On the base of studying the current situation in the world mining and 
energy  generation  authors  make  the  prognosis  of  these  sectors  development  and 
involving new methods of the “Technology 5,0”

PIVNYAK, Gennadiy

SHASHENKO, Olexandr

Пивняк, Г. Г.

Пивняк, Геннадий Григорьевич

Півняк, Г. Г.

Півняк, Геннадій Григорович

Шашенко, Александр Николаевич

Шашенко, О. М.

Шашенко, Олександра Миколайовича

English

eLibrary National Mining University

7  PLENARY SESSION  TRENDS OF WORLD COAL MINING DEVELOPMENT AND THERMAL POWER GENERATION   PIVNYAK Gennadiy & SHASHENKO Olexandr  Dnipro University of Technology, Dnipro, Ukraine    Purpose. On the base of studying the current situation in the world mining and energy generation authors make the prognosis of these sectors development and involving new methods of the “Technology 5,0”. Methodology. The studies were carried out through the justification of the post-mining and wastes utilization technologies with the aim of supporting cheap fuel and energetic issues for national economy. Findings. The article deals with the problem of choosing the strategy for coal mining by using traditional and non-traditional technologies. Such proposals are based on investigation of world mining and energy generating trends. The factors of the economic and ecological justification for either extension or termination of the coal enterprises’ functioning are analyzed. The comparison of different indicators for energy generation based on coal combustion and the use of alternative energy sources is given. The concept of synchro-mining is proposed for more effective mining operation and extending the life cycle of coal mine territories is proposed. Social and legislation aspects of such activities were examined for different mining and geological conditions. The researches were conducted within the project # 945-PU-ShUPt/050310-18, financed by PSC “DTEK Pavlogradvuhillia”. Key words: mining technologies, energy generation, synchro-mining, ecological and economic indicators. References 1. Shashenko A., Khoziaikina N., Сherednyk V., Pashkevych M. Energy-saving technologies of the coal seams development / Advanced Engineering Forum Vol. 25 Submitted. Trans Tech Publications, Switzerland. – 2017. – P. 11-19.  2. Shashenko O.M., Khoziaikina N.V., Tereshchuk R.M. Distribution of displacements around a single mine working driven in stratified rock mass – Scientific bulletin of National Mining University Scientific and technical journal. – N 6 (162) – 2017. – p. 40-46. 3. Хозяйкина Н.В. Технологии Synchro-mining на базе угольных шахт, подлежащих закрытию // II Международная конференция по угольной промышленности, 2018 «Тенденции и перспективы добычи, использования угля в Украине и мире» - Электронный ресурс:https://dtek.com/media-center/events/ii-mezhdunarodnaya-konferentsiya-po-ugolnoy-promyshlennosti/ 8  4. Пивняк Г.Г., Шашенко А.Н., Пашкевич М.С. Вторая жизнь угольной шахты в современных экономических условиях / Матеріали міжнар. конф. «Форум гірників - 2017», 03.10 - 07.10.2017 р. Геомеханіка і геотехніка. – Д.: Національний гірничий університет, 2017. – С. 9 – 20. 5. Пивняк Г.Г., Шашенко А.Н., Пашкевич М.С. Synchro-mining: концепція системного державно-приватного партнерства для розвитку гірничодобувних підприємств та регіонів // Матеріали міжнародної конференції «Форум гірників-2013». Пленарне засідання. – Дніпропетровськ: ТОВ «ЛізуновПрес», 2013. – С. 7-17. 6. Шашенко А.Н., Солодянкин А.В., Смирнов А.В. Обеспечение устойчивости протяженных выработок на больших глубинах / // Научно –технический и производственный журнал «Горный вестник Узбекистана», 2014. – Навоий. - № 3 (58), 2014. – С. 69-73. 7. Шашенко А.Н., Хозяйкина Н.В., Король А.Ю. Управление устойчивостью подготовительных выработок угольных шахт с помощью рамно-анкерных систем / // Научно-технический и производственный журнал «Горный Вестник Узбекистана», 2015. – Навоий. - № 1 (60), 2015. – С. 67-72. 8. Шашенко А.Н., Смирнов А.В., Хозяйкина Н.В. Оценка начального поля напряжений при проектировании подземных выработок // Горный информационно-аналитический бюллетень. – 2017. – № 12. – С. 37-49. DOI: 10.25018/0236-1493-2017-12-0-37-49. 