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IMPROVEMENT OF PROJECT DECISIONS EFFICIENCY AND COST OPTIMIZATION AT THE MINE ENGINEERING STAGE OF RECLAMATION IN THE CONTEXT OF OPEN PIT ORE MINING
Abstract
Mining technical reclamation as the main technological process for the development of ore deposits with the open method, as well as the cost optimization of reclamation, taking into account possible technical solutions have been considered in the paper. The investigation proves that the time gap between the soil disturbance and reclamation should be minimal, that is, reclamation must be carried out not at the final stage of mining, but in the process of mineral mining. The reclamation time is directly related to the efficiency of field development. Mining companies should take measures of early environmental renovation of disturbed lands at the initial stage of operation and their return to economic use. All these measures will reduce the negative impact on the environment of disturbed areas and reduce the payment for land disturbance and environmental pollution. For field deposits working out by the stages and separately open pit, overburden from the worked-out space should be placed in the mined-out space. Separate removal of the topsoil should be applied. Outside dumps should be placed in areas not suitable for use. The base of the dumps should be in the regular shape of an ellipse or rectangle, to reduce the area of occupied land. It is necessary to take the method of formation of the dump or heap, which ensures the reduction of the mining and planning operations during its subsequent reclamation. The results of this investigation can be used to improve the efficiency and reliability of design solutions for the open ore deposits development.
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References13
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