FEATURES OF TECHNOLOGICAL MODERNIZATION AT MINING ENTERPRISES WITH UNDERGROUND METHOD OF ORE EXTRACTION

Abstract

The paper considers characteristic features and
main types of transient processes in the activities of
mining enterprises with underground method of ore
extraction. The authors justify basic directions of
technological modernization in the underground
mining of deep-lying reserves of ore deposits,
based on combination of different types of transient
processes characterized by changes in the mining
step, parameters of the mining system or the level
of mechanization of sinking and cleaning operations. The rational variants of modernization of
technologies of underground mining in the transition to the new floor and the methods of their technic and economic evaluation according to the criterion of reducing the profitability of the mining
enterprise in transition period are developed. The
paper establishes that during technological modernization, reducing the profitability of mining enterprise mainly depends on additional capital investments, in particular for mining operations,
while the level of this reducing is determined by the
economical effectiveness of the new technology and
the optimal strategy for evolution mining operations. The research results can contribute to the
feasibility study and design of mining systems of
mining enterprises with phased technological development.