Research On Emergency Chain Reaction Model Based On Knowledge Unit

In recent years, various kinds of emergencies are occuring frequently, and emergency chain reaction has brought huge damage and loss to the human society. Emergencies are the object of emergency management, all levels of government and academia have paid much attention to the research of emergency. However, there are two main limitations in the related research:First, most research focus on the specific emergencies, such as natural disasters chain, the one which is studied most widely. Second, the related studies are almost based on a conceptual level of events, which doesn’t take the object things system environment into account. In fact, in different states of environment, event chain reaction also maybe different.Given the situation of the current research, this paper studies emergency chain reaction from the level of knowledge, building a event chain reaction model based on knowledge unit. First, the unit emergency and environment element which are the component parts of the process of emergency chain reaction are described. Then, the paper builds a unit emergency model and a knowledge unit model of the objective things system based on the common knowledge model. Second, the definition of emergency chain reaction is proposed, the mechanisms of event’s occurrence and event chain reaction are analyzed in this paper. Later, it proposes a formal descriptive model of event chain reaction. And it also describes the model of relationship between unit event and objective things system. Based on the above related models, this paper proposes a reasoning method of emergency chain reaction process. At last, it takes landslide for example to show the application of the model.The study is of great significance. It provides emergency managers with knowledge about the regular pattern of emergency’s occurrence, development, and evolution, which is of benefit to enhance the validity of emergency management work. At the same time, it supports the system simulation of emergency chain reaction. And the knowledge about emergency management is stored based on knowledge unit, which will be beneficial to realize the deduction of emergencies chain reaction process in computer platform.