Browsing by Author "Sai, K"
Now showing items 1-15 of 15
-
Basic concept of mining technology
Bondarenko, V; Kovalevska, I; Ganushevych, K; Russkikh, V; Maltsev, D; Mamaikin, O; Lozynskyi, V; Sai, K; Astafiev, D; Malashkevych, D (National Mining University, 2014)The materials concerning global importance of mineral resources in the society life, their amount, origin, classification of deposits and economical aspects are presented. Opening and development technologies, mining ... -
Causes and Consequences of Accidents at Coal Mines
Korotkova, Anastasia; Sai, K.S.; Isakova, M.L. (Видавництво НГУ, 2014) -
DTEK – Development Strategy 2030
Pokusa, Yulia; Astafiev, Denys; Shapovalov, Yakiv; Sai, K.S.; Isakova, M.L. (Видавництво НГУ, 2014) -
Effect of mechanoactivated chemical additives on the process of gas hydrate formation
Bondarenko, V; Svietkina, O; Sai, K (2018-02)This study addresses the production of gas hydrate of methane with a high gas-hydrate-forming content in a solid phase in the isolated system at T=274 K and pressure of 5 MPa and presence of mechanically activated rocks ... -
Geomechanical substantiation of the parameters for coal auger mining in the protecting pillars of mine workings during thin seams development
Petlovanyi, Mykhailo; Medianyk, Volodymyr; Sai, Kateryna; Malashkevych, Dmytro; Popovych, Vasyl (2021)The paper focuses on mining hard-to-reach coal reserves, concentrated in the protecting pillars of main mine workings using auger technology. One of the Western Donbass coal enterprises - Pavlohradska Mine of PJSC DTEK ... -
Innovative technology for producing of gas hydrates from coal mines methane
Sai, Kateryna (Ivano-Frankivsk National Technical University of Oil and Gas, 2019) -
Kinetic features of the dissociation process of gas hydrate deposits
Sai, K.; Petlovanyi, M.; Prokopenko, K. (2019)The research is aimed at revealing the theoretical features of the kinetics of the process of dissociation of natural gas hydrates, the accounting of which is useful in designing technologies for their development. The ... -
Peculiarities of geological and thermobaric conditions for the gas hydrate deposits occurence in the Black Sea and the prospects for their development
Bondarenko, V.; Sai, K.; Petlovanyi, M. (2019)The actuality has been revealed of the necessity to attract the gas hydrate deposits of the Black Sea into industrial development as an alternative to traditional gas fields. This should be preceded by the identification ... -
Physicochemical mechanism of structure formation and strengthening in the backfill massif when filling underground cavities
Petlovanyi, M. V.; Zubko, S. A.; Popovych, V. V.; Sai, K. S. (2020)The strength and microstructural properties of the backfill massif have been studied and assessed when filling underground cavities that pose a threat of mine rocks collapsing in the process of mining mineral deposits. It ... -
Preliminary assessment of the content of valuable components in coal mine waste dumps
Petlovanyi, Mykhailo; Sai, Kateryna (Dnipro University of Technology, 2020) -
Research into thermobaric processes of methane gas hydrates formation
Bondarenko, Volodymyr; Svietkina, Olena; Sai, Kateryna; Petlovanyi, Mykhailo (2020)Based on experimental studies, the paper deals with the dynamics of the methane gas hydrates formation, influenced by the organized media, such as surface-active agents (surfactants, SAA), namely, dibutylphenol treated ... -
Review of man-made mineral formations accumulation and prospects of their developing in mining industrial regions in Ukraine
Petlovanyi, M; Kuzmenko, O; Lozynskyi, V; Popovych, V; Sai, K; Saik, P (National Mining University, 2019-03-30)Purpose. Analysis of the man-made mineral formations of ore mining and smelting, fuel and energy complexes development accumulation, location and prospects amount in the Dnipropetrovsk region. Methods. Comprehensive ... -
STUDY OF THE FORMATION MECHANISM OF GAS HYDRATES OF METHANE IN THE PRESENCE OF SURFACE-ACTIVE SUBSTANCES
Bondarenko, V; Svietkina, O; Sai, K (2017)Досліджено вплив поверхнево-активних речовин на механізм утворення газових гідратів метану. Визначено значення критичної концентрації міцелоутворення (ККМ) розчинів дібутілфенола, обробленого окисом етилену (ДБ), а також ... -
The first year of implementing a new concept of the journal “Mining of Mineral Deposits” of the National Mining University
Lozynskyi, V; Sai, K; Vvedenska, T (National Mining University, 2017-03-30)This article presents the analysis of Ukrainian mining sciences journal – “Mining of Mineral Deposits” (acronym in English MMD). Our paper presents a case study of on journal in the field of mining sciences and describes ... -
Thermodynamic and geomechanical processes research in the development of gas hydrate deposits in the conditions of the Black Sea
Bondarenko, V; Sai, K; Prokopenko, K; Zhuravlov, D (National Mining University, 2018-06-30)Purpose. Research of thermodynamic and geomechanical processes occurring in a gas hydrate body under the influence of an activating agent (sea water from surface layers) in the conditions of the Black Sea by mathematical ...