Enhancing Efficiency of Direct Dumping by Cast Blasting of Overburden Rocks
V. I. Cheskidov, T. A. Tsymbalyuk, A. V. Reznik
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: вскрыша, бестранспортная технология, взрыв на сброс, технологические схемы, взрываемый блок, коэффициент сброса, внутренний отвал, overburden, durect dumping, cast blasting process, flow charts, explosion block, cast factor, internal dump
Abstract
The article reports the modelling results on direct dumping of overburden by cast blasting. The cast factor variation as function of seam occurrence and explosion block parameters is found. Potential improvement of cast blasting to displace overburden to mined-out pit area is described. The ways of enhancing efficiency of direct dumping in gently dipping coal extraction by combination of truck-and-shovel system with direct dumping in Kuzbass are identified.
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