Перегляд Mining of Mineral Deposits по назві
Зараз показуються 127-146 з 354
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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 ... -
Improving efficiency of information measurement system of coal mine air gas protection
(National Mining University, 2017-03-30)Purpose. Development of scientific approaches to creation of high-precision and high-speed optoelectronic measurement systems within the complex of air gas safety of coal mines by means of the developed and implemented ... -
Improving rock classification in terms of explosivity
(National Mining University, 2019-09-30)Purpose. To improve rock classification in terms of explosivity relying upon the detailed analysis of characteristics of rating classifications available in the Russian Federation and in the world. Methods. Complex approach ... -
Improving state regulation of sustainable development of fuel and energy resources in Ukraine
(National Mining University, 2016-06-30)Purpose. Rationale for sustainable development of fuel and energy resources in Ukraine for the period up to 2030 taking into account improvement of public rental policy, balanced growth of GDP, stimulation of technical and ... -
Improving the accuracy of predicting the hazard of the earth’s surface failure formation during underground mining of mineral deposits
(Dnipro University of Technology, 2021-12-30)Purpose. Development of a new approach to improving the accuracy of predicting situations in which the earth’s surface failures occur as a result of undermining a rock mass during the development of mineral deposits. Methods. ... -
Improving the efficiency of blasting operations in mines with the help of emulsion explosives
(National Mining University, 2018-03-30)Purpose. To improve the efficiency of blasting operations in mines taking into consideration the upgrading of equipment used to charge blastholes as well as application of high-productive mining equipment of new ... -
Improving the technology of uranium mining under the conditions of high groundwater pressure
(National Mining University, 2020-09-30)Purpose. Substantiation of technological solutions for uranium mining by the method of In-Situ Leach Mining (ISL) under the conditions of the high groundwater pressure. Methods. Analysis of mining-and-geological conditions ... -
In-ground vibration propagation characteristics during underground blasting
(National Mining University, 2019-12-30)Purpose. In this study, we investigated the vibration propagation characteristics in ground caused by the explosion pressures during ground and underground blasting. In addition, the use of Styrofoam as a simulation medium, ... -
Increasing stability of underground mine workings by forming new geotechnical properties of adjoining layers via roller compaction
(2016-03-30)Purpose. To create a model reproducing the process of forming geotechnical properties of the rock massif adjoining circuit of underground excavation by roller compaction method incorporating hardening and creating the zone ... -
Industrial research into massif zonal fragmentation around mine workings
(National Mining University, 2016-03-30)Purpose. The main purpose of the work is identification of massif zonal fragmentation around mine workings by means of industrial methods of research. Methods. Research into processes of massif zonal fragmentation around ... -
Influence of composite slope geometrical parameters on soft rock slope stability
(National Mining University, 2020-03-30)Purpose. To analyze the key parameters influencing the stability of a composite soft rock slope. Methods. Description of the key geometrical parameters of a composite slope and their influence on soft rock slope stability. ...