Tunnel and Underground Space (터널과지하공간)

Korean Society for Rock Mechanics and Rock Engineering (한국암반공학회)
권호 표지

Investigation of Some Blast Design and Evaluation Parameters for Fragmentation in Limestone Quarries

석회석 광산의 파쇄도 관련 발파설계 및 평가 변수들에 대한 고찰

  • Rai, Piyush (Dept. of Energy & Resources Eng., Chonnam National University, Dept. of Mining Eng., Banaras Hindu University) ;
  • Yang, Hyung-Sik (Dept. of Energy & Resources Eng., Chonnam National University)
  • ;
  • 양형식 (전남대학교 에너지자원공학과)
  • Received : 2010.05.26
  • Accepted : 2010.06.16
  • Published : 2010.06.30
Download PDF
⟨ Previous Next ⟩

Abstract

The present paper highlights some important fragmentation issues experienced in the limestone quarry blast rounds. In light of these major issues, the paper outlines influence of a few important design parameters, which bear merit to alter the blast performance in order to duly resolve the issues in field scale blast rounds. A comprehensive field based program for evaluation of such blast rounds has also been suggested. The knowledge disseminated in the paper, backed up by sufficient images, is largely based on the experience of the authors, while designing, implementing and evaluating numerous field scale blast rounds in cement grade limestone quarries.

이 논문은 석회석 광산의 발파 중에 일어나는 파쇄도 관련 문제들에 대하여 고찰한 것이다. 먼저 실 규모 발파 시에 발파 결과를 크게 달리 할 수 있는 중요 발파설계변수를 추출하였다. 또 현장에서 간편하게 적용할 수 있는 발파 성과 평가 방법을 제시하였다. 이는 저자들이 시멘트 제조를 위한 석회석 광산에서 다양한 규모로 설계, 시공, 평가 한 경험에 근거한 것이다.

