TBM risk management system considering predicted ground condition ahead of tunnel face: Methodology development and application

Hee Young Chung, Jeongjun Park, Seok Won Lee, Hangseok Choi, In Mo Lee

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

When using a Tunnel Boring Machine (TBM) during tunneling work, unexpected ground conditions can be encountered that are not predicted in the design stage. These reduce the stability of tunnels, and can result in considerable economic losses. This paper analyzes the potential risk events that may occur due to risky ground conditions. A resistivity survey is utilized to predict the risky ground conditions ahead of the tunnel face during construction. The potential risk events are evaluated considering both the occurrence probability and the impact. A TBM risk management system that can suggest proper solution methods for potential risk events is also developed. Multi-Criterion Decision Making (MCDM) is utilized to determine the optimal solution method to handle risk events. Lastly, an actual construction site, at which a risk event occurred during tunnel construction, is analyzed utilizing the Earth Pressure Balance (EPB) Shield TBM, to verify the efficacy of the proposed system.

Original languageEnglish
Title of host publicationITA-AITES World Tunnel Congress 2016, WTC 2016
PublisherSociety for Mining, Metallurgy and Exploration
Pages2356-2365
Number of pages10
Volume3
ISBN (Electronic)9781510822627
Publication statusPublished - 2016
EventITA-AITES World Tunnel Congress 2016, WTC 2016 - San Francisco, United States
Duration: 2016 Apr 222016 Apr 28

Other

OtherITA-AITES World Tunnel Congress 2016, WTC 2016
CountryUnited States
CitySan Francisco
Period16/4/2216/4/28

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ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Chung, H. Y., Park, J., Lee, S. W., Choi, H., & Lee, I. M. (2016). TBM risk management system considering predicted ground condition ahead of tunnel face: Methodology development and application. In ITA-AITES World Tunnel Congress 2016, WTC 2016 (Vol. 3, pp. 2356-2365). Society for Mining, Metallurgy and Exploration.