A Causal Network-Based Risk Matrix Model Applicable to Shield TBM Tunneling Projects

Heeyoung Chung, Jeongjun Park, Byung-Kyu Kim, Kibeom Kwon, In-Mo Lee and Hangseok Choi
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Heeyoung Chung: Technology Research Team, Incheon International Airport Corporation, Incheon 22382, Korea
Jeongjun Park: Advanced Infrastructure Research Team, Korea Railroad Research Institute, Uiwang 16105, Korea
Byung-Kyu Kim: Advanced Infrastructure Research Team, Korea Railroad Research Institute, Uiwang 16105, Korea
Kibeom Kwon: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea
In-Mo Lee: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea
Hangseok Choi: School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea

Sustainability, 2021, vol. 13, issue 9, 1-23

Abstract: The present study compares and analyzes three risk analysis models that are applicable to shield tunnel boring machine (TBM) tunneling, and thus proposes an improved risk matrix model based on the causal networks applicable to sustainable tunnel projects. The advantages and disadvantages of three risk analysis models are compared, and causal networks are structured by analyzing the causal relationship between risk factors and risk events. Based on the comparison and analysis results, the causal network-based risk matrix model (CN-Matrix model), which complements the disadvantages and exploits the advantages of the three existing models, is proposed in this paper. Furthermore, this study suggests a means of modifying the weighting scores in the estimation of the risk score, which permits the CN-Matrix model to determine the risk level more reasonably. Thus, the improved CN-Matrix model is more reliable and robust compared to the three existing models.

Keywords: shield tunnel boring machine (TBM); risk analysis; risk matrix; causal network; CN-Matrix model; fault tree analysis (FTA); analytic hierarchy process (AHP); Bayesian network; shield TBM risk analysis model (STRAM) (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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