Authors: L.I. Andreeva

Title of the article: Methodical approach to determining the service life and ownership price of quarry excavators in the conditions of mining pits

Year: 2023, Issue: 5, Pages: 61-67

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 622.002.05

DOI: 10.26730/1816-4528-2023-5-61-67

Abstract: The methods of determining the optimal service life of mining equipment from the point of view of the appropriateness of its maintenance and repair service are considered. The application of such a repair service strategy at mining enterprises is justified, which ensures a minimum of costs with the required repair quality and operational reliability of mining equipment. Two main strategies are considered - repair of equipment according to need, that is, after the machine or its individual nodes have reached the limit state, as well as scheduled preventive maintenance, which provides for planning and organizing repair services in a timely manner, taking into account the operating time of the volumes of rock mass (or machine hours of operation) and the technical condition of each piece of equipment. Based on a methodological approach based on a comprehensive assessment of the results of the operation of mining machines in the coordinates "result-costs", the possibility of alternately decommissioning inefficient equipment and selecting technical services for each group of machines is considered. The "result" refers to the amount of work performed by the mining machine over a certain period of time (t., m3), "costs" - the financial means invested in the maintenance of each mining machine. The variants of calculating the cost of ownership of each unit of equipment in the conditions of import substitution are investigated. An example of calculating the cost of ownership of an EKG-12A excavator operated in the north-western region of the Russian Federation is given.

Key words: operational efficiency mining equipment frequency of replacement expediency cost of ownership

Receiving date: 11.09.2023

Approval date: 30.11.2023

Publication date: 19.12.2023

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