Перегляд Періодичні видання НТУ "Дніпровська політехніка" по назві
Зараз показуються 203-222 з 3446
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Intensification of technological processes in drilling and blasting operations during open-cut mining in Kyzylkum region
(National Mining University, 2018-03-30)Purpose. It is found that for long term standing, the pit bench profile is close to the boundary of the disturbed zone. Therefore, long stability of the bench can be estimated in respect to the size of the disturbed area ... -
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 ... -
Introduction of a jet pump dredger equipped with an innovative suction head
(Видавництво НТУ "ДП", 2022)The purpose of the article is performing full-scale experimental studies of the JPD 300-120 ejector suction dredger equipped with an innovative soil suction head with a jet disintegrator system. Methodology. Consists in ... -
Investigation and substantiation of efficiency of working out of a draft with dragline from one position with moving of a ground to an angle to 220 degrees at working out of smooth deposits
(2018)Визначено оптимальні параметри елементів системи розробки пологих родовищ вогнетривких глин із застосуванням драглайна ЕШ 10/70 (ЕШ 11/70) з одного робочого положення при підготовці пласта корисної копалини до виймання. ... -
Investigation of the dust formation process when hoisting the uranium ores with a bucket
(National Mining University, 2019-09-30)Purpose. Determining the possible level of air dustiness during the bucket hoisting of uranium ores along the shaft “Holovnyi” of the mine “Novokostiantynivska”, SE “VostGOK”. Methods. To determine the level of air ... -
Laboratory studies of a high-strength roof bolting by means of self-extending mixtures
(National Mining University, 2019-06-30)Purpose is to analyze parameters of a new method to fasten roof bolts with the help of nonadhesive mixtures extending while hardening along with the development of high expansion pressures. Methods. The research, concerning ... -
Lifelong learning competence development of mining students and academic integrity: case study of language courses
(National Mining University, 2019-03-30)Purpose. State-of-the-art description of faculty members (teaching language courses) attitude towards distinguishing of life-long learning competences evaluation and on purpose formation for mining students. Methods. The ... -
Limited operating conditions of the jet mill injector
(2013)Наведено три критичні режими роботи інжектору струминного млина та показано умови їх виникнення. Знайдено коефіцієнти інжекції щодо розглянутих критичних режимів. -
Limited operating conditions of the jet mill injector
(2013)Наведено три критичні режими роботи інжектору струминного млина та показано умови їх виникнення. Знайдено коефіцієнти інжекції щодо розглянутих критичних режимів. -
Local reinforcing of footing supported in the destroyed rock massif
(National Mining University, 2017-03-30)Purpose. Justification of feasibility of non-explosive destruction of hard rock during in-seam workings based on the obtained dependences related to changes of physical and mechanical properties of non-explosive destructive ... -
Management of land reclamation quality for agricultural use in opencast mining
(Dnipro University of Technology, 2021-03-31)Purpose. Theoretical substantiation of principles and development of recommendations for the choice of technological variant to form the quality of lands of technogenic origin, which would ensure rational spending of funds ... -
Managing mining enterprises’ assets as the basis of their competitiveness
(National Mining University, 2016-12-30)Purpose. Clarification of the essence of the coal enterprise asset management system as the main instrument to ensure its competitiveness through the effective use and involvement in the turnover of all assets available. Methods. ... -
Mass-dimensional charakteristics of wind-driven powerplants with horizontal axis of rotation of wind wheel
(2015)В роботі проведено аналіз базових конструкцій вітроенергетичних установок з горизонтальною віссю обертання вітроколеса. Проведено порівняння маси, об'єму та енергоефективності цих установок. З'я-совано що найбільшу масу ... -
Mathematical model to optimize drilling-and-blasting operations in the process of open-pit hard rock mining
(Dnipro University of Technology, 2021-06-30)Purpose is to determine a function of the reduced expenditures connected with drilling-and-blasting operations, loading and hauling operations, and rock fragmentation depending upon the cost of machine-shift of the applied ... -
Mathematical modeling of hydraulic mining from placer deposits of minerals
(National Mining University, 2016-06-30)Purpose. To analyze the process of hydraulic borehole mining of minerals. To define the main problems of hydraulic borehole mining. To create a mathematical model that will describe the process of hydraulic borehole mining ... -
Mathematical modeling of unsteady water filtration into anchored mine opening
(National Mining University, 2017-06-30)Purpose. To develop a mathematical model of the interrelated processes of coal-rock mass deformation and water filtration in the disturbed area to study the change in the value of water inflow into the mine working de-pending ... -
Mathematical modelling of thermal stresses within the borehole walls in terms of plasma action
(Dnipro University of Technology, 2021-06-30)Purpose is the development of a mathematical model to study and describe thermal processes within the borehole wall in terms of plasma-based rock breaking. Methods. The following has been applied: theoretical analysis ... -
Mathematical substantiation of mine locomotive braking efficiency under pulsiting braking torque
(2023)A comparative analysis of a mine locomotive braking by a disc brake, which creates a constant and pulsating sinusoidal braking torque with a different number of sinusoid periods per revolution of the wheel pair, is carried ...