“从随机到定点”——论城市轨道交通车辆火灾疏散模式的转变与实现路径

'From Random to Fixed-Point'—On the Transformation and Implementation Path of Fire Evacuation Modes for Urban Rail Transit Vehicles

  • 摘要:
    目的 针对我国城市轨道交通车辆火灾疏散模式面临的运营管理、建设风险等多重困境,有必要研究车辆火灾疏散模式从“随机疏散”向“定点疏散”转变的实现路径,以期寻求消防与运输效率、建设安全之间的平衡。
    方法 本文对上海轨道交通2008—2023年间全网车辆火情数据开展统计分析,计算列车运行能力关键系统的火情发生概率;借鉴欧盟BS EN 45545:2013《铁路应用 铁路车辆防火》等国际标准,梳理我国城市轨道交通车辆制造技术现状及相关技术标准储备。
    结果及结论  涉及列车运行能力关键系统的火情发生率为7.7×10−10次/(车km),达到民航适航标准等级中“极其罕见的系统危险性”失效指标,验证了列车火灾工况下行驶至就近车站疏散具备极高的实证置信度。提出了以“车-隧”协同为核心、以提升列车火灾工况下运行能力为技术关键的定点疏散模式;明确了“车-隧”联动消防技术关联、火源和火灾场景技术边界,火灾工况下的运行能力评估等技术要点;提出引入第三方车辆防火安全独立评估的制度保障,对剩余风险提出分级管控的技术观点,并构建了涵盖技术与消防监管的实施框架。

     

    Abstract:
    Objective In view of the multiple dilemmas, such as operational management and construction risks, faced by the fire evacuation modes of urban rail transit vehicles in China, it is necessary to study the implementation path for transforming the vehicle fire evacuation mode from 'random evacuation' to 'fixed-point evacuation', aiming to seek a balance among fire safety, transportation efficiency, and construction security.
    Method A statistical analysis is conducted on the vehicle fire data of the entire Shanghai rail transit network from 2008 to 2023 to calculate the fire occurrence probability in key systems affecting train running capability. Drawing on international standards such as the European standard BS EN 45545:2013 Railway Applications - Fire Protection on Railway Vehicles, the current status of urban rail transit vehicle manufacturing technology and the reserve of relevant technical standards in China is systematically reviewed.
    Result & Conclusion  The fire occurrence rate involving key systems for train running capability is 7.7×10−8 times/(car·km), reaching the failure indicator of 'extremely remote system hazard' in civil aviation airworthiness standard grades. This verifies that driving the train to the nearest station for evacuation under fire conditions possesses extremely high empirical confidence. A fixed-point evacuation mode is proposed, centered on 'vehicle-tunnel' synergy and driven by the technical key of improving train running capability under fire conditions. Technical key points are clarified, including the 'vehicle-tunnel' linked fire protection technical correlation, technical boundaries of fire sources and fire scenarios, and running capability assessment under fire conditions. Institutional guarantees introducing independent third-party assessments of vehicle fire safety are proposed, technical viewpoints on the hierarchical management and control of residual risks are put forward, and an implementation framework covering technology and fire safety supervision is constructed.

     

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