Volume 13, Issue 4
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Останні додані
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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 ... -
Fault tree analysis and prevention strategies for gas explosion in underground coal mines of Pakistan
(National Mining University, 2019-12-30)Purpose. Gas explosion in the underground coal mines of Pakistan is the main source of coal miners’ mortalities. The purpose of this article is to analyze the main causes of gas explosion in the underground coal mines of ... -
Study of change in the leaching solution activity after treatment with a cavitator
(National Mining University, 2019-12-30)Purpose. Increasing the valuable component content in a pregnant solution due to the activation of leaching solution with cavitation treatment in case of the borehole in-situ leaching (ISL). Methods. To obtain the cavitation ... -
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 ... -
Three-dimensional electromagnetic field model of an auger electromechanical converter with an external solid rotor
(National Mining University, 2019-12-30)Purpose. Creating a three-dimensional mathematical model of the electromagnetic field of an auger electromechanical converter with the external solid rotor, taking into account the geometry peculiarities and the finite ... -
Ensuring the specified position of multisupport rotating units when dressing mineral resources
(National Mining University, 2019-12-30)Purpose. The solution of the problem for determining a specified vertical displacement of supports in a rotating unit, taking into account the yielding in the crosscut of the supporting node, as well as the peculiarities ... -
Beneficiation of phosphate sludge rejected from Djebel Onk plant (Algeria)
(National Mining University, 2019-12-30)Purpose Flotation tests have been used in order to achieve the purposes of this study which are: To obtain the highest recovery with a maximum grade of P2O5 from the tailing generated by the phosphate plant of Djebel Onk ... -
Implementation of probabilistic approach to rock mass strength estimation while excavating through fault zones
(National Mining University, 2019-12-30)Purpose. The paper addresses the rock mass state estimation while excavating a cross-heading through the area of regional fault “Bohdanivskyi” based on probabilistic approach to assessing the rock strength. Methods. The ... -
Survey of the world practice of implementing energy-efficient technologies in terms of mining enterprises
(National Mining University, 2019-12-30)Purpose is the analysis of world practice of applying the best available techniques to increase energy saving and energy efficiency of mining enterprises being the important factor of the economic development. Methods. ... -
Models and methods to make decisions while mining production scheduling
(National Mining University, 2019-12-30)Purpose is to develop a new approach to the design of mining operations basing upon models and methods of decision making. Methods. The paper has applied a complex approach involving approaches of decision-making theory. ... -
Determinants of environmental degradation: reflections on the impact of identified economic variables on the environment
(National Mining University, 2019-12-30)Purpose. The main objective of this study is to investigate the determinants of environmental degradation within the broader framework of the environmental Kuznets Curve analysis. To better understand the economic impact ... -
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 ... -
Numerical experiments concerning long-term deformation of rock samples
(National Mining University, 2019-12-30)Purpose is to develop modeling methods of long-term rock sample deformation and failure under various loading conditions with the help of finite-element method of failure rock modeling (DESTROCK-FE). Methods. DESTROCK-FE ... -
Forecast of potentially dangerous rock pressure manifestations in the mine roadways by using information technology and radiometric control methods
(National Mining University, 2019-12-30)Purpose. To reduce risk of emergency and injury-risk situations while improving the methods for predicting stress-strain state of the rock mass with the help of information systems, and to detect fissure locations in the ... -
In-ground vibration propagation characteristics during underground blasting
(National Mining University, 2019-12-30)Purpose. In this study, we investigated the vibration propagation characteristics in ground caused by the explosion pressures during ground and underground blasting. In addition, the use of Styrofoam as a simulation medium, ...
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