Numerical modelling of massif zonal structuring around underground working

Kononenko, Maksym; Khomenko, Oleh; Sudakov, Andrii; Drobot, S; Lkhagva, Ts

doi:10.15407/mining10.03.101

Cited by 12 publications

(13 citation statements)

References 7 publications

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“…На учнів повинна оформлятися відповідна форма допуску. До розробки навчальних планів і програм навчання необхідно залучати фахівців МОН України (Pivnyak, Shvets, & Palekhova, 2016), ДК "Ядерне паливо" (Kononenko, Khomenko, Sudakov, Drobot, & Lkhagva, 2016), ДУЕК "Мон-Атом" (Bilegsaikhan, Bat-Ochir, Khomenko, & Lkhagva, 2014), а також фахівців інших іноземних компаній з виробництва ядерного палива, що постав-ляють в Україну нові технології та обладнання. Після розробки навчальних планів і програм в коледжі необхідно створити сучасну навчально-матеріальну базу та укомплектувати відповідними інженерно-технічними та науково-педагогічними кадрами (Serdyuk, Stus', & Lyashenko, 2011).…”

Section: підготовка робочих кадрівunclassified

Nuclear-and-fuel power industry of Ukraine: production, science, education

Khomenko¹,

Tsendjav²,

Kononenko³

et al. 2017

Min. miner. depos,

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Purpose. To define relevant problems and propose ways for development of production, scientific and educational spheres associated with nuclear-and-fuel power industry of Ukraine. Methods.The current state of uranium and zirconium production, as well as accompanying enterprises has been analyzed. Issues related to training of workers, engineers and highly-qualified personnel are considered in the context of implementation of the State target economic program "Uranium of Ukraine". Findings.The impediments in the development of production, scientific and educational spheres on the way of creating the closed nuclear-and-fuel cycle in Ukraine are determined.Originality. The author suggests forming an administrative inter-branch body with pedagogic and research functions that will be able to successfully solve production, scientific and educational problems in structural units of nuclearand-fuel cycle of Ukraine.Practical implications. The paper laid the groundwork for creating a corporate educational institution of power engineering profile in Ukraine which will solve pivotal problems in production, scientific and educational spheres of nuclear-and-fuel cycle.

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Section: підготовка робочих кадрівunclassified

Nuclear-and-fuel power industry of Ukraine: production, science, education

Khomenko¹,

Tsendjav²,

Kononenko³

et al. 2017

Min. miner. depos,

Self Cite

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“…Diameter of an extraction chamber as well as its inclina tion angle is determined with the help of operation parameters of a well hydraulic mining; it varies during the process [14]. Floor roughness depends upon rock type, its fracture mode [15], and upon zonal disintegration [16].…”

Section: Udc 622272mentioning

confidence: 99%

Substantiating parameters of zeolite-smectite puff-stone washout and migration within an extraction chamber

Malanchuk¹,

Moshynskyi²,

Korniienko³

et al. 2019

NVNGU

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SToNe wAShouT AND miGrATioN wiThiN AN exTrAcTioN chAmber Purpose. To substantiate parameters of zeolitesmectite puffstone deposit hydromining method while analyzing dependences between physicotechnological indices of hydromining equipment and rock mass characteristics, which will help optimize the extraction technique. methodology. Complex research approach (i.e. field observations, laboratory tests, and bench testing) is the methodological basis to solve the problem. The approach involves system analysis, physical modeling of hydrodynamic processes, and outcome analysis using MаtLаb mathematical software package. findings. Dependences of zeolitesmectite puffstone failure upon a mouthpiece diameter, water pressure, washout radius, and gravity streaming hydraulic transportation within an extraction chamber have been determined. Effect of kinetic energy of a falling slurry stream on the decrease in the specific power consumption in the process of rock transportation over an extraction chamber floor has been identified. Power consumption dependence upon hydraulic monitor dimensions and working agent pressure is of quadratic nature: the increased pressure of a working agent in front of a mouthpiece, power consumption of the washout increases, and specific water consumption drops. originality. For the first time, an approach to describe zeolitesmectite puffstone failure taking into consideration hydrody namic puffstone washout, hydraulic mixture migration within an extraction chamber, and transportation of the mineral has been applied. Relying upon power consumption to washout hydraulic mixture and transport it within a washout chamber, both linear nature and directlyproportional dependence of transport capacity upon hydraulic monitor loss and chamber floor slope has been determined. Power consumption dependence has been defined for different types of mouthpieces and working agent pressure in order to avoid cuts and layerbylayer washout of a mineral. Practical value. The obtained results can be applied to improve dominating parameters influencing the hydrodynamic process for zeolitesmectite puffstone washout. For the purpose, rational efficiency of puffstone failure has been identified as well as ro tational angle of a lateral mouthpiece of a jet head at 15-20 m height in terms of layerbylayer washout with rock migration over a distance being equal to a half of the washout diameter. Real conditions (for zeolitesmectite puffstones) have been determined under which minor jet velocity variation from the determined parameters results in a cut or in a fall of the washout chamber.

