河南郑州“7·20”特大暴雨灾害对地铁区间人员疏散平台改进设计的启示

Reflection from Zhengzhou′7·20′Rainstorm towards Personnel Evacuation Platform Renovation Design in Metro Sections

[目的]近年来,极端天气增多增强、自然灾害频发,已建城市轨道交通、在建基坑工程等因暴雨导致的灾害极大地对出行人员安全及社会财产造成了不可挽回的巨大损失,为此,必须进一步提升城市轨道交通系统的防淹、抗灾能力。[方法]以河南郑州“7·20”特大暴雨灾害对地铁的影响为出发点,讨论了地铁区间发生灾害时,列车乘客的疏散方案,得出了地铁线路关键部位疏散平台设置方案的有关建议。[结果及结论]建议在地铁区间及其与车站之间采用疏散平台贯通方案;区间联络通道处疏散平台采用贯通方案,并设置若干竖向钢爬梯,作为连接道床与疏散平台的阶梯;车站端部区间人防隔断门处建议增设人防小门,使区间疏散平台与车站设备区站台板连通,以便于乘客疏散。

[Objective]In recent years,extreme weather events and natural disasters increase and intensify frequently,and rainstorm-induced disasters in built urban rail transit and on-going foundation pit projects are causing significant and irreparable losses to the safety of passengers and social property.Thus,it is necessary to further enhance urban rail transit system flood prevention and disaster resistance capabilities.[Method]Taking the impact of Zhengzhou′7·20′Rainstorm on metro as a starting point,the evacuation schemes for train passengers during metro interval disasters are discussed and relevant suggestions are derived for the evacuation platform setup plan at critical parts of metro lines.[Result&Conclusion]It is suggested to adopt a through-type evacuation platform scheme between metro intervals and stations;interval connecting passage evacuation platform should adopt the through-type scheme and set up vertical steel ladders for connecting track bed and evacuation platform;small civil defense doors should be added at the civil defense partition doors on station end interval to connect the interval evacuation platform with the station equipment area platform board for facilitating passenger evacuation.