New approach on prediction of fault zone ahead of tunnel face by using $x-R_s$ control chart for RMR parameters

RMR 변수의 $x-R_s$ 관리도 분석을 통한 굴착면 전방 단층대 예측 기법

  • 임성빈 (한국건설기술연구원 지반연구실) ;
  • 김광염 (한국건설기술연구원 지반연구실) ;
  • 김창용 (한국건설기술연구원 지반연구실) ;
  • 서용석 (충북대학교 지구환경과학과)
  • Received : 2010.11.11
  • Accepted : 2010.11.26
  • Published : 2010.11.30

Abstract

A new approach for prediction of a fault zone ahead of tunnel face by using statistical control charts is suggested and applied to the construction site. $x-R_s$ control charts of RMR parameters were investigated as approaching and passing through fault zone. The abnormal signal from the control charts was observed and analyzed based on statistical criteria. Fault zones in the application area were predicted in advance using this method and it was verified by comparing with observation data like horizontal boring and face mapping.

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