Predicting anomalous zone ahead of TBM tunnel face utilizing electrical resistivity

Jinho Park, Kang Hyun Lee, Byung Kyu Kim, Seoung Won Lee, In Mo Lee

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

Abstract

In this study, the TBM Resistivity Prediction (TRP) system is developed for predicting the location, thickness, permittivity ratio and electrical conductivity of anomalous zones ahead of tunnel face using the measured resistivity of the ground. The applicability of the developed system was verified by performing field tests at a construction site in which an EPB-shield TBM is used for tunnelling work. In the first field test, it was found that the rock around the tunnel face had the same resistivity and permittivity with the rock ahead of the tunnel face indicating no anomaly ahead of the tunnel face. In the second test, a stronger zone 5-m thick was predicted ahead of the tunnel face based on lower permittivity than that of the rock around the tunnel face. The ground condition assessed by the newly developed TRP system matched well with that either predicted from geophysical exploration or directly obtained from drilling boreholes or from daily observed muck conditions.

Original languageEnglish
Title of host publicationITA-AITES World Tunnel Congress 2016, WTC 2016
PublisherSociety for Mining, Metallurgy and Exploration
Pages1955-1964
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

ASJC Scopus subject areas

  • Civil and Structural Engineering

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  • Cite this

    Park, J., Lee, K. H., Kim, B. K., Lee, S. W., & Lee, I. M. (2016). Predicting anomalous zone ahead of TBM tunnel face utilizing electrical resistivity. In ITA-AITES World Tunnel Congress 2016, WTC 2016 (Vol. 3, pp. 1955-1964). Society for Mining, Metallurgy and Exploration.