Перегляд Mining of Mineral Deposits по назві
Зараз показуються 41-60 з 354
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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) ... -
Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya)
(National Mining University, 2018-09-30)Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) ... -
Determining and determinable factors influencing the size of zone of land-use restriction
(National Mining University, 2020-03-30)Purpose. Identification and systematization of determining and determinable factors that affect the size of land use restriction zones to ensure both the legal component of land rights and the well-being of society as a ... -
Determining local wetness conditions within the mined lands using GIS
(National Mining University, 2020-12-30)Purpose. To provide methodologically determining local wetness conditions within Kryvbas mined lands taking into consideration the surface structure and using geoinformation technologies. Surface structure is the determinative ... -
Determining patterns of the geomechanical factors influence on the fastening system loading in the preparatory mine workings
(National Mining University, 2020-03-30)Purpose. Substantiation of calculating the rational parameters of reaction and yielding property of the fastening system in the preparatory mine workings. Methods. The stress-strain state analysis of the “massif – support” ...