Перегляд Mining of Mineral Deposits по назві
Зараз показуються 49-68 з 354
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Damage to flexible pipes of coiled tubing equipment due to corrosion and fatigue: methods and approaches for evaluation
(National Mining University, 2017-12-30)Purpose. To propose an engineering approach for evaluating surface corrosion fatigue of flexible pipes of coiled tubing equipment, on the basis of the generalized data about corrosion fatigue behaviour of structural steels ... -
Dependence between the height of rocks displacement zone with fissure and the size of stopes
(National Mining University, 2016-12-30)Purpose. To establish dependences describing changes in the height of rocks displacement zone with fissure in the course of stope development using experimental data about the stopes’ dimensions and parameters of the land ... -
Design of bottom hole assemblies with two rock cutting tools for drilling wells of large diameter
(National Mining University, 2020-09-30)Purpose. A methodology development for calculating the bottom hole assemblies (BHA) with two rock cutting tools for drilling the wells of large-diameter with an ability to manage the trajectory. Methods. A mathematical ... -
Designing cutting tools of mining machines for coal auger mining
(National Mining University, 2016-09-30)Purpose. The need for new technologies and techniques for the efficient development of thin coal seams. Methods. Mathematical and experimental modeling of the contact interaction of multipoint cutter with the rock. ... -
Destruction of rocks by the non-explosive depleting compounds during mining
(National Mining University, 2016-03-30)Purpose. Justification of the possibility of non-explosive coherent rocks destruction while carrying out stratal underground mine workings on the basis of the set of dependencies describing changes in physical and mechanical ... -
Determinants of environmental degradation: reflections on the impact of identified economic variables on the environment
(National Mining University, 2019-12-30)Purpose. The main objective of this study is to investigate the determinants of environmental degradation within the broader framework of the environmental Kuznets Curve analysis. To better understand the economic impact ... -
Determination of basic calculation and experimental parameters of device for bore hole cleaning
(National Mining University, 2016-09-30)Purpose. To substantiate the design and operating technological parameters of the device for the interval bore hole cleaning departing from the set dependences of active jets formation in the flow through the blade ... -
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) ... -
Determination of the suitable drilling operating parameters in different geological formations El-Sharara Oil Field (South-Western Libya)
(National Mining University, 2018-09-30)Purpose. The objective of this study is to determine the best operating conditions for the most notable drilling parameters (i.e. weight on bit (WOB), rotary drilling speed (RPM), and characteristics of drilling fluid) ... -
Determining and determinable factors influencing the size of zone of land-use restriction
(National Mining University, 2020-03-30)Purpose. Identification and systematization of determining and determinable factors that affect the size of land use restriction zones to ensure both the legal component of land rights and the well-being of society as a ... -
Determining local wetness conditions within the mined lands using GIS
(National Mining University, 2020-12-30)Purpose. To provide methodologically determining local wetness conditions within Kryvbas mined lands taking into consideration the surface structure and using geoinformation technologies. Surface structure is the determinative ... -
Determining patterns of the geomechanical factors influence on the fastening system loading in the preparatory mine workings
(National Mining University, 2020-03-30)Purpose. Substantiation of calculating the rational parameters of reaction and yielding property of the fastening system in the preparatory mine workings. Methods. The stress-strain state analysis of the “massif – support” ... -
Developing information systems of operation schedules to stabilize the grade of a mineral
(National Mining University, 2017-12-30)Purpose. To develop information technology making it possible to obtain ore flow with the required grade parameters in the context of open-pit mining owing to the implementation of methods and algorithms optimizing operation ... -
Development and analysis of computational model of geomechanical system “layered massif – working support”
(National Mining University, 2016-06-30)Purpose. Substantiating the method for forecasting rock pressure manifestation in the system “layered massif – working support” on the basis of displacement patterns detection at any arbitrary point of the preparatory ... -
Development and testing of an algorithm for calculating the load on support of mine workings
(Dnipro University of Technology, 2021-03-31)Purpose. The purpose is to develop the calculation methods for minimizing the load on the fastening system of the preparatory mine working in difficult mining and geological conditions of its maintenance. Methods. By ... -
Development of a model of contact shoe brake-drum interaction in the context of a mine hoisting machine
(National Mining University, 2017-12-30)Purpose. To develop models of contact brake shoe-drum interaction of a mine hoisting machine while braking, taking into account final bending stiffness of a beam and the effect of friction forces on the distribution of a ... -
Development of a research methodology and analysis of the stress state of a parting under the joint and downward mining of coal seams
(National Mining University, 2018-03-30)Purpose. The investigation of the stress-strain state (SSS) of a parting under the joint and downward mining of coal seams. Methods. The studies have been carried out on the basis of a computational experiment by means ... -
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 ... -
Development of the landslide risk classification for natural and man-made slopes based on soil watering and deformation extent
(National Mining University, 2020-12-30)Purpose. To summarize and formalize the estimates of landslide risk levels based on the proposed classification of relevant environmental or man-made risks in the regions of Ukraine and local territories, including a ... -
Digital system of quarry management as a SAAS solution: mineral deposit module
(National Mining University, 2019-06-30)Purpose. Improving the efficiency of functioning the mining enterprises and aggregation of earlier obtained results into a unified digital system of designing and operative management by quarry operation. Methods. Both ...