Research on the Emergency Decision-making Method for the Safety Accidents in Subway Construction Based on CBR

Research purposes: There are many factors with complex association relationship involved in the safety of subway construction, so it is difficult to extract the rules for causal relationship of accidents directly, which increases the difficulty in emergency disposal decision-making of accidents. To cope with the dilemma of emergency decision-making of safety accidents in subway construction, this paper analyzes the occurrence mechanism of accidents in subway construction, builds a case representation model, and proposes a case retrieval strategy and a case similarity calculation method based on CBR. Research conclusions: (1) According to analysis of the occurrence mechanism of accidents in subway construction based on disaster system theories, subway engineering accident is the result of combined action of three factors including disaster environment, disaster factor and disaster-bearing body. (2)A multi-level case structured representation model is put forward based on the feature analysis on the accidents in subway construction to provide base for case retrieval. (3)Accident cases in subway construction are of the characters of multi-feature attribute and multi-type, while two-level retrieval strategy can improve the efficiency and effectiveness of case retrieval. (4)The research results can provide support and reference for emergency decision making of accidents in subway construction. © 2018, Editorial Department of Journal of Railway Engineering Society. All right reserved.