, the mathematical model of escape failure probability of tunnel fire was established, and the probability of escape failure was calculated by Monte Carlo method. Finally, according to the risk assessment criteria and the relationship between escape failure probability and escape distance, the corresponding risk levels of different escape distance are obtained. Based on the one-to-one corresponding relation between escape distance and risk grade, the range of recommended distance between long and long single tunnel is obtained.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U459.2;U458.1

【参考文献】