Sfoglia Періодичні видання НТУ "Дніпровська політехніка" per Titolo
Items 340-359 di 3467
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Research into rock mass geomechanical situation in the zone of stope operations influence at the 10th Anniversary of Kazakhstan’s Independence mine
(Dnipro University of Technology, 2021-03-31)Purpose. Predicting the stress-strain state (SSS) of the rock mass in the zone of stope operations influence using the selfcaving mining system and the calculation of the load-bearing capacity of mine workings support at ... -
Research into stress-strain state of reinforced marginal massif of extraction mine working by combined anchoring system
(National Mining University, 2016-03-30)Purpose. Justification of conditions for reusal of extraction mine working by maintaining system parameters of resin-grouted and rope roof bolts. Methods. Wide range of investigation of stress-strain state of coal-bearing ... -
Research into stress-strain state of the rock mass condition in the process of the operation of double-unit longwalls
(National Mining University, 2020-06-30)Purpose. To substantiate changes in stress-strain state of rock mass in the process of long-pillar mining with the help of double-unit longwalls while evaluating stress of a mine field in terms of Lvivvuhillia SE mine. Methods. ... -
Research into technology of fastening the mine workings in the conditions of unstable masses
(Dnipro University of Technology, 2021-09-30)Purpose. Determination of the rock stability along the strike of the mass, where the drift mining of the horizon -480 m is conducted, considering the possibility of using the improved types of supports in the conditions ... -
Research into the effect of gallery size on blast pull in underground coal mines
(National Mining University, 2018-06-30)Purpose. To investigate the effect of gallery size on blast pull in underground colliery by drilling and blasting techniques. Methods. The study conducted in three different underground collieries namely A, B and C located ... -
Research into the influence of technical factors on rocks deformation during reworking of ore deposits
(National Mining University, 2017-09-30)Purpose. The aim of this work is to establish the relation of rocks deformation during reworking of ore deposits to mining and technical conditions and factors of mineral production based on the processing of surveying ... -
Research into the process of storage and recycling technogenic phosphogypsum placers
(National Mining University, 2020-06-30)Purpose. Study of technogenic placers storage conditions using the example of phosphogypsum dumps at PJSC “Rivneazot” by determining the rocks sorption properties, distribution and concentration of elements, as well as ... -
Research of grating efficiency dependence on the sifting surface form
(2013)З метою обгрунтування вибору та використання дугових поверхонь просіювання була виконана серія дослідів, які дозволили встановити, що ефективність розділення дрібнофрак-ційних матеріалів на дугових поверхнях вище, ніж на ... -
Research of rock pressure manifestations in rocks of parting during descending and simultaneous mining of C9 and C10Top coal seams
(National Mining University, 2017-03-30)Purpose. To estimate the probability of interstratal rocks stability loss during simultaneous mining of two seams in series in the descending order. Methods. Methods of a computing experiment and mine observations were ... -
Research of the power effectiveness of the traction electrotechnical complex motion trajectory realization in a trolleybus with peak motor efficiency
(НГУ, 2013)The requirements imposed on traction electrotechnical complex are increasing day by day. This is ex-pressed in raising evaluation of quality, ease of implementation, efficiency, reliability and performance ... -
Research on the coupling effect of the composite slope geometrical parameters
(Dnipro University of Technology, 2021-06-30)Purpose. To analyze the coupling effect between composite slope geometrical parameters. Methods. The slope angle and excavation depth are coupled with load which is waste dump in this case. Several models were created ... -
Research practice of coal particles elektrosurface properties in aqueous suspension
(2013)Описано методику дослідження електроповерхневих властивостей вугільних частинок у водних суспензіях з використанням суспензійного та осмотичного ефектів. Показано раціональні області використання цих методів. -
Research іnto the mechanіsm of aggregate-formіng objects contact wіth oіl aggregatіon of fіnely-dіspersed coal
(National Mining University, 2017-12-30)Purpose. To investigate separate phases inherent to the process of “reagent – coal grain” contact during oil aggregation of coal, in particular, to analyze the following phases of the contact process: “encounter of ... -
Research, science, technology, and innovation parks: reviewing both mining and research tendencies
(National Mining University, 2018-06-30)Purpose. Between 2007 and 2008, a study was undertaken for the Debswana Diamond Company Botswana (Pty) Ltd., a leading diamond mining company in Botswana. The purpose of the study was to establish if Debswana could benefit ... -
Reservoir characteristics of the Miocene age formations at the Allas Dome, Hamrin Anticline, Northern Iraq
(National Mining University, 2020-12-30)Purpose. This study evaluated the reservoir characteristics and determined the formation lithology of Dhiban, Euphrates, and Serikagni in the Hamrin wells (Hr-2 and Hr-9). Methods. The well logs have used the gamma ray ... -
Resonance in rock mass as the key reason of geodynamic phenomena
(National Mining University, 2019-06-30)Purpose is to develop deformation criterion or predecessors of geodynamic phenomena within rock mass relying upon the systemized experimental data concerning rock behaviour in a volumetric field of compressive stress. Methods. ... -
Restoration of the tribotechnical pairs in equipment of mining industry
(National Mining University, 2019-09-30)Purpose. Substantiation of the possibilities and development of technology for the restoration of the worn-out tribotechnical pairs of mining equipment by methods of hot radial stamping in powder metallurgy using technogenic ... -
Results of research into amber mining by hydromechanical method
(National Mining University, 2017-03-30)Purpose. To specify parameters of the relationship between sandy rock and vibrohydraulic intensifier as well as to justify the use of hydromechanical method to intensify amber extraction. Methods. The basic laws of surface ... -
Review of geomechanical problems of accumulation and reduction of mining industry wastes, and ways of their solution
(National Mining University, 2018-12-30)Purpose. The identification of geomechanical problems of mining industry wastes accumulation and substantiation of the ways for their solution with the possibility of processing the watery technogenic feedstock by fine ... -
Review of machine learning and deep learning application in mine microseismic event classification
(Dnipro University of Technology, 2021-03-31)Purpose. To put forward the concept of machine learning and deep learning approach in Mining Engineering in order to get high accuracy in separating mine microseismic (MS) event from non-useful events such as noise events ...