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2013 Vol.15, Issue 3 Preview Page
Experimental evaluation of the effects of cutting ring shape on cutter acting forces in a hard rock

커터 링의 형상에 따른 디스크커터 작용력의 실험적 평가

Soo-Ho Chang1
,
Soon-Wook* Choi2*
,
Young-Taek Park3
,
Gyu-Phil Lee3
,
Gyu-Jin Bae4
장 수호1
,
최 순욱*2*
,
박 영택3
,
이 규필3
,
배 규진4
1Geotechnical Engineering Research Division, Korea Institute of Construction Technology, Research Fellow
2Geotechnical Engineering Research Division, Korea Institute of Construction Technology, Researcher
3Geotechnical Engineering Research Division, Korea Institute of Construction Technology, Senior Researcher
4Geotechnical Engineering Research Division, Korea Institute of Construction Technology, Senior Research Fellow
1한국건설기술연구원 Geo-인프라연구실 연구위원
2한국건설기술연구원 Geo-인프라연구실 전임연구원
3한국건설기술연구원 Geo-인프라연구실 수석연구원
4한국건설기술연구원 Geo-인프라연구실 선임연구위원
*교신저자. *Corresponding Author. 
31 May 2013. pp. 225-235
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Abstract

Cutter forces acting on a disc cutter in TBM are the key parameters for TBM design and its performance prediction. This study aimed to experimentally evaluate cutter forces with different ring shapes in a hard rock. The stiffness of a cutter ring was indirectly estimated from a series of full-scale linear cutting tests. From the experiments, it was verified that the rolling stress acting on a V-shape disc cutter was much higher than on a CCS disc cutter even though the penetration depth by a V-shape disc cutter could be increased in the same cutting condition. Finally, it is suggested that a prediction model considering the shape parameters of a disc cutter should be used for its better prediction.

Keywords
Disc cutter
TBM
Cutter ring
Cutter acting force
SCCS
V shape

TBM의 암반 굴착도구인 디스크커터의 작용력은 TBM의 설계와 굴진성능 평가를 위해 핵심적인 항목이다. 본 연구에서는 디스크커터 링의 형상에 따른 디스크커터 작용력의 차이를 실물 선형절삭실험에 의해 실험적으로 분석하였다. 또한 절삭실험 중에 발생하는 커터 링의 변형률을 계측하여 커터 링의 강성을 추정하였다. 분석결과, V형상의 디스크커터를 사용하게 되면 동일한 절삭조건에서 커터 관입깊이를 증가시킬 수는 있지만, 커터의 회전방향으로 큰 응력이 작용하는 것으로 나타났다. 또한 커터 작용력을 예측모델에 의해 추정할 경우에는, 디스크커터의 형상과 관련된 변수들을 고려할 수 있는 모델을 사용하는 것이 타당함을 알 수 있었다.

키워드
디스크커터
TBM
커터 링
커터 작용력
CCS
V형상
References
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 15
  • No :3
  • Pages :225-235
  • Received Date : 2013-04-16
  • Revised Date : 2013-05-02
  • Accepted Date : 2013-05-08
  • DOI :https://doi.org/10.9711/KTAJ.2013.15.3.225
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