ABSTRACT
Now, there were many risk analysis methods such as WBS-RBS method, fault tree method and so on. If the WBS-RBS method was used to analyze the risk factors of construction of very long metro line project, one very huge matrix would be established to identify the risk and the method could not distinguish relationship between the risk factors. The fault tree method also could not solve the problems. So a new risk analysis method that combined the WBS method with fault tree method was proposed. Firstly, the very long metro line project was classified according to the features of the
engineering geology and surrounding building. Then the Work Breakdown Structure method was brought forward to break down the shield tunnel construction’ works. The fault tree method was used to identify the shield tunnel construction’s risk events and risk factors, so the risk list can be established.
