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

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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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

  • Chang, Soo-Ho (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Choi, Soon-Wook (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Park, Young-Taek (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Lee, Gyu-Phil (Geotechnical Engineering Research Division, Korea Institute of Construction Technology) ;
  • Bae, Gyu-Jin (Geotechnical Engineering Research Division, Korea Institute of Construction Technology)
  • 장수호 (한국건설기술연구원 Geo-인프라연구실) ;
  • 최순욱 (한국건설기술연구원 Geo-인프라연구실) ;
  • 박영택 (한국건설기술연구원 Geo-인프라연구실) ;
  • 이규필 (한국건설기술연구원 Geo-인프라연구실) ;
  • 배규진 (한국건설기술연구원 Geo-인프라연구실)
  • Received : 2013.04.16
  • Accepted : 2013.05.08
  • Published : 2013.05.31
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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.

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.

Keywords

References

  1. Balci, C., Tumac, D. (2012), "Investigation into the effects of different rocks on rock cuttability by a V-type disc cutter", Tunnelling and Underground Space Technology, Vol. 30, pp. 183-193. https://doi.org/10.1016/j.tust.2012.02.018
  2. Chang, S.-H., Choi, S.-W., Park, Y.-T., Lee, G.-P., Bae, G.-J. (2012), "Characterization of the deformation of a disc cutter in linear rock cutting test", Journal of Korean Tunnelling and Underground Space Association, Vol. 14, No. 3, pp. 197-213. https://doi.org/10.9711/KTAJ.2012.14.3.197
  3. Cho, J.-W., Yu, S.-H., Jeon, S., Chang, S.-H. (2008), "Numerical study on rock fragmentation by TBM disc cutter", Journal of Korean Tunnelling and Underground Space Association, Vol. 10, No. 2, pp. 1-14.
  4. Entacher, M., Winter, G., Bumberger, T., Decker, K., Godor, I., Galler, R. (2012), "Cutter force measurement on tunnel boring machines - System design", Tunnelling and Underground Space Technology, Vol. 31, pp. 97-106. https://doi.org/10.1016/j.tust.2012.04.011
  5. Farrokh, E., Rostami, J., Laughton, C. (2012), "Study of various models for estimation of penetration rate of hard rock TBMs", Tunnelling and Underground Space Technology, Vol. 30, pp. 110-123. https://doi.org/10.1016/j.tust.2012.02.012
  6. Gertsch, R., Gertsch, L., Rostami, J. (2007), "Disc cutting tests in Colorado Red Granite: Implications for TBM performance prediction", International Journal of Rock Mechanics & Mining Sciences, Vol. 44, pp. 238-246. https://doi.org/10.1016/j.ijrmms.2006.07.007
  7. Leitner, W., Schneider, E. (2003), "Penetration Prediction Models for Hard Rock Tunnel Boring Machines", Felsbau, Vol. 21, pp. 8-13.
  8. Nishimatsu, Y., Okuno, N. and Hirasawa, Y. (1975), "The rock cutting with roller cutters", J. of MMIJ, Vol. 91, pp. 653-658.
  9. Rostami, J. (2013), "Study of pressure distribution within the crushed zone in the contact area between rock and disc cutters", International Journal of Rock Mechanics & Mining Sciences, Vol. 57, pp. 172-186. https://doi.org/10.1016/j.ijrmms.2012.07.031
  10. Rostami, J. (1997), "Development of a force estimation model for rock fragmentation with disc cutters through theoretical and physical measurement of crushed zone pressure", Ph.D Dissertation, Colorado School of Mines, Golden, Colorado, pp. 68-69.
  11. Rostami, J., Ozdemir, L., Nisen, B. (1996), "Comparison between CSM and NTH hard rock TBM performance prediction models", Proc. of ISDT 1996, Las Vegas NV, pp. 1-11.
  12. Rostami, J. Ozdemir, L. (1993), "A new model for performance prediction of hard rock TBMs", Proc. of Rapid Excavation and Tunneling Conference (RETC), Boston, USA, pp. 793-809.
  13. Snowdon, R.A., Ryley, M.D., Temporal, J. (1982), "A study of disc cutting in selected british rocks", Int. J. Rock Mech. Min. Sci. & Geomech. Abstr., Vol. 19, pp. 107-121.
  14. You, S.-H., Chang, S.-H., Cho, J.-W., Jeon, S. (2008), "Estimation of the optimum TBM disc cutter spacing by the dynamic fracture modeling", Journal of Korean Tunnelling and Underground Space Association, Vol. 10, No. 1, pp. 81-90.

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