info:eu-repo/semantics/conferenceProceedings Mining institute Ltd., Belgrade application/pdf 753282 bytes eng 2022 8th Balkan Mining Congress, September 28-30, 2022, Belgrade cutting resistance, energy consumption, slice geometry, cut geometry, excavation velocity Trivan, Jelena Kostić, Srđan https://unilib.phaidrabg.rs/o:1124 Abstract: In present paper we examine the dependence of the energy consumption of the excavator and overburden cutting resistance on the cut and slice geometry and excavator arrow velocity. Data analyzed were collected from the bucket wheel excavator at „Tamnava Eastern Field“ that was operating until 2008. Using the multiple linear regression, we provided three separate explicit models for estimation of the energy consumption, linear and areal cutting resistance. Results obtained indicate statistically insignificant effect of starting and final cutting angle, while slice height and width and excavator velocity have negative effect of the energy consumption and cutting resistance. This could be explained by the lower resistance to excavation force along the cutting surface, which is reduced to the residual friction angle ones this force overcomes the shear strength. Results obtained confirm that higher excavation efficiency is obtained for larger slice elements. Assessment of excavator energy consumption and cutting resistance based on cut and slice geometry and excavation velocity All rights reserved