Experimental determination of best performing cut in Lece underground mine

  • Slavko Torbica University of Belgrade – Faculty of Mining and Geology
  • Miodrag Duranović Farmakom MB – Lece mine, Šabac, Serbia
  • Nenad Gramić Farmakom MB – Lece mine, Šabac, Serbia
  • Veljko Lapčević University of Belgrade – Faculty of Mining and Geology
  • Miloš Čolović Farmakom MB – Lece mine, Šabac, Serbia
Keywords: blasting; explosives; underground mining;

Abstract

Development operation in underground mining require high performance drilling and blasting. In order to determine best performing cut in Lece mine series of experiments were conducted. It was noticed that sequencing of initiation has crucial impact on cut performance. Line cut had experienced filling of empty holes with blasted material that was indistinguishable from the main rock. Finally, best results were obtained by delayed initiation of charges in circular pattern. Such cut construction provided complete hole recovery instead of previous poor results.

References

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DURANOVIĆ, M. et al. (2018) Optimization of ring blasting in sublevel stoping gold mine. Podzemni radovi, pp. 61-68.

TORBICA, S., and LAPČEVIĆ, V. (2015) Estimating extent and properties of blast-damaged zone around underground excavations. Rem: Revista Escola de Minas, 68, pp. 441-453.

TORBICA, S., and LAPČEVIĆ, V. (2016) Blast-induced damage and its impact on structural stability of underground excavations. Podzemni radovi, pp. 33-42.

TORBICA, S., and LAPČEVIĆ, V. (2018) Rock fracturing mechanisms by blasting. Podzemni radovi, pp. 15-31.

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Published
2019-12-31
How to Cite
Torbica, S., Duranović, M., Gramić, N., Lapčević, V., & Čolović, M. (2019). Experimental determination of best performing cut in Lece underground mine. Podzemni Radovi, (35), 49-55. https://doi.org/10.5937/podrad1935049T
Section
Articles

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