Перегляд Mining of Mineral Deposits по назві
Зараз показуються 347-354 з 354
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Underground mining method assessment using decision-making techniques in a fuzzy environment: case study, Trepça mine, Kosovo
(National Mining University, 2020-09-30)Purpose. The purpose of this paper is to reevaluate the currently used underground mining method with the intention to verify if cut-and-fill stoping method is appropriate for deep future excavation mining levels > 800 m ... -
Underground monitoring as the best way of roadways support design validation in a long time period
(National Mining University, 2020-09-30)Purpose. The aim of this paper is to show the importance of geotechnical monitoring in assessing stability of an underground excavation. Every mining excavation is designed on the basis of limited geotechnical data and ... -
Use of alternative energy sources to improve the efficiency of natural gas hydrate technology for gas offshore deposits transportation
(National Mining University, 2018-06-30)Purpose. Justification of the principal schemes acceptable for the existing level of technology, methods of extraction and transportation of offshore natural gas deposits. Increase in their efficiency by maximum reduction ... -
Use of the energy of parametric oscillations to improve drilling indices
(National Mining University, 2018-09-30)Purpose. Increase of the efficiency of using energy of parametric oscillations within the assembly of drilling string bottom by means of solving nonlinear-parametric equations of a “bit – drive motor – drilled-out rock” ... -
Use of the TOPSIS technique to choose the best supplier of quarry natural aggregate
(National Mining University, 2020-03-30)Purpose. All over the world, natural substance – the most consumed after water – is the aggregate. The aim of this paper is to select the best supplier of Quarry Natural Aggregate (QNA). Methods. Selection of the best ... -
Use of thermal and magnetic devices for prevention of asphaltene, resin, and wax deposits on oil equipment surfaces
(National Mining University, 2019-06-30)Purpose. To substantiate the advantages of using a multi-level externally insulated complex of magneto-thermal dewaxing which is located in the oil well and improves production of the formation fluid with high content of ... -
Variations of physico-mechanical, mineralogical and geochemical properties of marble under the influence of weathering
(National Mining University, 2019-03-30)Purpose. To investigate the physico-mechanical, mineralogical and geochemical properties variations of Igbeti marble, south-western Nigeria under the influence of weathering. Methods. About twenty representative samples ... -
Ways to improve safety of a pumping-circulatory system of a drilling rig
(National Mining University, 2018-09-30)Purpose. To modernize a pumping-circulatory system of a drilling rig in order to improve the environmental safety data, reliability, and convenience during oil well construction. Methods. Methods of system analysis of the ...