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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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Characterization of the deformation of a disc cutter in linear rock cutting test

암석의 선형절삭실험에 의한 디스크커터의 변형특성 평가

  • 장수호 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 최순욱 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 박영택 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 이규필 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실) ;
  • 배규진 (한국건설기술연구원 SOC성능연구소 Geo-인프라연구실)
  • Received : 2012.04.21
  • Accepted : 2012.05.16
  • Published : 2012.05.31
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Abstract

Disc cutter is a key cutting tool for rock excavation by TBMs. This study aimed to characterize the deformation of a cutter ring by strain measurement as well as infrared thermal camera measurement during a series of linear cutting tests for a hard rock. The strain measurement results indicated that the cutter ring clearly showed a linear elastic behavior. The data obtained from the infrared thermal camera measurement demonstrated that the maximum temperature increase in the cutter ring was below $14.4^{\circ}C$. The deformation and temperature increase of the cutter ring during rock cutting were insignificant in a given cutting test condition of this study.

디스크커터는 암석의 절삭을 위해 TBM에 사용되는 핵심 굴착도구이다. 본 연구에서는 디스크커터에 의한 암석의 절삭 시에 커터 링에 발생하는 변형특성을 파악하기 위하여, 경암에 대한 선형절삭실험 시에 커터 링에 부착한 일련의 변형률게이지와 적외선 열화상 카메라에 의한 계측을 실시하였다. 실험결과, 커터 링은 매우 뚜렷한 선형탄성 거동을 보였으며, 암석 절삭에 의한 커터 링의 온도 상승은 $14.4^{\circ}C$ 이내로 나타났다. 따라서 본 연구에서 수행한 선형절삭실험 조건에서는 절삭으로 인한 커터 링의 변형과 온도상승이 크지 않았음을 알 수 있었다.

Keywords

References

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