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Relationship between brittleness index of hard rocks and TBM penetration rates

경암의 취성도와 TBM 순굴진율간의 관계

  • Lee, Gi-Jun (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Kwon, Tae-Hyuk (Dept. of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology (KAIST)) ;
  • Kim, Kyoung-Yul (Korea Electric Power Research Institute (KEPRI)) ;
  • Song, Ki-Il (Dept. of Civil Engineering, Inha University)
  • 이기준 (한국과학기술원 건설및환경공학과) ;
  • 권태혁 (한국과학기술원 건설및환경공학과) ;
  • 김경열 (한국전력연구원) ;
  • 송기일 (인하대학교 토목공학과)
  • Received : 2017.06.30
  • Accepted : 2017.07.28
  • Published : 2017.07.31

Abstract

In rapid urbanization, demand for utility tunnel increases more, and tunnel boring machine (TBM) has been used widely. Prediction of TBM penetration rate is important for proper estimation of construction period and cost. Although there are several methods, such as NTNU model and CSM model that require many input parameters, fundamental understanding on correlations between rock properties and TBM penetration rate is critical. In this study, we explored the brittleness indices of hard rocks according to various definitions, and the correlations between the brittleness indices and the TBM penentration rates.

Acknowledgement

Grant : 도심지 소단면(Φ 3.5 m급) 터널식 공동구 설계 및 시공 핵심기술 개발

Supported by : 국토교통과학기술진흥원

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