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“…On the basis of conducted industrial (methods of observation and estimates, mine survey, unloadings of the massif, deformation of boreholes and deep reference points) [Khomenko et al, 2016: 1], laboratory (methods of equivalent, optical-and-polarizing and electrowire materials) [Khomenko et al, 2016: 2] and theoretical (finite element method and thermodynamic method) [Kononenko et al, 2016] research on formation of zonal structures around mine workings, a new classification of research methods of stress-strain state of rocks by means of well-known methods sorting on sign "the way of representation of the massif" has been offered. Also, the synergetic group of methods that consisting from thermodynamic method, a modifed entropy method as parts of the thermodynamic theory [Lavrinenko & Lysak, 1977], and developed energy method [Khomenko, 2012] is entered.…”

Section: Analysis Of Scientific Problemmentioning

confidence: 99%

Zonal-and-Wave Structure of Open Systems on Micro, Mega- and Macrolevels of the Universe

Khomenko¹,

Barna²

2019

P&C

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The analysis of formation of wave astrodynamics as the applied science that studying zonal-andwave structure of megasystems in the Universe is executed. The perspective of disclosure of physical essence of the phenomenon of rocks zonal disintegration around underground mine workings is analysed. The results of a research that received by means of well-known and new synergetic methods, which have discovered zonal-and-wave nature of the examined phenomenon, are described. The discovered phenomenon has been designated as zonal capsulation of mine working with definition of gradients of stresses, density, temperature and other factors of a power condition of the massif with formation of ring energy zones, their quantities, amount and shape, sinusoidal-and-wave stresses and ring areas of deformation. The regularities of distribution of matter and energy in systems with various large-scale levels have been investigated and accepted as comparative data for confirmation of level of convergence of the received results. Increase in large-scale level of system from micro to mega-and macrolevel led to equivalent increase in density of a core, constant of gravitation and the period of fluctuation of a surface, and the period of attenuation of wave fluctuations and a ratio of the sizes of energy zones remained constant. The received sedate dependence of a ratio of the sizes of energy zones for the examined systems coincides with the established verification of sedate dependences that describing a ratio of the sizes of energy zones in mine working's capsule which convergence reaches up to 100%. The received results are the incontestable proof of the uniform nature of interaction of the open evolving systems at all large-scale levels and allows to draw analogies during development of methodological approaches to the solution of similar problems.

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Numerical modelling of massif zonal structuring around underground working

Cited by 12 publications

References 7 publications

Nuclear-and-fuel power industry of Ukraine: production, science, education

Nuclear-and-fuel power industry of Ukraine: production, science, education

Substantiating parameters of zeolite-smectite puff-stone washout and migration within an extraction chamber

Zonal-and-Wave Structure of Open Systems on Micro, Mega- and Macrolevels of the Universe

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Numerical modelling of massif zonal structuring around underground working

Cited by 12 publications

References 7 publications

Nuclear-and-fuel power industry of Ukraine: production, science, education

Nuclear-and-fuel power industry of Ukraine: production, science, education

Substantiating parameters of ­zeolite-smectite puff-stone washout and migration within an extraction chamber

Zonal-and-Wave Structure of Open Systems on Micro, Mega- and Macrolevels of the Universe

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Substantiating parameters of zeolite-smectite puff-stone washout and migration within an extraction chamber