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SafetV of long railway tunnels

机译：长铁路隧道的安全性

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摘要

Planning and designing railway tunnels with an explicit reference to safety issues is becoming of utmost importance since the combination of high speed, mixed goods--passenger traffic and extreme length of the new tunnels under design or concept evaluation, have sensitively modified the inherent safety of the railway tunnel. Although the probability of occurrence of accidental events may still be considered rather low, the possible consequences of such events in long tunnels can be catastrophic, therefore raising the overall risk to levels that may be no more acceptable. The scope of this paper is to illustrate the state-of practice related to risk analysis of long railway tunnels. First, ambitious tunnel projects are briefly reviewed. The applicable risk-analysis procedures are then described and discussed. The problem of risk appraisal is addressed and quantitative target safety levels are proposed. Safety systems for risk reduction are outlined.
机译：明确涉及安全问题的铁路隧道的规划和设计变得至关重要，因为高速，混合货物（客流）和经过设计或概念评估的新隧道的超长长度的结合，已经敏感地改变了铁路隧道的固有安全性。铁路隧道。尽管仍然可以认为发生意外事件的可能性相当低，但在长隧道中发生此类事件的可能后果可能是灾难性的，因此将总体风险提高到了无法接受的水平。本文的范围旨在说明与长铁路隧道风险分析相关的实践状态。首先，简要回顾雄心勃勃的隧道项目。然后描述和讨论适用的风险分析程序。解决了风险评估问题，并提出了定量目标安全等级。概述了降低风险的安全系统。

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