9. Lavrov, N.V. (1957): Physical and chemical bases of combustion and gasification of fuel. Metallizdat, Moscow, 40 p. 10. Pivnyak, G., Dychkovskyi, R., Smirnov, A., Cherednichenko, Yu. (2013) Some aspects on the software simulation implementation in thin coal seams mining. Energy Efficiency Improvement of Geotechnical Systems - Proceedings of the International Forum on Energy Efficiency. 1‒10. DOI: 10.1201/b16355-2 11. Mahrous A.M. Ali. (2018): Software application in mining engineering. Mining of Mineral Deposits, 12(1), 48-53. doi:10.15407/mining12.01.048 12. Pivnyak, G,G, Dychkovskyi R.O, Falshtynskyi, V.S. and Cabana, Cáceres Edgar. (2017) Energy Efficiency and Economic Aspects of Mining Wastes Utilization within the Closed Cycle of Underground Gas Generator. Advanced Engineering Forum, 25, 1-10.  doi:10.4028/www.scientific.net/AEF.25.1 13. Шашенко А.Н. Оценка характера природного поля напряжений в задачах геомеханики/ А.Н. Шашенко, Н.В. Хозяйкина, А.В. Скобенко, А.А. Саитова // Матеріали міжнар. конф. «Форум гірників - 2017», 03.10 - 07.10.2017 р. Геомеханіка і геотехніка. – Д.: Національний гірничий університет, 2017. – С. 183-192. 14. Шашенко А.Н. Напряжённо-деформированное состояние породного массива, содержащего одиночную выработку / А.Н. Шашенко, Н.В. Хозяйкина, А.О. Логунова // Матеріали міжнар. конф. «Форум гірників - 9  2016», 05.10 - 08.10.2016 р. Геомеханіка і геотехніка. – Д.: Національний гірничий університет, 2016. – Т. 1. – С. 101-105. 15. Шашенко А.Н., Смирнов А.В., Хозяйкина Н.В. Геомеханическа и экономическая оценка ширины охранного устройства при повторном использовании подготовительных выработок в угольных шахтах // Научно-технический журнал Безопасность труда в промышленности. М.: – 2017. - № 8. – С. 16-20.   SOME ASPECTS OF CHARGE STATIC FIELD POTENTIAL IN THREE-DIMENSIONAL ELECTRODYNAMICS   PIVNYAK Gennadiy, PEVZNER Mendel & MEDVEDEV Andrey Dnipro University of Technology, Dnipro, Ukraine  Purpose. Obtaining the expicit expression for a point charge field potential in three-dimensional electrodynamics when the vacuum polarization is taken into account; comparison of the results obtained by the different methods of calculation. The present work is a continuation of  Ref. [1]. It is of interest from the point of view of further studying the chiral symmetry dynamic breaking in QED3 [2-11] and the properties of planar structures in solid physics [12-15]. Methodology. The numerical calculation of the integral representing the desired potential and the integrand approximation by the fractional-linear function are used. The numerical evaluations are performed with the Wolfram Mathematica 9. Findings. When calculating the potential of the static charge field in QED3 in 1N  approximation, the possibility of using a fractional-linear approximation for a function associated with a polarization operator is investigated. When comparing the application of different variants of fractional-linear approximation for the considered function with the result of numerical integration, it turns out that the three-point approximation is the best one. On the basis of this approximation, an analytical expression is obtained for the required potential and it is shown that when the mass of loop fermions vanishes, this expression does not turn into the known exact expression; the reason for this discrepancy is analyzed. On the basis of the expression for the potential obtained with the help of the three-point approximation, the possibility of weakening the condition for the disappearance of confinement is investigated and it is shown that under the considered approximation this possibility is absent. The work was carried out according to the plan of the state budget subjects of the Physics Department. Key words: three-dimensional electrodynamics, static potential, polarization of vacuum, chiral symmetry breaking, confinement. 

TRENDS OF WORLD COAL MINING DEVELOPMENT AND THERMAL POWER GENERATION

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TRENDS OF WORLD COAL MINING DEVELOPMENT AND THERMAL POWER GENERATION

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