Перегляд Mining of Mineral Deposits по назві
Зараз показуються 217-236 з 354
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Petrographic characteristics in the central part of Kosovo
(Dnipro University of Technology, 2021-12-30)Purpose. This paper aims to provide complete identification of rock types in the Drenas region by detailed description of all types of the rocks found. The authors intended to determine interruption or continuity of all ... -
Phenomena of stability of the coal seam roof with a yielding support
(National Mining University, 2019-12-30)Purpose. Determining the conditions and parameters for ensuring the stability of the coal seam roof with a yielding support in the area adjacent to face and behind it under the influence of dynamic loads based on the ... -
Physical and chemical conditions for the formation of mercuric gold within Au-Hg deposits (thermodynamic modeling)
(National Mining University, 2017-12-30)Purpose. To carry out computer thermodynamic modeling of gold and mercury behaviour in the context of their common occurrence and formation of mercuric gold in hydrothermal solutions Cl– – HCO3– – Na+ and Cl– – Na+ – Ca2+ ... -
Physical and mathematical modelling of the conditions of coal and gas outbursts
(National Mining University, 2017-09-30)Purpose. Experimental study and theoretical modeling of conditions initiating destructive processes and development of gas generation in coals. Methods. Analysis, generalization and statistical processing of experimental ... -
Potential for increasing the efficiency of design processes for mining the solid mineral deposits based on digitalization and advanced analytics
(Dnipro University of Technology, 2021-06-30)Purpose. The research purpose is to develop and adapt the existing scientific-methodological, as well as software and information base for managing the geotechnological complexes to implement the process approach at the ... -
Potential utilization of quartz sand and kaolin from tin mine tailings for whiteware
(Dnipro University of Technology, 2021-09-30)Purpose. To do experimental research into the potential utilization of residual quartz-based sands and kaolin from the tin mine tailings in Bangka Belitung Province, Indonesia. Methods. Process of raw materials beneficiation ... -
Power consumption of rock decomposition process during diamond core drilling using pulse flushing
(National Mining University, 2018-09-30)Purpose. To study the impact of pulse flushing on the power consumption of rock decomposition during diamond core drilling. Methods. Theoretical analysis, processing of the obtained experimental data. Findings. The ... -
Predicting remaining lifetime of drill pipes basing upon the fatigue crack kinetics within a pre-critical period
(National Mining University, 2019-09-30)Purpose is to determine regularities of the development of corrosive fatigue cracks in terms of high-strength drill pipes. Methods. Basing upon the approaches of the material failure mechanics, the crack has been characterized ... -
Prediction of contamination level of the atmosphere at influence zone of iron-ore mine
(National Mining University, 2016-06-30)Purpose. The main purpose of the work is estimating and predicting ecological state of the atmosphere air on the territory of iron-ore mine. Methods. Laboratory research and biological estimation of the atmosphere state ... -
Prediction of the number of consumed disc cutters of tunnel boring machine using intelligent methods
(Dnipro University of Technology, 2021-12-30)Purpose. Disc cutters are the main cutting tools for the Tunnel Boring Machines (TBMs). Prediction of the number of consumed disc cutters of TBMs is one of the most significant factors in the tunneling projects. Choosing ... -
Prediction of tunnel boring machine penetration rate using ant colony optimization, bee colony optimization and the particle swarm optimization, case study: Sabzkooh water conveyance tunnel
(National Mining University, 2020-06-30)Purpose. The purpose of this study is to use a novel approach to estimate the tunnel boring machine (TBM) penetration rate in diverse ground conditions. Methods. The methods used in this study include ant colony optimization ... -
Preliminary assessment of roadheaders efficiency based on empirical methods and index of equivalent rock strength
(National Mining University, 2019-09-30)Purpose. The choice of a proper roadheader is a critically important step in planning of a project or some of its stages. Nowadays various manufacturers produce numerous models of these vehicles, hence it is unreasonable ... -
Probabilistic calculation in terms of deformations of the formations consisting of compacted overburden of Quarternary rocks
(National Mining University, 2020-12-30)Purpose is to study the effect of a stress-strain state (SSS) of rock mass on statistical dispersion of deformability characteristics of the compacted overburden; to develop modeling methods of dispersion of random values ... -
Problems of research and mining of gas deposits on the Moon
(National Mining University, 2017-12-30)Purpose. The study of the main types of the most valuable lunar resources, such as water, hydrogen, oxygen and other gases in the lunar regolith, and the identification of the main methods and technical solutions for their ... -
Production of hydrocarbons from weakly consolidated sandstone reservoirs in the Croatian part of the Pannonian basin system
(National Mining University, 2018-06-30)Purpose. More efficient production of hydrocarbons from weakly consolidated sandstone reservoirs using improved method. Modification of the equipment according to the geological characteristics of the reservoir and the ... -
Prognosis of surface deformation by the influence function method in terms of Paroseni mine (Romania)
(National Mining University, 2018-06-30)Purpose. The paper analyzes a problem of surface deformation as a result of low-inclined seam underground mining in Paroseni mine, Romania. Solving this problem makes it possible to predict the effects of the underground ... -
Prospective tendencies of coal mining risk management
(National Mining University, 2019-03-30)Purpose. The main purpose is to identify underground coal mining risks as well as approaches for their reasonable and efficient management taking into consideration internal production reserves in order to improve technological ... -
Protecting buried pipelines using different shapes of geofoam blocks
(Dnipro University of Technology, 2021-06-30)Purpose. This research presents experimental modeling and numerical analysis on reducing stress and protecting buried pipelines using three arrangements techniques of expanded polystyrene (EPS) geofoam blocks: embankment, ... -
Quality evaluation and loss estimation at gravel quarries around the Qena Governorate, Egypt: A case study
(Dnipro University of Technology, 2021-06-30)Purpose. In recent years in Egypt there has been a significant increase in the demand for building materials, particularly gravel which is employed in buildings, the base layer for road construction, and other industries. ... -
Quantifying the release of acidity and metals arising from drainage of acid sulfate soils in the Kelantan Plains, Malaysia
(National Mining University, 2020-09-30)Purpose. This paper discusses the release of acidity and toxic metals from acid sulfate soils in the Kelantan plains due to the oxidation of pyrite. Methods. A study was conducted in the field and laboratory using leaching ...