An evidence-based risk decision support approach for metro tunnel construction

    Yifan Guo Affiliation
    ; Junjie Zheng Affiliation
    ; Rongjun Zhang Affiliation
    ; Youbin Yang Affiliation


The risk-informed decision-making of metro tunnel project is often faced with the problem of inadequate utilization of available information. In order to address the epistemic uncertainty problem caused by insufficient utilization of information in decision-making, this paper proposes a risk decision support approach for metro tunnel construction based on Continuous Time Bayesian Network (CTBN) technique. CTBN can factor the state space of variables in tunnel projects and perform evidence-based reasoning, which enables the diverse information of expert opinions, project-specific parameters, historical data and engineering anomalies to be the evidence to support decision-making. A concise CTBN model development method based on Dynamic Fault Trees is presented to replace the cumbersome model learning process. The proposed approach can utilize multi-source information as evidence to provide multi-form decision support both in the pre-construction stage and construction stage of the tunnel construction project, and the results can support the decisions on judging the acceptability of the risk, developing response strategies for risk factors and diagnosing the causes of the hazardous event. A case study on the water leakage risk of tunnel construction in China is presented to illustrate the feasibility of the approach. The case study shows that the approach can assist in making informed decisions, so as to improve the engineering safety.

Keyword : Continuous Time Bayesian Network, evidence, risk-informed decision-making, tunnel construction, knowledge, multi-source information

How to Cite
Guo, Y., Zheng, J., Zhang, R., & Yang, Y. (2022). An evidence-based risk decision support approach for metro tunnel construction. Journal of Civil Engineering and Management, 28(5), 377–396.
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May 3, 2022
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