ОБҐРУНТУВАННЯ МЕТОДИКИ ВСТАНОВЛЕННЯ ГРАНИЧНИХ КОНТУРІВ КАР'ЄРУ ІЗ УРАХУВАННЯМ ПАРАМЕТРІВ ТРАНСПОРТУ Purpose. Development and justification of the methodology for setting the boundary contours of the quarry and the payback period of capital investments for the development of the deposit in an open way, taking into account the parameters of transport, certainly the distance of transporting the rock mass and the production cost of 1 ton-kilometer. Methods. The developed methodology was tested on a model of a mold-shaped deposit, built using the AutoCAD software. The model parameters were adopted close to bedding conditions of Novo-Dmytrivsk brown coal deposit. The data on geological cross-sectional area, area of mineral contacts with overburden rocks, rock and mineral volumes by stages and in horizontal layers are recorded in an Excel electronic data table, which is the base for calculation economic and mathematical model for a deposit open-cast mining. The model takes into account the volume of mining rocks, their excavation cost, production cost and transportation distance. Results. Based on the constructed economic and mathematical model, the dependences of mining volumes, its cost and overburden coefficients for different mining stages and depending on the year of mining production operation were built. By analyzing the data obtained, a significant influence of the transport parameters on the mining cost has been established, which is not observed in the overburden coefficient dynamic figures by stages and years. Scientific novelty. The relevancy of designing and planning of open-cast mining works by comparison of "geological" overburden coefficients with "economical" ones was simplified, the possibility and feasibility of comparison the actual and acceptable costs for deposit development was confirmed. Practical value. The developed the calculating method for setting the boundary contours of the quarry and the payback period of capital investment allows to design and plan the open-cast mining of minerals with higher accuracy and, in the near future, allows to create on its base a software complex for automated mining design.
и обоснование рациональных схем вскрытия глубоких горизонтов карьера, ведущего разработку крутопадающих месторождений с применением комплексов цикличнопоточной технологии для условий эксплуатации Качарского железорудного карьера. Методика. Расчет эффективности схем вскрытия глубоких горизонтов карьера производится посредством разработанной методики определения погоризонтных объемов выемки горной массы, которая базируется на методе анализа графиков зависимости объема выемки горной массы от текущей глубины разработки месторождения полезного ископаемого открытым способом. Practical implication. According to the developed method for calculating the parameters of cyclicand-continuous technology complexes, the optimal location horizon of the loading point of the combined automobile and conveyor transport of the Kacharsky surface mine was established, taking into account the angle of inclination of the conveyor 18-23°. From the point of view of reducing the cost of transporting rock mass, it is recommended that a loading point be installed with through passage of trucks at a depth of 329 m.
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