Further Study of Accident Causation '2-4' Model

摘要

Case study shows that there is a defect in"2-4" model which will limits its application. The defect is the module of unsafe act is not classified. The classification method of unsafe act is proposed by means of feature and characteristics of unsafe act via analysis result of 201 cases of china coal mine gas explosion accidents. According to application research, unsafe act can be divided into 4 kinds: illegal operation, illegal command, illegal action and not illegal unsafe act. Demonstration of the definition and scope of this 4 types unsafe acts has been done which can ensure the independence of content. The process of accident cases analysis confirmed that this method of unsafe act can distinguish all kinds of unsafe acts in each accident, thus, can guide to cognizing accident liability and safety training work, so as to improve the effectiveness of it.