Risk assessment on man-machine-environment system of tunnel construction
Mingfeng Lei · Journal of Central South University(Science and Technology) · 2012
Man-machine engineering theory was applied to comprehensively evaluate tunnel construction risk.Definition of man sub-system,machine sub-system and environment sub-system was discussed separately,and an open assessment factor system was established based on related norms,expert method and tunnel construction technology.The assessment flow chart is as follows.Experts weight was first qualified considering factors such as academic background,professional title and working time.Index layer risk was then determined by expert method,and its factor weight was calculated by entropy measurement.Rule layer weight was determined using expert method and AHP,then risk assessment in different layer was made.From the man-machine-environment view,the model was used to evaluate a tunnel risk.The results show the model is reasonable,and some prevention measures are also proposed according to assessment results.