Mining of Mineral Deposits: Recent submissions
Зараз показуються 41-60 з 354
-
Development of composition of cementing slurry for fastening of low-cemented rocks
(Dnipro University of Technology, 2021-06-30)Purpose. Improving the producing capacity and ensuring the stable operation of gas wells that develop unstable, lowcemented reservoirs by preventing the sand entry from the reservoir by means of creating the cement stone ... -
Risk criteria classification and the evaluation of blasting operations in open pit mines by using the FDANP method
(Dnipro University of Technology, 2021-06-30)Purpose. Mineral projects are heavily influenced by risk factors. By providing evidence-based information and analysis to make informed decisions about how to choose between options, a risk assessment can be made. Methods. ... -
Mathematical modelling of thermal stresses within the borehole walls in terms of plasma action
(Dnipro University of Technology, 2021-06-30)Purpose is the development of a mathematical model to study and describe thermal processes within the borehole wall in terms of plasma-based rock breaking. Methods. The following has been applied: theoretical analysis ... -
Protecting buried pipelines using different shapes of geofoam blocks
(Dnipro University of Technology, 2021-06-30)Purpose. This research presents experimental modeling and numerical analysis on reducing stress and protecting buried pipelines using three arrangements techniques of expanded polystyrene (EPS) geofoam blocks: embankment, ... -
Determination of the injury probability among coal mine workers
(Dnipro University of Technology, 2021-06-30)Purpose. Establishing regularities of change in the injury probability and development of a methodology for determining the injury probability of coal mine workers to improve the occupational health and safety (OSH) ... -
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 ... -
Mathematical model to optimize drilling-and-blasting operations in the process of open-pit hard rock mining
(Dnipro University of Technology, 2021-06-30)Purpose is to determine a function of the reduced expenditures connected with drilling-and-blasting operations, loading and hauling operations, and rock fragmentation depending upon the cost of machine-shift of the applied ... -
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 ... -
Evaluation of exploiting barite, the critical raw material in Slovakia, and benefits of its mining
(Dnipro University of Technology, 2021-06-30)Purpose. There are several deposits of critical raw materials in the Slovak Republic, but currently only one is mined. This is a barite deposit in Spiš, which shows an ever-lower volume of exploited raw material year-on-year. ... -
On the possibilities to apply indices of industrial coal-rank classification to determine hazardous characteristics of workable beds
(Dnipro University of Technology, 2021-06-30)Purpose is to identify behaviour of the graded indices as well as their correspondence to grades, groups, and subgroups of similar coal metamorphic degrees to determine hazardous characteristics of workable beds while ... -
Analyzing a denitration process in the context of underground well uranium leaching
(Dnipro University of Technology, 2021-03-31)Purpose is to increase a sorbent denitration degree in the context of underground uranium leaching while optimizing reagent concentration as well as a degree of the solution activation on the basis of laboratory ... -
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 ... -
Management of land reclamation quality for agricultural use in opencast mining
(Dnipro University of Technology, 2021-03-31)Purpose. Theoretical substantiation of principles and development of recommendations for the choice of technological variant to form the quality of lands of technogenic origin, which would ensure rational spending of funds ... -
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 phosphate mineral composition and waste phosphorite ore
(Dnipro University of Technology, 2021-03-31)Purpose. Theoretical and experimental studies of chemical and mineral composition and the structure peculiarities of phosphorites from Ukrainian deposits to define the degree of their suitability for other industries. Methods. ... -
Openwork scheduling for steep-grade iron-ore deposits with the help of near-vertical layers
(Dnipro University of Technology, 2021-03-31)Purpose is to develop efficient scheduling to excavate steep-grade iron-ore deposits using near-vertical layers relying upon production practices by an open pit of Poltava Mining-and-Processing Integrated Works (MPIW). Methods. ... -
Numerical analysis of reducing tunneling effect on viaduct piles foundation by jet grouted wall
(Dnipro University of Technology, 2021-03-31)Purpose. The target of this study is divided into two parts. The first part is concerned with capability of numerical model to simulate the tunneling process. The second part is related to studying the interaction mechanism ... -
Regularities in the distribution of granulometric composition of tuff while crushing
(Dnipro University of Technology, 2021-03-31)Purpose is to analyze distribution of granulometric composition of tuff as well as ultimate composition and identify dependence of its softening in the process of water saturation based upon a set of experiments to assess ... -
Application of grout slurries with the Defecate addition for effective well cementing
(Dnipro University of Technology, 2021-03-31)Purpose. Research and substantiating the expediency of cement mix formulations of grout slurries with different Defecate additive content and their effective use when cementing the reservoirs prone to absorption of the ... -
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 ...