Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Preliminary study on a spoke-type EPB shield TBM by discrete element method

개별요소법을 활용한 스포크 타입 토압식 쉴드TBM의 예비 해석 연구

  • Lee, Chulho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Chang, Soo-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Choi, Soon-Wook (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Park, Byungkwan (Smart City & Construction Engineering, University of Science and Technology) ;
  • Kang, Tae-Ho (Geotechnical Engineering Research Institute, Korea Institute of Civil Engineering and Building Technology) ;
  • Sim, Jung Kil (Next Engineering & Service)
  • 이철호 (한국건설기술연구원 지반연구소) ;
  • 장수호 (한국건설기술연구원 지반연구소) ;
  • 최순욱 (한국건설기술연구원 지반연구소) ;
  • 박병관 (과학기술연합대학원대학교(UST) 스마트도시 건설융합) ;
  • 강태호 (한국건설기술연구원 지반연구소) ;
  • 심정길 ((주)넥스트이엔에스)
  • Received : 2017.10.24
  • Accepted : 2017.11.13
  • Published : 2017.11.30
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Abstract

The Discrete Element Method (DEM) is one of the useful numerical methods to analyze the behavior of the ground formation by computing the motion and interaction using particles. The DEM has not been applied in civil engineering but also a wide range of industrial fields, such as chemical engineering, pharmacy, material science, food engineering, etc. In this study, to review a performance of the spoke-type earth pressure balance (EPB) shield TBM (Tunnel Boring Machine), the commercial software based on the DEM technology was used. An analysis of the TBM during excavation was conducted according to two pre-defined excavation conditions with the different rotation speed of a cutterhead. During the analysis, the resistant torque at the face of the cutterhead, the compressive force at the cutterhead and shield surface, the muck discharge at the screw auger were measured and compared. Upon the two kinds of excavation conditions, the applicability of the DEM analysis was reviewed as a modelling method for the TBM.

개별요소법(Discrete Element Method, DEM)은 다수의 작은 입자들의 운동 및 상호영향을 계산하여 시스템의 거동을 해석하는 수치해석법으로써, 실제 화학공학, 약학, 토목공학, 재료과학, 식품공학 등 다양한 산업현장에서 적용되고 있다. 본 연구에서는 DEM 기법에 근거한 입자 역학 전용 해석 상용 소프트웨어를 사용하여 스포크타입 토압식 쉴드TBM 굴착성능을 평가하기 위한 예비 해석을 수행하였다. TBM에 대한 해석은 커터헤드의 회전속가 다른 2가지 조건에 대해 수행되었다. 해석을 진행하는 동안 커터헤드면에 작용하는 저항 토크, 커터헤드면과 쉴드면에 작용하는 압축력, 스크루 오거를 통해 배출되는 토사의 양을 검토하였다. 해석을 통해 DEM 해석을 이용한 TBM 장비 모델링의 적용성을 검토하였다.

Keywords

References

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