Optimization of ring blasting in sublevel stoping gold mine

  • Miodrag Duranović University of Belgrade - Faculty of Mining and Geology
  • Nemanja Đokić University of Belgrade - Faculty of Mining and Geology
  • Veljko Lapčević University of Belgrade - Faculty of Mining and Geology
  • Slavko Torbica University of Belgrade - Faculty of Mining and Geology
  • Milenko Petrović University of Pristina – Faculty of Technical Sciences in Kosovska Mitrovica
  • Ljiljana Savić University of Pristina – Faculty of Technical Sciences in Kosovska Mitrovica
Keywords: drilling and blasting; ring blasting; sublevel stoping; fragmentation;

Abstract

Important parameters that describe successful sublevel stoping operation are optimal fragmentation and low damage of rock mass around stopes. In current state of operation fragmentation of blasted material is not optimal since high percentage of fragments are oversized which requires additional sizing. Also, excessive damage of surrounding rock mass is found. By proposing new blasting pattern with slightly increased amount of drilling, but with decreased hole diameter decrease of explosive usage is obtained for more than 100kg. Along with better charge distribution it is expected that rock mass damage is to be decreased as well.

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Published
2018-12-31
How to Cite
Duranović, M., Đokić, N., Lapčević, V., Torbica, S., Petrović, M., & Savić, L. (2018). Optimization of ring blasting in sublevel stoping gold mine. Podzemni Radovi, (33), 61-68. Retrieved from http://ume.rgf.bg.ac.rs/index.php/ume/article/view/126
Section
Articles

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