SELECTION OF GEOTECHNOLOGY OF UNDERGROUND MINING SLOPE ORE BODY DEPOSITS OF QUARTZ, BASED ON ECONOMIC-MATHEMATICAL MODELING
The results of research conducted in order to develop high-valuation production of underground Geotechnology quartz ensuring economic efficiency and drastic reduction of losses in the depths of quartz. On the basis of an analytical review of the current scientific, technical, regulatory, methodical literature established and examined the factors affecting the performance indicators and extraction of ore in underground middle powerful inclined ore bodies. The complex estimation of the applicable development systems and their compliance with the requirements of the reduction of losses in the production of quartz and quartz quality of the raw materials. It was found that increasing the efficiency and safety of the development of high-value inclined ore bodies of quartz is achieved by applying the combined system development (CSD) with optimum construction parameters, a form of structural components and ore extraction index. Is performed systematization and design options for the CSD. On the basis of the developed methods for determining losses and dilution of ore in the CSD according to the thickness and angle of the orebody on the criterion of minimum losses mounted the most competitive options for economic and mathematical modeling. On the basis of economic and mathematical modeling made the choice of optimal variant of the CSD according to the criterion of maximum profit per 1 ton of balance reserves, taking into account established factors affecting the efficiency of mining deposits of high-value Kyshtym quartz.