Purpose. To study and assess the possibility of effective application of electrical prospecting b... more Purpose. To study and assess the possibility of effective application of electrical prospecting by magnetotelluric sounding (MT-sounding) and to determine the range of geological problems to be solved in the geoelectric conditions of the Shu-Sarysu geotraverse. Methodology. The issues of methodology of modern technologies of field observations, peculiarities of processing and interpretation of MT-sounding data are considered, which showed that modern instrumental and methodical electrical survey technologies of MT-sounding allow obtaining results of field measurements of increased reliability, due to their accuracy, productivity, mobility, noise immunity, level of automation. To identify the main features of the geoelectric structure of the Earth’s crust and the upper mantle, the modern technique of interpreting MT data allows for 1, 2D inversion of the effective curves of apparent resistivity and impedance phase. Findings. Based on MT-sounding data, a geoelectric section of the Shu...
International Journal of Mining, Reclamation and Environment, 2014
ABSTRACT Mining investment decisions for giant mining projects involve an enormous financial risk... more ABSTRACT Mining investment decisions for giant mining projects involve an enormous financial risk. Nevertheless, traditional risk evaluation methods are based on Monte Carlo simulation of cash flows and are of little value for risk management. In most mining project scenarios, the main sources of risk are those related to the evaluation of the ore body, specially the grade of the ore reserves. In this study, a new risk management methodology based on conditional simulation is developed to quantify the risk associated with uncertainty on the grade of the ore body. The methodology allows for quantifying risk for each period in the production plan and, therefore, it may be used as a powerful risk management tool to identify risk and ‘risk reduction’ objectives at the prefeasibility stages of a mining project. This model is validated by its application in a case study of a real copper ore body in Chile.
Полиметаллический тип оруденения медных руд Жезказганского, Саякского, Коундрадского, Нурказганск... more Полиметаллический тип оруденения медных руд Жезказганского, Саякского, Коундрадского, Нурказганского и ряда других месторождений, интенсификация добычных работ подземным, открытым способом, контроль содержания меди и сопутствующих элементов, применение геофизического опробования с использованием энергодисперсных рентгенофлуоресцентных, переносных, лабораторных и каротажных спектрометров типа РПП-12, РЛП-21, РКП-1, обеспечивающих анализ до 34 элементов (Сu, Pb, Zn, Ag, Cd, Fe, As, Ba, K, Ca, Ti, V, Cr, Mn, Co, Ni, Ga, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Pd, In, Sn, Sb, Ta, Bi, W, U, Th). Совокупность методических и аппаратурных разработок обеспечила статус рентгенорадиометрического опробования (РРО) как основного инструмента геологического мониторинга разведочных и добычных работ. По результатам РРО в рудах месторождений выявлены новые элементы (Mo на месторождении Кусмурын и Акбастау; Ta, Sr на месторождении Таскура и др.). Рассмотрена возможность мониторинга геологоразведочных работ, об...
Purpose. To study and assess the possibility of effective application of electrical prospecting b... more Purpose. To study and assess the possibility of effective application of electrical prospecting by magnetotelluric sounding (MT-sounding) and to determine the range of geological problems to be solved in the geoelectric conditions of the Shu-Sarysu geotraverse. Methodology. The issues of methodology of modern technologies of field observations, peculiarities of processing and interpretation of MT-sounding data are considered, which showed that modern instrumental and methodical electrical survey technologies of MT-sounding allow obtaining results of field measurements of increased reliability, due to their accuracy, productivity, mobility, noise immunity, level of automation. To identify the main features of the geoelectric structure of the Earth’s crust and the upper mantle, the modern technique of interpreting MT data allows for 1, 2D inversion of the effective curves of apparent resistivity and impedance phase. Findings. Based on MT-sounding data, a geoelectric section of the Shu...
International Journal of Mining, Reclamation and Environment, 2014
ABSTRACT Mining investment decisions for giant mining projects involve an enormous financial risk... more ABSTRACT Mining investment decisions for giant mining projects involve an enormous financial risk. Nevertheless, traditional risk evaluation methods are based on Monte Carlo simulation of cash flows and are of little value for risk management. In most mining project scenarios, the main sources of risk are those related to the evaluation of the ore body, specially the grade of the ore reserves. In this study, a new risk management methodology based on conditional simulation is developed to quantify the risk associated with uncertainty on the grade of the ore body. The methodology allows for quantifying risk for each period in the production plan and, therefore, it may be used as a powerful risk management tool to identify risk and ‘risk reduction’ objectives at the prefeasibility stages of a mining project. This model is validated by its application in a case study of a real copper ore body in Chile.
Полиметаллический тип оруденения медных руд Жезказганского, Саякского, Коундрадского, Нурказганск... more Полиметаллический тип оруденения медных руд Жезказганского, Саякского, Коундрадского, Нурказганского и ряда других месторождений, интенсификация добычных работ подземным, открытым способом, контроль содержания меди и сопутствующих элементов, применение геофизического опробования с использованием энергодисперсных рентгенофлуоресцентных, переносных, лабораторных и каротажных спектрометров типа РПП-12, РЛП-21, РКП-1, обеспечивающих анализ до 34 элементов (Сu, Pb, Zn, Ag, Cd, Fe, As, Ba, K, Ca, Ti, V, Cr, Mn, Co, Ni, Ga, Se, Br, Rb, Sr, Y, Zr, Nb, Mo, Pd, In, Sn, Sb, Ta, Bi, W, U, Th). Совокупность методических и аппаратурных разработок обеспечила статус рентгенорадиометрического опробования (РРО) как основного инструмента геологического мониторинга разведочных и добычных работ. По результатам РРО в рудах месторождений выявлены новые элементы (Mo на месторождении Кусмурын и Акбастау; Ta, Sr на месторождении Таскура и др.). Рассмотрена возможность мониторинга геологоразведочных работ, об...
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