Перегляд Mining of Mineral Deposits по назві
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A resource efficient and environmentally safe charge structure for mining in an open-pit
(Dnipro University of Technology, 2021-12-30)Purpose. The purpose is to reduce mineral losses during the explosive destruction of rocks and environmental pollution by harmful gases and fine particulate matter. Methods. To achieve the objectives of the study, methods ... -
A study on the physical and mechanical properties of a granite outcrop for a quarry at Onikoko community, Oyo State, South-Western Nigeria
(Dnipro University of Technology, 2021-03-31)Purpose. To investigate the physical and mechanical properties of a granite outcrop for a quarry at Onikoko community in Oyo State, South-Western Nigeria. Methods. Samples of granite rock were collected from the outcrop ... -
Adaptive control of drilling by identifying parameters of object model under nonstationarity conditions
(National Mining University, 2020-03-30)Purpose. The research is intended to investigate and synthesize adaptive control over drilling by identifying parameters of an object model under non-stationarity conditions. Methods. Under conditions of rapidly changing ... -
An adaptive neuro fuzzy inference system to model the uniaxial compressive strength of cemented hydraulic backfill
(National Mining University, 2018-06-30)Purpose. The purpose of this paper is to develop the models for predicting the uniaxial compressive strength (UCS) of cemented hydraulic backfill (CHB), a widely used technique for filling underground voids created by ... -
Analysis of blasted rocks fragmentation using digital image processing (Case study: Limestone quarry of Obajana Cement Company)
(Dnipro University of Technology, 2021-12-30)Purpose. Blasting is an important aspect of mining activities in which fragmentation is the key component that determines its efficiency. Fragmentation is the first result of blasting, and is directly related to the costs ... -
Analysis of current and voltage harmonics introduced by the drive systems of a bucket wheel excavator
(National Mining University, 2020-12-30)Purpose. The quality of electricity is a problem of major interest, making it necessary to analyze the factors and causes that result in the worsening of the electric energy quality. An important aspect of electricity ... -
Analysis of gas hydrate deposits development by applying elements of hydraulic borehole mining technology
(National Mining University, 2017-06-30)Purpose. To substantiate and develop the principal schematics suitable for the existing technological level and method of gas hydrates production from the offshore fields. Methods. Analysis of properties inherent to gas ... -
Analysis of magnetic treatment of production fluid with high content of asphalt-resin-paraffin deposits
(National Mining University, 2017-06-30)Purpose. Justification of magnetic field application in order to prevent formation of asphalt-resin-paraffin deposits (ARPD) in oil and gas equipment, and consider some current views on the state of ARPD problem in oilfield ... -
Analysis of miners’ biomechanical characteristics during underground coal mining
(National Mining University, 2016-12-30)Purpose. Analysis and establishing regularities of changes in miner’s biomechanical characteristics during underground coal mining in order to reduce the number of accidents and injuries in coal mines. Methods. The complex ... -
Analysis of operation parameters of partial backfilling in the context of selective coal mining
(National Mining University, 2019-12-30)Purpose is to determine factors of effect of mechanical parameters and geometry of packs, constructed using the undercut rocks in the process of selective coal mining, on the state of geomechanical system within a mine ... -
Analysis of possibilities to increase oil recovery with the use of nitrogen in the context of deep oil deposits of the Dnipro-Donetsk oil-and-gas Ukrainian province
(National Mining University, 2019-12-30)Purpose is to increase oil recovery of deep oil deposits of the Dnipro-Donetsk oil-and-gas Ukrainian province with the use of nitrogen. Methods. Experiments, intended to residual oil displacement with the use of different ... -
Analysis of the efficiency of geomechanical model of mine working based on computational and field studies
(National Mining University, 2018-12-30)Purpose is to substantiate the efficiency of geomechanical model of the mine working on the basis of qualitative and quantitative parameters of stress and strain state of the mine working and to compare the results of ... -
Analysis of the factors influencing the level of professional health and the biological age of miners during underground mining of coal seams
(National Mining University, 2018-09-30)Purpose. Setting of the work environment of workers at mining enterprises during thin coal seams extraction influence on the character and the rate of their aging by determination of the biological age and estimation of ... -
Analysis of the stress deformed state of rocks around the haulage roadway of the Beskempir field (Kazakhstan)
(National Mining University, 2020-09-30)Purpose. To perform research and detailed analysis of the stress deformed state of rocks around the haulage roadway based on the numerical modeling with the purpose to select the rational type and design of the haulage ... -
Analytical modeling of mine water rebound: Three case studies in closed hard-coal mines in Germany
(Dnipro University of Technology, 2021-09-30)Purpose. In this paper we present and validate an analytical model of water inflow and rising level in a flooded mine and examine the model robustness and sensitivity to variations of input data considering the examples ... -
Analytical platform to provide competitiveness of ore-mining machinery manufacturing
(National Mining University, 2020-09-30)Purpose is to develop analytical platform providing competitiveness of ore-mining machinery manufacturing. Methods. The analytical platform combines five modular blocks. It involves determination of an area of optimum ... -
Analyzing a denitration process in the context of underground well uranium leaching
(Dnipro University of Technology, 2021-03-31)Purpose is to increase a sorbent denitration degree in the context of underground uranium leaching while optimizing reagent concentration as well as a degree of the solution activation on the basis of laboratory ... -
Analyzing changes in a leach solution oxygenation in the process of uranium ore borehole mining
(Dnipro University of Technology, 2021-09-30)Purpose is to increase uranium content in a PR solution while developing a technique varying oxidation-reduction potential of a leach solution with its oxygenation and identify changes in the oxygenation depending upon ... -
Analyzing kinetics of deformation of boundary rocks of mine workings
(National Mining University, 2018-12-30)Purpose is to analyze nature of rock deformation and to estimate experimentally state of mine workings being supported under the conditions of areas disturbed by coal mining. Methods. The studies involved field instrumental ... -
Analyzing mechanics of rock breaking under conditions of hydromechanical drilling
(Dnipro University of Technology, 2021-09-30)Purpose is to substantiate design factors and technological parameters of next-generation facilities of hydromechanical drilling basing upon the determined features of interaction between breaking pellets and rock ...