Authors: Maxim A. Tyulenev; Sergey A. Zhironkin; Ekaterina A. Garina
Addresses: Department of Open Pit Mining, Mining Institute, T.F. Gorbachev Kuzbass State Technical University, Vesennyaya Str., 28, Kemerovo 650000, Russia ' Department of Economy, National Research Tomsk Polytechnic University, Lenina Avenue, 30, 634050 Tomsk, Russia ' Department of Geology, Mining Institute, T.F. Gorbachev Kuzbass State Technical University, Vesennyaya Str., 28, Kemerovo 650000, Russia
Abstract: Nowadays the main part of coal in Kuzbass is extracted by backhoes. But the part of coal seams, especially on the open-pit mines where the work is coming to its final stage, is extracted by shovels. Considering characteristics of shovels design it is difficult to provide a coal seam extraction on the full height of the slope. At the same time the organisational and economic parameters of mining operations are significantly reduced when the layers of coal seam are worked out by shovels. Consequently, it is necessary first to establish the optimum parameters of the coal face for different types of shovels for complete scooping of the coal seam. Second, it is important to set the limit of seam dip angle at which the excavator operating parameters will be used maximally. For this purpose the graph-analytic model of calculating the coal losses when extracting seams by shovels is given in this paper.
Keywords: open pit mining; open cast mining; shovels; shovel excavators; coal losses; digging layer height; coal seams; graph-analytic models; Russia; mining industry; coal mines; seam dip angle.
International Journal of Mining and Mineral Engineering, 2016 Vol.7 No.4, pp.363 - 370
Received: 12 Jan 2016
Accepted: 12 Apr 2016
Published online: 21 Oct 2016 *