Optimization of open-pit mining of the Khoilinskoe barite deposit based on computer modeling

Abstract

Volumetric model of the ore body of Khoilinskoe barite deposit was built using Micromine software, which was used as a basis for computer modeling of options for open-pit mining of the deposit. Taking into account the design parameters of the existing open pit (the height of the overburden 5 m, the height of the repayment berm 15 m, the slope of the repayment berm 50°) its volume model was built, on the basis of which the volumes of extracted rock mass, ore were estimated and the average stripping ratio was calculated (19.7). A similar model was built for the prospective variant of the open pit, for which, taking into account new data on physical and mechanical properties of rocks, it became possible to increase the slope of the pit walls to 60° and the height of the repayment benches to 30 m. Calculated by the new model overburden ratio was 14.7, which will reduce the total volume of overburden by 1493 thousand m 3 .