Перегляд Mining of Mineral Deposits по назві
Зараз показуються 37-56 з 354
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Certain aspects concerning the development of a functioning scheme of the auto-mated system to control energy flows of underground iron-ore enterprises
(National Mining University, 2020-09-30)Purpose is to develop a functioning scheme of ACS for energy flows in terms of invariability of electric power consumption as well as inversion of energy flows of mining enterprises in the current time of day to decrease ... -
Choice and substantiation of stable crown shapes in deep-level iron ore mining
(National Mining University, 2018-12-30)Purpose. The aim of the paper is to select and substantiate stable shapes of crown pillars through determining regularities of rock pressure impacts on their stability depending on the crown shapes, mining depths and iron ... -
Choice of development method for technogenic mineral deposits by technological criteria
(National Mining University, 2016-12-30)Purpose. The purpose of the paper is to search for and choose optimal technologies of developing technogenic deposits. Methods. To achieve the aim, the analysis of selecting the deposit development technologies is used ... -
Choosing a camera for mine surveying of mining enterprise facilities using unmanned aerial vehicles
(National Mining University, 2020-12-30)Purpose. Choosing an effective method for performing the mine surveying of the objects at mining enterprise based on the implementation of practical and analytical work. Particular attention is focused on the use of modern ... -
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 ... -
Coal industry in the context of Ukraine economic security
(National Mining University, 2017-03-30)Purpose. To rate the main factors and indicators of the national economic security, in particular the degree of the country’s provision with primary natural resources which determine the global energy consumption ... -
Coalbed methane: places of origin, perspectives of extraction, alternative methods of transportation with the use of gas hydrate and nanotechnologies
(National Mining University, 2017-09-30)Purpose. To investigate the main basic physical and chemical properties of coalbed methane (CBM), conditions of its formation and places of occurrence. Special attention is paid to CBM utilization using alternative methods ... -
Computational model for evaluating the state of geomechanical systems during computing experiments
(National Mining University, 2017-03-30)Purpose. To create a model allowing integration of the diverse features identified for the rock massif behavior by differentiation of various theories and real phenomena into a single information-analytical flow. Methods. ... -
Concept of the journal “Mining of Mineral Deposits” Of the National Mining University”
(National Mining University, 2016-03-30)This article describes the present concept of the journal “Mining of Mineral Deposits”. The introduction features information about the Underground Mining Department where the journal was created. It also focuses on a short ... -
Controlling stress state of a hoisting shaft frame in the context of specific freezing process
(National Mining University, 2018-12-30)Purpose is to obtain regularities of a stress state of such multilayer system as neighbourhood rock mass – frozen soil – hoisting shaft frame in the process of numerical analysis to control a frame state with the selection ... -
Cradle-to-gate life cycle assessment of the production of separated mix of rare earth oxides based on Australian production route
(National Mining University, 2020-06-30)Purpose. Life cycle assessment (LCA) to investigate environmental impact resulting from the production of separated mixture of rare earth oxides (REO) mined in Australia. Methods. Analytical study of the literature reviews ... -
Cutting-edge industrial technology of mining tool manufacturing
(National Mining University, 2016-12-30)Purpose. To conduct a comparative economic analysis of cermet alloys regeneration technology, to identify the most “environmentally friendly” and cost-effective processing of solid alloys waste. Methods. As a research ... -
Damage to flexible pipes of coiled tubing equipment due to corrosion and fatigue: methods and approaches for evaluation
(National Mining University, 2017-12-30)Purpose. To propose an engineering approach for evaluating surface corrosion fatigue of flexible pipes of coiled tubing equipment, on the basis of the generalized data about corrosion fatigue behaviour of structural steels ... -
Dependence between the height of rocks displacement zone with fissure and the size of stopes
(National Mining University, 2016-12-30)Purpose. To establish dependences describing changes in the height of rocks displacement zone with fissure in the course of stope development using experimental data about the stopes’ dimensions and parameters of the land ... -
Design of bottom hole assemblies with two rock cutting tools for drilling wells of large diameter
(National Mining University, 2020-09-30)Purpose. A methodology development for calculating the bottom hole assemblies (BHA) with two rock cutting tools for drilling the wells of large-diameter with an ability to manage the trajectory. Methods. A mathematical ... -
Designing cutting tools of mining machines for coal auger mining
(National Mining University, 2016-09-30)Purpose. The need for new technologies and techniques for the efficient development of thin coal seams. Methods. Mathematical and experimental modeling of the contact interaction of multipoint cutter with the rock. ... -
Destruction of rocks by the non-explosive depleting compounds during mining
(National Mining University, 2016-03-30)Purpose. Justification of the possibility of non-explosive coherent rocks destruction while carrying out stratal underground mine workings on the basis of the set of dependencies describing changes in physical and mechanical ... -
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 ... -
Determination of basic calculation and experimental parameters of device for bore hole cleaning
(National Mining University, 2016-09-30)Purpose. To substantiate the design and operating technological parameters of the device for the interval bore hole cleaning departing from the set dependences of active jets formation in the flow through the blade ... -
Determination of the injury probability among coal mine workers
(Dnipro University of Technology, 2021-06-30)Purpose. Establishing regularities of change in the injury probability and development of a methodology for determining the injury probability of coal mine workers to improve the occupational health and safety (OSH) ...