关键词: 露天采场, 爆破参数, 炸药单耗, 大块率

Abstract: The various blasting parameters used in mines play a decisive role in regulating the blast⁃ ing process. How to set reasonable blasting parameters efficiently and accurately is a significant concern for mining enterprises in actual operations. This study focuses on the Eastern Baluba Mine，which faces issues such as high blasting material consumption and large block rate. The study was conducted on the +1 240 m production bench，targeting the general rock and difficult-to-blast rock on the south and north sides re⁃ spectively. The blasting hole network，charge structure，and initiation network were regulated. The blast⁃ ing effects of different schemes at the test site were compared and analyzed. Different blasting optimization experiments were carried out on the +1 240 m bench of the Eastern Baluba quarry，achieving good blasting rock-breaking effects. According to the proposed blasting parameters，the blasting explosives consumption on the south bench decreased from 0.521 kg/m³ to 0.352 kg/m³ ，a reduction of 32.44%. When using bagged ammonium oil explosives and mixed emulsion explosives on the north bench，the blasting material con⁃ sumption could be reduced by 23.04% and 24.00% respectively. The study has solved problems such as high blasting material consumption，large consumption of blasting equipment，and high large block rate in mines，and has certain guiding and reference significance for similar mining operations.

Key words: open-pit mining, blasting parameters, explosives consumption, large block rate