Justification for mining overburden without the use of conveyor transport at the Pivnichnyi open pit of the Pokrovskyi mining and processing enterprise

Abstract

The current state of mining operations in the open pits of the Pokrovsky mining and processing enterprise has been analyzed, where the shortcomings of existing technological schemes have been identified. Technical and organizational criteria have been identified that must be met by technological schemes for overburden and mining operations for the open-pits of the Pokrovsky mining and processing enterprise, where conveyor transport is used. Five technological schemes have been proposed for the Pivnichnyi open-pit, which provide for the reallocation of the height of overburden benches and the movement of overburden only to internal dumps without the use of conveyors. The dependences of the height of the internal dump and its resulting angle of slope on the re-excavation factor for the proposed technological schemes were obtained. The indicators have been calculated at which the most operating efficiency of mining and transport equipment for the Pivnichnyi open-pit of the Pokrovsky mining and processing enterprise (MPE) will be achieved and complete extraction of overburden rocks with cross movement to the internal dump without the use of conveyor transport will be ensured, and the production capacity of the quarry is also given according to the demand for ore.