基于随机变量概率分析的铁路隧道紧急救援站间距计算方法  

A Calculation Method for Spacing between Emergency Rescue Stations in Railway Tunnels Based on Probability Analysis of Random Variables

作　　者：陈昕 于丽[1,2] 郭晓晗 王明年[1,2] 张晨妍 CHEN Xin;YU Li;GUO Xiaohan;WANG Mingnian;ZHANG Chenyan(School of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;Key Laboratory of Transportation Tunnel Engineering,Ministry of Education,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学土木工程学院,四川成都610031 [2]西南交通大学隧道工程教育部重点实验室,四川成都610031

出　　处：《铁道学报》2024年第10期174-182,共9页Journal of the China Railway Society

基　　金：中国国家铁路集团有限公司科技研究开发计划(N2022G023,K2022G057,N2021G033);中国铁路经济规划研究院有限公司基金课题(2023YJJ02)。

摘　　要：考虑着火列车位置和残余运行时间两个随机变量,构建基于列车残余运行的紧急救援站间距定量计算方法并进行验证,分析隧道纵坡、列车制动性能、列车动力损失对紧急救援站间距的影响,以及不同紧急救援站间距的适用条件。研究结果表明,列车动力损失增大、制动性能减弱、隧道纵坡增大均会导致紧急救援站间距减小,其重要性排序为列车动力损失>列车制动性能>隧道纵坡;紧急救援站间距15 km的适用条件为列车动力损失≤1/4;间距20 km的适用条件为列车动力损失≤1/4,且隧道坡度为30‰时,通行列车制动性能应与CRH5相当;间距30 km的适用条件为99.97%保证率的列车残余运行时间≥21.5 min。By considering two random variables,including the location and residual running time of the fire train,a quantitative calculation method for the spacing between emergency rescue stations in the tunnel was established and validated to evaluate the impact of tunnel longitudinal slope,train braking performance,and train power loss on the spacing between emergency rescue stations,as well as the applicable conditions for different spacings between emergency rescue stations.The results show that an increase in train power loss,a decrease in braking performance,and an increase in the longitudinal slope of a tunnel will all lead to a reduction in the spacing between emergency rescue stations,with the order of importance being train power loss,train braking performance,and tunnel longitudinal slope.The applicable condition for the emergency rescue station spacing of 15 km is that the train power loss is no more than 1/4.The applicable condition for the spacing of 20 km is that the train power loss is no more than 1/4.With the tunnel longitudinal gradient of 30‰,the train braking performance of the passing train should be equivalent to that of CRH5.The applicable condition for the spacing of 30 km is that the residual running time of the train with a guaranteed rate of 99.97%is no less than 21.5 min.

关 键 词：铁路隧道 紧急救援站间距 列车动力损失 列车制动性能 隧道纵坡 

分 类 号：U25[交通运输工程—道路与铁道工程]