The present work analyzed the subway construction accidents in China for nearly 15 years through network collection,literature review,survey and so on,finding out the main factors and the trend of these accidents. By conceptualization and semanticization of the construction accidents,the concept tree of subway construction accidents was established. Then the similarities of different accidents were calculated with their concept and property,building the accidents case database based on case-based reasoning. This database is helpful for different companies to retrieve some highly similar accident cases with their own cases based on their construction environment,which plays a significant role in the formulation of safe operation and measures towards accident emergency during subway construction.%通过网络搜集、文献查阅、单位调查等方式,对我国近15年来地铁施工事故进行统计、整理,分析事故发生的主要因素及发展趋势.将施工事故概念化和语义化,并基于各层次概念建立地铁施工事故概念树,计算其嫡系相似度、概念相似度、属性相似度以求得不同案例之间的相似度,从而实现基于案例推理的事故案例库的建立.它的建立可以为不同单位依据自身施工环境特点,检索出相似度较高的事故案例.为地铁施工安全操作的制定、事故应急措施等都具有重要作用.
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