The article addresses the increasing complexity of mined or prospective coal deposits. The paper analyses the role of digital simulation in operation assessment and reassessment of the potential of complex in structure coal deposits for more accurate understanding their investment attractiveness, reliability of knowledge on quantity and quality of the reserves. The article stresses the objective need to take into account the realities of the VUKA-world, when companies have to react rapidly to changing of external conditions by adapting organizational and technological measures as much as possible to the constantly overestimated potential of the raw material base. It is of note that reserves should be assessed in accordance with international requirements in the light of the increasing number of parameters for management. The complexity of the structure, the geomechanical heterogeneity of the rock mass, the mineral content of the impurities in the coal, its caking capacity, oxidation and enrichment are taken into account in the estimation. The paper presents the measures to increase the level of utilization of geological potential through the application of selective mining and the control of different quality coal streams in preparation for enrichment and during primary processing.
The article considers various options for providing gold mining enterprises in the Arctic zone of the Republic of Sakha (Yakutia) with fuel and energy resources to generate electricity for industrial needs. The authors assess the possibility of organizing the power supply for the operation of the mines using the resources of local coal deposits. The Soginsky brown coal and Krasnorechensk coal deposits are most suitable for mining. The research proves that the use of coal in generation can reduce the cost of power supply in the development of ore and placer deposits. They determined that the lowest unit cost of electricity generation is achieved when brown coal from the Kularski deposit is used as fuel (9.3 rub/kW·h). The use of coals from the Soginsky deposit is 20% more expensive than the Kularsky coals, but the quality characteristics of the coal and the readiness of the deposit for mining are significantly better. The most accessible, but more expensive option for organizing the supply of coal to gold deposits is the use of imported coal of the required quality. The authors outline the necessity of additional appraisal of coal resource potential of the Arctic zone of Yakutia on the base of contemporary economic criteria. There is a need to clarify the extent of coal production and to determine the importance of coal in investment projects in the northeast of Arctic zone of Yakutia.
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