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Journal of Mining Sciences

2016 year, number 3

A New Index of Rock-Breaking Tool Efficiency

B. L. GERIKE, V. I. KLISHIN, P. B. GERIKE
Institute of Coal, Siberian Branch, Russian Academy of Sciences, pr. Leningradskii 10, Kemerovo, 650065 Russia
Keywords: дисковый инструмент, массив полезного ископаемого, показатели прочности, разрушение, энергозатраты, коэффициент эффективности действия, disk tool, rock mass, strength indexes, failure, energy input, efficacy coefficient

Abstract

Based on the analysis of qualitative interaction between rocks and a rock-breaking tool, a new coefficient of the tool efficiency is proposed. This coefficient makes it possible to estimate the quality of the tool impact on broken rocks and to predict energy input of rock breaking and, consequently, productivity of mining machines in specific geotechnical conditions.