International Journal of Earth Sciences and Engineering

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The shield construction is used from Xitieying staiton to You'anmen outside station in a subway project in Beijing (hereafter, the Project). The risk identification revealed 10 major types of hazards that may arise from shield tunneling in the Project. The P=R×C  risk assessment method is adopted to carry out the risk grading of engineering, and the main factors of risk are the four Class 4 hazards, i.e. underground pipeline damage (u2), surface subsidence (u3) and shield spewing out water (u4), as well as one Class 5 hazard, i.e. damage to surrounding buildings or structures (u1). The method combines the qualification with quantification, localizes every rick factor and then guild the risk control and management.

Keywords

Risk Assessment, Fuzzy Comprehensive Evaluation, Risk Identification.
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