터널과지하공간 (Tunnel and Underground Space)

  • 제18권6호
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  • Pages.480-490
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  • 2008
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  • 1225-1275(pISSN)
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  • 2287-1748(eISSN)
한국암반공학회 (Korean Society for Rock Mechanics and Rock Engineering)
권호 표지

균질암반에서의 유압식 천공데이터 평가

Assessment of Hydraulic Drilling Data on Homogeneous Rock Mass

  • 김광염 (한국건설기술연구원 지하구조물연구실) ;
  • 김창용 (한국건설기술연구원 지하구조물연구실) ;
  • 김광식 (한국건설기술연구원 지하구조물연구실)
  • 발행 : 2008.12.31
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초록

천공탐사는 암반 굴착시 점보드릴의 유압착암기로부터 계측되는 기계량들인 천공데이터를 분석하여 암반의 특성을 평가하는 기법이다. 천공탐사는 발파공 또는 록볼트공 천공시 실시간으로 계측할 수 있기 때문에 암반을 신속하고 정량적으로 예측 및 평가할 수 있는 장점이 있다. 현재까지도 천공데이터에 관한 다양한 연구가 수행되어져오고 있지만, 암반 특성을 평가하기 위한 천공파라미터들의 항목 선정과 기 계량들의 수치적인 정량화가 정립되어 있지 않은 실정이다. 따라서 본 연구에서는 암석 및 지반 특성을 평가할 수 있는 천공파라미터의 항목 선정 및 천공시 천공데이터들 간의 관계를 파악하기 위해 균질 모형 암석 시험편을 제작하여 천공데이터를 획득하였고, 획득된 천공데이터를 이용하여 천공파라미터들의 상관관계 분석을 수행하였다. 분석 결과를 통해 유압착암기의 굴착능력은 타격에 의해 가장 큰 영향을 받음을 확인하였다.

The drilling monitoring is a technique to assess rock mass properties by analyzing the mechanical quantities measured by drilling process. Since drilling survey can be conducted on real-time-basis for excavating blast holes or rockbolt holes, it may enables fast and quantitative prediction and evaluation of rock mass. Though a number of studies have been conducted on the drilling data, the selection of drilling parameters and numerical quantification of mechanical quantities or rock mass have not been well established yet. In this study, drilling tests were conducted with homogeneous rock specimen to identify drilling parameters and the relation of the drilling data. As a result, it is verified that above all drilling parameters, the percussion was the most important factor on the excavatability of hydraulic drilling.

키워드

참고문헌

  1. 김낙영, 김성환, 정형식, 2001, 도로터널에서 지보패턴별 굴착지수 상관관계 고찰, 한국터널공학회 터널기술논문집, Vol. 3, No. 14, pp. 17-24
  2. Barr, M. V., 1984, Instrumented horizontal drilling for tunnelling site investigations. Ph.D. thesis, Imperial College of Science and Technology, London, U.K
  3. Brown, E.T. and Barr, M.V., 1978, Instrumented Drilling as an Aid to Site Investigations, Proc. 3rd Int'l. Congr., Int'l. Assoc. Engng
  4. Deveaux, Martin et al., 1983, Instantaneous Logging in Water Survey, Bull, of Int'l. Assoc. Of Engng. Geol., No. 26-27, pp. 59-63
  5. Kahraman, S., Balc, C., Yazc, S., Bilgin, N., 2000, Prediction of the penetration rate of rotary blast hole drills using a new drillability index, Int. J. Rock Mech. Min. Sci. 37, pp. 729-743 https://doi.org/10.1016/S1365-1609(00)00007-1
  6. K. Y. Kim, K. S. Kim, C. Y. Kim and D. G. Kim, 2008, Prediction of Rock Mass Properties Ahead of Tunnel Face Using Drilling Parameter, 13th Australian Tunnelling Conference, pp. 203-207
  7. Leighton, J. C., 1983, Correlating Rotary Drill Performance to Powder Factors for Improved Blasting Control, 36th Cdn. Geotech. Conf., Vancouver, B.C., June 1983, pp. 4.1.1-4.1.10
  8. Mituisumitomo corporation, 2005, Tunnel rock mass evaluation that uses Drill-Logging system, Proceedings of the 60th Symposium, Japan Society of Civil Engineers, pp. 9-10
  9. Peck, J. and Vynne, J. F., 1993, Current status and future trends of monitoring technology for drills, Proceedings Int. Mining Geology Con., Kalgoorlie, Australia. pp. 311-325
  10. Pfister, P., 1985, Recording drilling parameters in ground engineering, Geodrilling, pp. 8-14
  11. Schunnesson, H., 1996, RQD predictions based on drill performance parameters, Tunnelling and Underground Space Technology, Vol. 11, No. 3, pp. 345-351 https://doi.org/10.1016/0886-7798(96)00024-7
  12. Schunnesson, H., 1998, Rock characterisation using percussive drilling, Int. J. Rock Mech. Min. Sci. Vol. 35, No. 6. pp. 711-725 https://doi.org/10.1016/S0148-9062(97)00332-X
  13. Schunnesson, H. and Holme, K., 1997, Drill monitoring for geological mine planning in the Viscaria copper mine, Sweden. CIM Bull., 90, pp. 83-89
  14. Schunnesson, H. and Sturk, R., 1997, Drill Monitoring at the Hallandsas Project in Sweden, Research Report, Vol. 21, Lilea University of Technology, Sweden
  15. Scoble, M. J. and Peck, J., 1987, A technique for ground characterization using automated production drill monitoring, Int. Journal of Surface Mining 1: pp. 31-54
  16. Scoble, M. J., Peck, J. and Hendricks, C., 1989, Correlation between rotary drill performance parameters and Borehole geophysical logging, Mining Science and Technology, 8, 301-312 https://doi.org/10.1016/S0167-9031(89)90448-9
  17. Tamrock 1999, Rock excavation handbook for civil engineering, pp. 62-70
  18. Thuro K., 1997, Drillability prediction-geological influence in hard rock drill and blast tunneling, Geol. Rundsch. Vol. 86, pp. 426-438 https://doi.org/10.1007/s005310050151
  19. Thuro K., 2003, Hard rock tunnel boring, cutting, drilling and blasting : rock parameters for excavatability, ISRM-Technology roadmap for rock mechanics, pp. 1227-1234
  20. Toda corporation, 2005, Prediction of Geological condition forward of tunnel face with drilling data, Proceedings of the 60th Symposium, Japan Society of Civil Engineers, pp. 13-14