EVALUATİON AND OPTİMİZATİON OF THE TECHNİCAL AND ECONOMİC PERFORMANCE OF MİNE TRANSPORTATİON SYSTEMS UNDER CONDİTİONS OF OPEN-PİT MİNE DEEPENİNG

Abstract

This article investigates the assessment and optimization of the technical and economic efficiency of mine transportation systems under conditions of open-pit mine deepening. As the depth of an open-pit mine increases, significant changes occur in haulage distance, transportation cycle time, fuel consumption, and operating costs. The study analyzes the relationships between pit depth and transportation costs and evaluates the key factors affecting the efficiency of mine haulage systems. The results of calculations and analyses indicate that increasing pit depth leads to a reduction in haul truck productivity, while transportation costs increase substantially. To reduce transportation expenses and improve the overall efficiency of the mine transportation system, several optimization measures are proposed, including the implementation of optimal haulage schemes, the use of high-capacity haul trucks, the improvement of in-pit road parameters, and the adoption of alternative transportation technologies. The obtained results have practical significance for the design, reconstruction, and operation of open-pit mines, providing a basis for selecting economically efficient transportation systems and enhancing the overall efficiency of mining operations.