Listar Volume 15, Issue 4 por fecha de publicación
Mostrando ítems 1-17 de 17
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Assessment of the factors influencing on the formation of energy-oriented modes of electric power consumption by water-drainage installations of the mines
(Dnipro University of Technology, 2021-12-30)Purpose. Performing the analysis to determine energy-efficient modes and assess the characteristics of the main indicators of electric power consumption by mine water-drainage installations based on the developed research ... -
Improving the accuracy of predicting the hazard of the earth’s surface failure formation during underground mining of mineral deposits
(Dnipro University of Technology, 2021-12-30)Purpose. Development of a new approach to improving the accuracy of predicting situations in which the earth’s surface failures occur as a result of undermining a rock mass during the development of mineral deposits. Methods. ... -
Application of radio-wave geointoscopy method to study the nature of spreading the solutions in the process of uranium underground leaching
(Dnipro University of Technology, 2021-12-30)Purpose. Assessment of the effectiveness of using the method of radio-wave geointoscopy of the inter-well space for threedimensional mapping of the zone of the leaching solution actual propagation in the process of uranium ... -
Interaction of rock-bolt supports while weak rock reinforcing by means of injection rock bolts
(Dnipro University of Technology, 2021-12-30)Purpose is to analyze changes in shape and dimensions of a rock mass area, fortified with the help of a polymer, depending upon the density of injection rock bolts as well as the value of initial permeability of enclosing ... -
Substantiation of resource-saving technology when mining the deposits for the production of crushed-stone products
(Dnipro University of Technology, 2021-12-30)Purpose. Scientific substantiation of the expedient depth of mining the non-metallic deposits of rocky minerals on the basis of mathematical and statistical methods, which will ensure resource-saving and rational use of ... -
Granulometric composition research of mine rocks as a material for backfilling the mined-out area in coal mines
(Dnipro University of Technology, 2021-12-30)Purpose. Determination of the granulometric characteristics and loosening coefficient of mine rocks formed during stope operations from undercutting the bottom rocks as a potential backfill material based on a set of mine ... -
Neural simulation-based analysis of the well wall stability while productive seam penetrating
(Dnipro University of Technology, 2021-12-30)Purpose is the development of mathematical models to evaluate deformation of parameters of the rock mass-well geological and engineering system within the anisotropic media. Methods. Both mathematical and neural modeling ... -
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 ... -
Optimizing the separation characteristics of the waterinjection hydrocyclone using mathematical modelling
(Dnipro University of Technology, 2021-12-30)Purpose. Although the hydrocyclone separator has many advantages, it still has some limitations which decrease its separation efficiency in many mineral processing applications because of fine particles which are miss ... -
Theoretical basis for the formation of damaging factors during the coal aerosol explosion
(Dnipro University of Technology, 2021-12-30)Purpose. Assessing the process of damaging factors formation during the coal aerosol explosion in mine workings on the basis of theoretical research of the explosion of coal dust deposits in order to substantiate promising ... -
Identifying the efficiency decrease factor of motors working under power harmornic in 660V electric mining grids
(Dnipro University of Technology, 2021-12-30)Purpose. Identify the motors efficiency decrease factor corresponding to various values of load-carrying ratio. Methods. Basing on the onsite measurements of power harmonic in 660V low voltage (LV) grids in Vietnam ... -
Choosing the flow part geometric shape of the dredge pumps for viscous fluids
(Dnipro University of Technology, 2021-12-30)Purpose. Search for the possibility of increasing the efficiency of dredge pumps for viscous fluids by determining the rational values of the blade-outlet inclination angles in the pump impellers. Methods. During the ... -
Experimental research on the haulage drifts stability in steeply dipping seams
(Dnipro University of Technology, 2021-12-30)Purpose. Substantiation of the conditions for haulage drifts stability using different protection methods in steeply dipping seams based on a set of experimental studies. Methods. To achieve the purpose set, mine ... -
Optimization study of blasting operations in Roşia Poieni open pit mine, Romania
(Dnipro University of Technology, 2021-12-30)Purpose. Drilling-blasting technology is one of the simplest and most often used techniques in open pit mining. This allows the excavation of a large volume of rock and useful mineral substance. The operation of blasting ... -
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 ... -
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 ... -
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 ...