Перегляд Mining of Mineral Deposits по назві
Зараз показуються 173-192 з 354
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Mitigating the adverse environmental impact resulting from closing down of mining enterprises
(National Mining University, 2018-09-30)Purpose is to mitigate the adverse environmental impact in the context of both territory and water resources while closing down of mining enterprises. Methods. Experiments and laboratory studies were carried out to determine ... -
Mitigation of the environmental risks resulting from diesel vehicle operation at the mining industry enterprises
(National Mining University, 2020-06-30)Purpose is to predict potentially hazardous effects of diesel vehicles of mining enterprises on the environment and to minimize the environmental risks caused by these impacts by modifying motor fuels with special ... -
Modeling hydrodynamics of the flushing fluid intermittent flow in the hydraulic system of the diamond bit
(National Mining University, 2017-06-30)Purpose. To study the effect produced by the intermittent flushing on hydrodynamic processes in the hydraulic system of a diamond bit. Methods. Mathematical modeling methods and CFD experiment. Findings. A mathematical ... -
Modeling of bearing massif condition during chamber mining of ore deposits
(National Mining University, 2016-06-30)Purpose. To examine rock mass stress changes in hanging wall and footwall rocks of the deposit during mining of primary and secondary stoping chambers. Methods. Analytical research into stress-strain state around stoping ... -
Modeling of the lifting of a heat transfer agent in a geothermal well of a gas condensate deposit
(National Mining University, 2020-06-30)Purpose is to develop mathematical model of nonisothermal inflow and lifting of the recovered gaseous mixture (i.e. geothermal fluid) of a well taking into consideration dynamic coefficient of heat transfer and thermal ... -
Modeling of the power section of downhole screw motors
(National Mining University, 2017-09-30)Purpose. Downhole screw motors (DSMs) are commonly used for drilling wells of various applications. The problem is to ensure reliable operation of DSM, particularly its power section “rotor – stator”. To evaluate its ... -
Modeling the drainage facilities operation at the prospective construction site on the Dnipro floodland
(National Mining University, 2017-06-30)Purpose. To carry out predictive assessment of the hydrodynamic regime at the prospective construction site on the Dnipro floodland in order to choose an expedient drainage system and substantiate the drainage parameters ... -
Modeling the formation of high metal concentration zones in man-made deposits
(National Mining University, 2018-06-30)Purpose. To study conditions of forming the zones of high metal concentration in metal-containing man-made deposits. To assess the likelihood of metal concentration in the placer core. Methods. Analysis of the conditions ... -
Modeling the process of mineral rocks cutting with a tool made of polycrystallinе superhard materials
(National Mining University, 2017-09-30)Purpose. To analyze the process of rocks cutting by a tool made of polycrystallinе superhard materials (PSM). Methods. Mathematical modeling of rock destruction process. Findings. A model of deformation and fracturing ... -
Modelling of deep wells thermal modes
(National Mining University, 2019-03-30)Purpose. Investigation of various heat-exchange conditions influence of the tower liquid on the deep wells thermal conditions. Methods. Methods of heat-exchange processes mathematical modeling are used. On the basis of ... -
Modelling the influence of gaseous products of explosive detonation on the processes of crack treatment while rock blasting
(Dnipro University of Technology, 2021-09-30)Purpose is mathematical modeling of fracturing as well as influence of gaseous products of explosive detonation on the changes in rock strength. Methods. Mathematical model, using foundations of Griffith theory, has been ... -
Models and methods to make decisions while mining production scheduling
(National Mining University, 2019-12-30)Purpose is to develop a new approach to the design of mining operations basing upon models and methods of decision making. Methods. The paper has applied a complex approach involving approaches of decision-making theory. ... -
Multi-purpose sorbent production by coal ash recycling
(National Mining University, 2016-03-30)Purpose. The main purpose of the work is to increase adsorption capacity of the carbon-containing sorbent. Methods. Adsorption and filtration processes were studied with the aid of chemical and physical methods, plotting ... -
Neural simulation-based analysis of the well wall stability while productive seam penetrating
(Dnipro University of Technology, 2021-12-30)Purpose is the development of mathematical models to evaluate deformation of parameters of the rock mass-well geological and engineering system within the anisotropic media. Methods. Both mathematical and neural modeling ... -
New technology for mineral deposits prediction to identify prospective areas in the Zhezkazgan ore region
(Dnipro University of Technology, 2021-06-30)Purpose. Exploration and predicting the prospective areas in the Zhezkazgan ore region to set up detailed prospecting and evaluation works using new integrated technologies of prediction constructions in the mineral ... -
New theory for the rock mass destruction by blasting
(Dnipro University of Technology, 2021-06-30)Purpose. To develop a new theory for the rocks destruction by blasting using a description of the formation processes of zones with various mass state around the charging cavity. Methods. The new theory for the rock mass ... -
Nickel discretization and quality review in Gllavica mine, Kosovo
(Dnipro University of Technology, 2021-03-31)Purpose. Professional approach to mineral deposit evaluation and estimation of Ni is done by modeling the ore body presenting the interest zone to be exploited. Methods. With the intensive development of professional ... -
Non-destructive testing of rock bolt fastening as an element of monitoring the state of mine workings
(National Mining University, 2019-03-30)Purpose. To substantiate the informative parameter, to develop the method and equipment for non-destructive testing (NDT) of rock bolt fastening, as an element of geomechanical monitoring of the mine workings state. Methods. ... -
Nonlinear criteria and the influence of the average principal stress on rocks destruction
(National Mining University, 2018-12-30)Purpose. Consider possible series methods of Mohr-Coulomb nonlinear criterion that takes into account stresses in the plane of fracture. Investigate the influence of the average principal stress on rocks destruction when ... -
Northeastern part of the Bilanivske ferruginousquartzite quarry: Risks of mining allotment
(Dnipro University of Technology, 2021-09-30)Purpose. Substantiation of the managerial decisions to minimize the risks of mining the Bilanivske ferruginous quartzite quarry on its northeastern margin. Methods. The legislative, methodological, cartographic and ...