Перегляд Mining of Mineral Deposits по назві
Зараз показуються 117-136 з 354
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Generalization of trends in the influence of geomechanics factors on the choice of operation modes for the fastening system in the preparatory mine workings
(National Mining University, 2019-09-30)Purpose. Substantiation of the mechanism of loading the preparatory mine working support to optimize its deformation-strength characteristics based on the calculation of the stress-strain state of the “massif – support” ... -
Geochemical characterization of the Sutlegen bauxite deposit, SW Antalya
(Dnipro University of Technology, 2021-09-30)Purpose. The purpose is to determine geological and geochemical characteristics of the Sutlegen (Antalya, Turkey) bauxites, to identify the elements that played a major role in their formation. Methods. X-ray diffraction ... -
Geodetic and seismological observations applied for investigation of subsidence formation in the CSM Mine (Czech Republic)
(National Mining University, 2018-06-30)Purpose. Undermined areas are affected by the creation of subsidence depressions due to long-term underground mining. In general, different geodetic methods are applied to obtain further information needed to determine the ... -
Geological features and marble production qualities of Western Turkey
(National Mining University, 2019-03-30)Purpose. Isparta Angle occurs along the Mesozoic carbonate axis. Carbonated rocks forming the Taurus belt are continuous with allochthonous and autochthonous features. The rocks in the region are abnormally contacted with ... -
Geomechanics substantiation of pillars development parameters in case of combined mining the contiguous steep ore bodies
(Dnipro University of Technology, 2021-03-31)Purpose. Determining the actual dimensions of the protecting and crown pillars of ore bodies by seismic survey and assessing the possibility of rock mass collapse and fracturing at the lower levels of the Zhairemskoye ... -
Geostatistical analysis of the nickel source in Gllavica mine, Kosovo
(National Mining University, 2020-06-30)Purpose. Geological research character and real quality assessment of Nickel source based on the geostatistical survey analysis and comparing the block quality grade results by assessing present mining condition of nickel ... -
Granulometric composition research of mine rocks as a material for backfilling the mined-out area in coal mines
(Dnipro University of Technology, 2021-12-30)Purpose. Determination of the granulometric characteristics and loosening coefficient of mine rocks formed during stope operations from undercutting the bottom rocks as a potential backfill material based on a set of mine ... -
Gravitational and tectonic stresses in the rock mass and their determination by measurements in separate points
(National Mining University, 2017-09-30)Purpose. Stress state in rock mass is the most important factor affecting processes around mine working. The methods used for calculation of stresses based on hypotheses of elastic thrust, hydrostatic state or spherical ... -
Harmonization of modeling systems for assessing the electric-power consumption levels at mining enterprises
(National Mining University, 2018-12-30)Purpose. The purpose of the work is to study the system corporate features of electric-power consumption systems, the formation of applied scientific and methodological support, as well as economic and mathematical modeling ... -
Hazards identification and risk analysis in surface mines of Pakistan using fault tree analysis technique
(Dnipro University of Technology, 2021-03-31)Purpose. Technology has advanced significantly but still mining industry faces a higher number of accidents. The purpose of the research is to identify the common hazards and associated risk which are the root causes of ... -
Hydro and geomechanical stability assessment of the bund wall bottom slope of the Dniprovsk tailing dump
(National Mining University, 2018-03-30)Purpose. The objective is to assess the stability of bund wall components of a hydro-technical structure under the conditions of a tailing dump which hydrodynamic mode has been disrupted during operation. The specified ... -
Hydro-thermodynamic model of deep-water hydraulic lift of 3-phase fluid considering heat-mass-exchange processes
(National Mining University, 2017-06-30)Purpose. To justify theoretical dependences of the main flow parameters of 3-phase streams for modeling the process of hydraulic hoisting of polymetallic nodules in the flow section of the deep-water air-lift for various ... -
Identifying sources of coal spontaneous heating in mine workings using aerogas control automatic systems
(National Mining University, 2020-03-30)Purpose. Substantiation of the possibility for expanding the modern Aerogas Control (AGC) systems functions when using them to identify the processes of spontaneous heating, spontaneous ignition of coal and gas contamination ... -
Identifying the efficiency decrease factor of motors working under power harmornic in 660V electric mining grids
(Dnipro University of Technology, 2021-12-30)Purpose. Identify the motors efficiency decrease factor corresponding to various values of load-carrying ratio. Methods. Basing on the onsite measurements of power harmonic in 660V low voltage (LV) grids in Vietnam ... -
Impact of Artana mine on heavy metal pollution of the Marec river in Kosovo
(Dnipro University of Technology, 2021-06-30)Purpose. This paper aims to reflect the extent of the impact of the Artana mine on heavy metal pollution of the waters of the Marec river. Mineralogical pollution of this river resulted in almost total degradation of ... -
Impact of new technologies in hard rock underground mining taking into account operational efficiencies and production rates
(National Mining University, 2016-12-30)Purpose: The purpose of this paper is to discuss the impact that new technology will have and a few of the key areas to be addressed that will ensure a successful and sustained adoption of new technologies within mining ... -
Implementation of probabilistic approach to rock mass strength estimation while excavating through fault zones
(National Mining University, 2019-12-30)Purpose. The paper addresses the rock mass state estimation while excavating a cross-heading through the area of regional fault “Bohdanivskyi” based on probabilistic approach to assessing the rock strength. Methods. The ... -
Implementing FLAC3D model for simulating deformation mechanism of steel frame support set by actual profile
(National Mining University, 2016-03-30)Purpose. The problem of simulating steel frame irreversible deformation and displacement remains unsolved. The purpose of this research was to develop a new approach to simulation of frame yield support. Methods. We used ... -
Improvement of hole drilling technology for ore drawing intensification
(National Mining University, 2018-09-30)Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting. Methods. The drilling parameters were examined for rock dumps. The means of experimental ... -
Improvement of safety management system at the mining enterprises of Ukraine
(National Mining University, 2020-06-30)Purpose. Search for ways and their analysis to improve the safety of mining operations at coal mines in case of inadequate perception of risks or deliberate violation of occupational safety. Methods. An integrated approach ...