Abstract:

In order to improve the safety management effect of subway construction and reduce the occurrence of subway collapse accidents, the risk factors of subway construction accidents were analyzed. Firstly, the multi-factor coupling mode of 'human' and 'object' in accident causation were analyzed systematically. On this basis, with the help of accident causation 24Model and GSM, the management model of safety system was constructed. Finally, the multi-factor coupling failure mode of human-object system was applied to 16 existing subway construction collapse accidents. The multi-factor coupling mode and action path of 14 "human" reasons and 6 "object" reasons were given respectively, and their risk levels were calculated. The results show that there are 6 modes and 14 action paths for the multi-factors coupling effect of "human" and "object" in subway construction. The management model is divided into the target layer and the matching layer between the cause of the accident and the safety defense line. The matching layer is constructed from three levels: micro matching, medium matching and macro matching. Based on the established safety system management model of subway construction, the "three defense lines" of subway collapse accident safety construction management were given.

Key words: multi-factor coupling, failure mode, subway construction, safety system, collapse accident, "2-4" model (24Model), generalized security model (GSM)