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Article

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

1
Technology Research Team, Incheon International Airport Corporation, Incheon 22382, Korea
2
Advanced Infrastructure Research Team, Korea Railroad Research Institute, Uiwang 16105, Korea
3
School of Civil, Environmental and Architectural Engineering, Korea University, Seoul 02841, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Sotiris Argyroudis
Sustainability 2021, 13(9), 4846; https://doi.org/10.3390/su13094846
Received: 22 February 2021 / Revised: 9 April 2021 / Accepted: 9 April 2021 / Published: 26 April 2021
(This article belongs to the Special Issue Geotechnical Engineering towards Sustainability)
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. View Full-Text
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) 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)
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MDPI and ACS Style

Chung, H.; Park, J.; Kim, B.-K.; Kwon, K.; Lee, I.-M.; Choi, H. A Causal Network-Based Risk Matrix Model Applicable to Shield TBM Tunneling Projects. Sustainability 2021, 13, 4846. https://doi.org/10.3390/su13094846

AMA Style

Chung H, Park J, Kim B-K, Kwon K, Lee I-M, Choi H. A Causal Network-Based Risk Matrix Model Applicable to Shield TBM Tunneling Projects. Sustainability. 2021; 13(9):4846. https://doi.org/10.3390/su13094846

Chicago/Turabian Style

Chung, Heeyoung, Jeongjun Park, Byung-Kyu Kim, Kibeom Kwon, In-Mo Lee, and Hangseok Choi. 2021. "A Causal Network-Based Risk Matrix Model Applicable to Shield TBM Tunneling Projects" Sustainability 13, no. 9: 4846. https://doi.org/10.3390/su13094846

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