Basic Development Trends of Drilling Equipment for Ore Mining with Induced Block Caving Method
V. A. EREMENKO1, V. N. KARPOV2, V. V. TIMONIN2, N. G. BARNOV3, I. O. SHAKHTORIN2
1Research Institute for Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Kryukovskii tupik 4, Moscow, 111020 Russia
2Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
3Institute of Mineralogy, Geochemistry and Crystal Chemistry of Rare Elements, ul. Veresaeva 15, Moscow, 121357 Russia
Keywords: система разработки, этажное обрушение, удельный расход ВВ, диаметр скважины, буровой станок, пневмоударник, высокое давление воздуха, компрессорные станции, буровые коронки, расширители скважин, скорость объемного бурения, mining system, block caving, powder factor, blasthole diameter, drilling rig, air hammer, high air pressure, compression plant, drill bits, reamers, volumetric drilling velocity
Abstract
The authors have determined the causes of drop in performance of induced block caving using fans of blastholes 105 mm in diameter and single blastholes 250 mm in diameter, as well as the sources of increased drilling cost and expansion of start-up time of production blocks in Abakan underground mine. Alternatives of improvement in drilling efficiency under current conditions are discussed.
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