Keywords

References

  1. Ash, R.L., 1963, The mechanics of rock breakage, pt I-IV, Pit & Quarry, 56, pp 98-100, 112, 118-123, and 126-131.
  2. Ash, R.L. and N.S. Smith, 1976, Changing borehole length to improve breakage – A case history, Proc. 2nd SEE Conf. Expl. & Blast. Tech., Louisville, Kentucky, 1-12.
  3. Bhandari, S. and V.S. Vutukuri, 1974, Rock fragmentation with longitudinal explosive charges, Proc. 3rd Cong. Int. Soc. Rock Mech., Denver, 2.B 1323-1342.
  4. Bhandari, S., 1997, Engineering rock blasting operations, A.A. Balkema, Rotterdam.
  5. Brown, T.R., 1973, Open cut drilling and blasting practice at H.I. Pty. Ltd. Paper presented at Workshop Course on Drilling and blasting, Aust. Min. Found. Inc., Adelaide, 11 p.
  6. Chiapetta, R.F. and C. Postupack, 1995, An update on causes and recommendations for controlling coal damage when blasting overburden, Proc. Explo-95, Brisbane, AusIMM 345-360.
  7. Dick, R.A., L.R. Fletcher, and D.V. D'Andrea, 1973, A study of fragmentation from bench blasting in limestone at a reduced scale., U.S.B.M. R.I. No. 7704, 24 p.
  8. Hagan, T.N., 1983, The influence of controllable blast parameters on fragmentation and mining costs, Proc. 1st Int. Symp. on Rock Fragmentation by Blasting, Lulea, Sweden, 31-51.
  9. Jhanwar, J.C., A.K. Chakraborty, H.R. Ani Reddy, and J.L. Jethwa, 1999, Application of air decks in production blasting to improve fragmentation and economies of an open pit mine, Geotech. & Geol. Engg. Jl., 417, 37-57.
  10. Jhanwar, J.C., J.L. Jethwa, and A.H. Reddy, 2000, Influence of air deck blasting on fragmentation in jointed rocks in an open-pit manganese mine, Engg. Geol. Jour. 57. 13-29. https://doi.org/10.1016/S0013-7952(99)00125-8
  11. Jimeno, C.L., E.L. Jimeno, and F.J.A. Carcedo, 1995, Drilling and blasting of rocks, A.A. Balkema, Rotterdam.
  12. Kanchibotla, S.S., 2001, Optimum blasting? Is it minimum cost per broken rock or maximum value per broken rock? Proc. Explo-2001, NSW, AusIMM. 35-40.
  13. Konya, C.J. and E.J. Walter, 1990, Surface blast design, Prentice Hall, Englewood Cliffs.
  14. Konya, C.J., 1996, Problems with deck loaded blast holes, Eng. & Min Jl., 73.
  15. Langefors, U., 1965, Fragmentation in rock blasting, Proc. 7th Symp. on Rock Mechanics, Pennsylvania State University, Pennsylvania, 1-21.
  16. Lindgren, G. and P. Travis, 1971, Mechanization at Reustrom, Mining Magazine, 125.3, 188-197.
  17. Maerz, H.N., J.A. Franklin, L. Rothenburg and D.L. Coursen, 1987, Measurement of rock fragmentation by digital photoanalysis, 5th Int. Cong. Int. Soc. Rock Mech., 687-692.
  18. Maerz, N.H., 1990, Photoanalysis of rock fabric, Ph.D. thesis, Dept. of Earth Sciences, Univ. of Waterloo.
  19. Marton, A. and R.A. Crookes, 1999, Case study in optimizing fragmentation, The AusIMM Procs, 1. 35-43.
  20. Oliver, P.H., 2003, Changes to drill pattern and adequate inter-row delay time improve blasting performance, Canadian Institute of Mining (CIM) Bulletin, 96. 60-65.
  21. Ouchterlony, F., 1995, Review of rock blasting and explosives engineering research at Sve De Fo, Proc. Explo-95, Brisbane, AusIMM, 133-146.
  22. Pugliese, J.M., 1972, Designing blast patterns using empirical formulas, USBM IC 8550, 33p.
  23. Rai, P. and H.S. Yang, 2009, Blast design vis-à-vis evaluation of fragmentation by indirect methods in a limestone quarry, Proc. Korea-Japan Joint Symp. on Rock Engineering, 299-306.
  24. Rai, P. 2008, Investigation of various firing patterns on different sand stone benches of a surface coal mine – a case study, Blasting & Fragmentation Jl. (formerly Fragblast Journal), ISEE Pub, 2.2, 127-145.
  25. Rai, P. and S.S. Baghel, 2004, Investigation of firing patterns on fragmentation in Indian opencast limestone mine, Quarry Management, 21-30.
  26. Rai, P., 2002, Evaluation of effect of some blast design parameters on fragmentation in opencast mine, Ph.D. thesis, Banaras Hindu University, Varanasi.
  27. Rai, P. and F.L. Imperial, 2005, Mesh area vis-à-vis blast performance in a limestone quarry - a case study, Fragblast, The Int. Jl. for Blasting and Fragmentation, 9.4, 219-232.
  28. Scott, A., G. Chitombo and T. Kleine, 1996, The challenge of the prediction and control of fragmentation in mining, Proc. 4th Int. Symp. on Rock Fragmentation by Blasting (Fragblast-4), Vienna, Austria, 507-518.
  29. Singh, S.P. and T. Yalcin, 2002, Effect of muck size distribution on scooping operations, J. Int. Soc. Expl. Engrs., 1. 315-325.
  30. Smith, N.S., 1976, Burden rock stiffness and its effects on fragmentation in bench blasting, Ph.D. thesis, Univ. of Missouri, USA.
  31. Tansey, D.O., 1980, A delay sequencing blasting system, Proc. 6th SEE Conf. Expl. & Blasting Tech., Florida, 345-374.
  32. Wang, W., F. Bergholm and O. Stephansson, 1996, Image analysis of fragment size and shape, Proc. Fragblast-5, Montreal, 233-243.
  33. Williamson, S., C. McKenzie and H. O'Loughlin, 1983, Electric shovel performance as a measure of blasting efficiency, Proc. 1st Int. Symp. on Rock Fragmentation by Blasting, 1983, Lulea, Sweden, 625-635.