| As China actively promotes a new round of western development strategy,the number of high-altitude and extra-long railway tunnels has gradually increased,but there are few studies on the safety of evacuation of high-altitude railway tunnels.In the high altitude environment,the characteristic parameters of personnel evacuation and the design parameters of the emergency rescue station are the main factors affecting personnel safety,and their influence degree and law are random under high altitude conditions,so the safety of personnel evacuation is uncertain.The required safe evacuation time(RSET)of the personnel in the emergency rescue station of the high-altitude and extra-long railway tunnel is a decisive factor for the safety of the evacuated personnel.At present,there is still a lack of research on the RSET of high-altitude emergency rescue stations.Therefore,this paper conducts further research on the evacuation characteristics of emergency rescue stations in high-altitude and extra-long railway tunnels and the RSET calculation model.The main conclusions are as follows:(1)Investigated the impact of high altitude on the relevant indicators of human body systems,verified the reliability of the relationship between evacuation speed and altitude through field tests,and clarified the evacuation speed of different types of people at different altitudes;(2)The personnel evacuation mode of high-altitude and extra-long railway tunnels is determined,the reliability of Pathfinder software is verified through emergency evacuation tests,and the evacuation model of emergency rescue station is established by Pathfinder for simulation tests,and the personnel evacuation law of the emergency rescue station of the high-altitude railway tunnel was obtained;(3)An orthogonal test scheme is designed for simulation test,and the range analysis of the test results is carried out,and the RSET calculation model of the emergency rescue station of the high-altitude railway tunnel is deduced by using the regression analysis method;(4)Using the RSET calculation model,the recommended values of the design parameters of the emergency rescue station in the high-altitude railway tunnel are deduced,and the relevant suggestions and schemes for the disaster prevention and rescue of the high-altitude railway tunnel are put forward. |
