National Polytechnic University of Armenia, Yerevan, Republic of Armenia

S. S. Chibukhchyan, Head of Department, Candidate of Engineering Sciences, armenpack@mail.ru

More than 670 solid mineral mines are registered in Armenia, including 30 metal mines, and about 400 mines are in operation, including seven copper–molybdenum mines, four copper mines, fourteen gold mines and gold-polymetallic mines, two polymetallic mines, two iron ore mines and one aluminum mine. The territory of Armenia is divided into three zones with metal deposits: Alaverdi-Kapan, Pambak-Zangezur and Sevan-Amasia. The extraction of non-metallic minerals constitutes a significant part of the mining industry in Armenia. These are tuff, perlite, pumice, zeolite, slag, basalt, granite, nepheline syenite and marble, which are widely used in construction and are partially exported, in particular perlite, to European markets and neighboring countries. The performance and safety of mining machines used in open-pit mining in Armenia are greatly influenced by climatic factors and air pollution. The aggressiveness of the environment and the difficult operating conditions of mining machines are accompanied by the destruction of the working surfaces of parts, their mutual movement, friction, heating, chemical transformation, changes in physical quantities and design parameters (dimensions, relative position, etc.) during operation. The main types of failures and damage in engine elements are determined. A new approach to organizing a machine maintenance system is proposed, which can improve reliability and performance of mining machines.

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