An overall analysis of factors influencing the safety system of metro running tunnel was carried out; a Hierarchy structure Model is set up.

较全面分析了影响地铁区间隧道安全体系的各个因素，建立了层次结构模型。

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The logical models for safety analysis of fuzzy system were set up, they were different from the usual method based on the probability theory.

提出了模糊系统安全分析的逻辑模型。这一方法是与基于概率理论之上的方法完全不同的安全分析方法。

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By using a method of set pair analysis the systems including risk source in each zone are sorted, and then necessary measures are taken timely in design to support the zonal safety analysis.

利用集对分析方法对民机区域内含危险源的系统进行风险排序，然后有针对性的及时对设计采取必要的措施，以支持区域安全性设计。

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