Evolution Research Of Safety Risk In Subway Construction

With the rapid development of cities, subway construction projects are built.in mostof economically developed cities. Because generally characterized by long time span,difficult technique and complex construction environment, subway construction projectswill be confronted with kinds of safety risk. Therefore, to explore the mechanism ofsubway engineering construction safety accident, clarify objects of subway constructionrisk management, build safety risk evolutionary analysis model of subway constructionsystem, has become some problem to be solved. In this paper, the research of safety riskevolutionary analysis based on safety information had been done.Firstly, started with safety accident analysis of subway construction, guided byaccident-causing theory, the different kinds of safety accident had been studied. Thecauses of safety accident in subway construction have been summarized to four aspects:human factors, machine factors, environment factors and management factors. Thus, theobject of subway construction risk management has been determined.Secondly, the definition of the safety information has been described based on thedefinition and feature of information. And safety information divided into four categoriesin consideration of safety accident reason analysis, such as human safety information,machine safety information, environment safety information and management safetyinformation. Then the workflow of safety information management has been studied ininformation age.Finally, the rules of influence of single factor in system have been investigated, thathelps to build single factor safety risk evolution model. Also the mechanism of safetyaccident in subway construction has been investigated, that helps to build safety accidentmodel. Then, safety risk evolutionary analysis model of subway construction system hasbeen set up supported by the above results. In the end, the model was applied in theempirical research in the selected subway engineering.