Laboratory simulations on hybrid non-destructive survey of electrical resistivity and induced polarization to predict geological risks ahead of a TBM tunnel

Minkyu Kang, Junho Lee, Kibeom Kwon, Sangyeong Park, Hangseok Choi

Research output: Contribution to journalArticlepeer-review

Abstract

It is essential to predict geological risks ahead of a tunnel face during tunnel boring machines (TBMs) excavation to ensure efficient and stable tunnel construction. In this study, a series of lab-scale chamber experiments were conducted to simulate the electrical resistivity and induced polarization (IP) surveys during TBM advancement toward hazardous ground conditions. Various hazardous ground conditions (i.e., fault zones, water intrusion, geological transition, embedded core-stone, and cavities) possibly encountered during tunnel excavation were modeled in the soil chamber. The electrical resistivity and chargeability were simultaneously measured at the tunnel face modeled in the laboratory chamber during tunnel excavation. Guidelines for accurately predicting the hazardous conditions were proposed by analyzing the patterns and variations in resistivity and chargeability measurements corresponding to the TBM advancement. Note that the combined approach simultaneously implementing the electrical resistivity and IP surveys can predict hazardous ground conditions ahead of a tunnel face, which allows safe tunnel excavation by minimizing the potential risks in advance.

Original languageEnglish
Article number105066
JournalTunnelling and Underground Space Technology
Volume135
DOIs
Publication statusPublished - 2023 May

Bibliographical note

Funding Information:
This research was supported by the National R&D Project for Smart Construction Technology (No. 23SMIP-A158708-04) and for Consecutive Excavation Technological Development Project of Tunnel Boring Machine (RS-2022-00144188) funded by the Korea Agency for Infrastructure Technology Advancement under the Ministry of Land, Infrastructure, and Transport and managed by the Korea Expressway Corporation.

Publisher Copyright:
© 2023

Keywords

  • Electrical resistivity survey
  • Hazardous ground conditions
  • Induced polarization survey
  • Laboratory chamber test
  • Tunnel boring machine

ASJC Scopus subject areas

  • Building and Construction
  • Geotechnical Engineering and Engineering Geology

Fingerprint

Dive into the research topics of 'Laboratory simulations on hybrid non-destructive survey of electrical resistivity and induced polarization to predict geological risks ahead of a TBM tunnel'. Together they form a unique fingerprint.

Cite this