Перегляд Mining of Mineral Deposits по назві
Зараз показуються 225-244 з 354
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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 ... -
Recommended practice for using resource-saving technologies and tools for fine classification of uranium ores by size and refuse dehydration
(National Mining University, 2016-03-30)Purpose. Developing recommendations for the creation and application of resource-saving technologies and tools for fine classification and dehydration of uranium ore refuse for the purpose of its recycling, which is important ... -
Reconstruction of the primary organic productivity of Campano-Maastrichtian shales of Nkporo and Aptian-Albian Awi Formations, Calabar Flank using pigment yield index
(National Mining University, 2018-09-30)Purpose. To derive the paleo organic productivity exemplified by the pigment yield index in order to resolve the controversy on the petroleum potentials of Nkporo and Awi Formations in Calabar Flank, Southeastern ... -
Recycling of Prydniprovska thermal power plant fly ash
(National Mining University, 2017-03-30)Purpose. To confirm experimentally the feasibility of complete fly ash recycling at Prydniprovska Thermal Power Plant (TPP) by its refining into industrially valuable products using gravity classification of dry ash from ... -
Regularities in the distribution of granulometric composition of tuff while crushing
(Dnipro University of Technology, 2021-03-31)Purpose is to analyze distribution of granulometric composition of tuff as well as ultimate composition and identify dependence of its softening in the process of water saturation based upon a set of experiments to assess ... -
Regularities of hydromechanical amber extraction from sandy deposits
(National Mining University, 2019-03-30)Purpose is to analyze the efficiency of hydromechanical amber extraction from sandy deposits relying upon the determined regularities concerning the effect of parameters while carrying out a series of laboratory tests and ... -
Regularities of surface subsidence and rocks displacement within the boundaries of local workings
(National Mining University, 2016-09-30)Purpose. To establish typical phases of the earth surface subsidence and rocks displacement on the local workings’ boundary under the influence of the working face movement. Methods. Development of the general picture of ... -
Reliability and maintainability of scraper conveyor used in coal mining in the Jiu Valley
(Dnipro University of Technology, 2021-09-30)Purpose. The aim of the study is to determine and analyse causes of faults in the operation of TR-7A scraper conveyor and to estimate the required time for their remediation and select the methods of their prevention and ... -
Research into adhesive ore-dressing technologies of fine- and nano gold
(National Mining University, 2016-12-30)Purpose. To summarize domestic experience in creating technology for adhesive gold dressing and to describe key research results. Methods. Laboratory experimental and pilot research into the process of obtaining adhesively ...