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Загальна кількість знайдених документів : 5 Представлено документи з 1 до 5 |
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| 1. | 
Prykhodchenko V. F. Effect of time-transgressive faults upon methane distribution within coal seams [Електронний ресурс] / V. F. Prykhodchenko, О. О. Sdvyzhkova, N. V. Khomenko, V. V. Tykhonenko // Науковий вісник Національного гірничого університету. - 2016. - № 1. - С. 31-35. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2016_1_6 Problem solution of efficient methane extraction in coal deposits depends on analysis of their distribution conditions within coal-bearing thickness. Tectonic structure is the most important factor of methane redistribution and retaining within coal-bearing thickness in terms of Western Donbas. Purpose. To determine the effect of tectonic faults of various types and occurrence period upon methane redistribution for the purpose of its efficient extraction. Methodology. Collection, analysis, and generalization of the measuring results of coal seam gas bearing capacity in geological prospecting wells using KA-61core extractor as well as mapping of gas bearing capacity and its derivatives using approximation polynom of three initial stages within the walls of tectonic faults of various types with their following analysis were the methodological basis for the study. Findings. Methane-bearing characteristics of coal seams within the walls of high-amplitude, consedimental, medium-amplitude postsedimental and low-amplitude fault have been analyzed. Maps of local gas-bearing capacity deviations have been developed to demonstrate the effect of these tectonic faults upon localization of methane accumulations. Originality. Effect of various faults as well as methane redistribution within coal seams of Western Donbas has been analyzed for the first time. Practical value. The data of core extractor measuring can be used to analyze the effect of tectonic fault upon coal seam methane-bearing characteristics. The analysis of the developed maps in terms of undetermined fault type allows assuming the time of fault formation as well as the character of its effect upon methane redistribution. | ||
| 2. |
Prykhodchenko V. F. Influence of local orogeny and reservoir characteristics of enclosing rocks on the location of gas traps within the coal bearing deposits [Електронний ресурс] / V. F. Prykhodchenko, N. V. Khomenko, M. V. Zhykalyak, D. V. Prykhodchenko, L. O. Tokar // Науковий вісник Національного гірничого університету. - 2019. - № 5. - С. 11-15. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2019_5_4 Purpose. To determine the nature of the effect of different-type local structures as well as reservoir characteristics of enclosing rocks in the location of gas traps within the coal bearing deposits of Pavlohrad-Petropavlivka and Krasnoarmiisk geological and industrial Donbas regions. Methodology. Analysis and classification of geological stock and published scientific sources. Developing and analyzing maps characterizing location of methane traps within coal bearing formation followed by the analysis of traps. Findings. Connection between location of positive methane bearing anomalies and free methane content within coal seams, and local plicative structures has been identified. The anomalies are connected with structures of both anticlinal and synclinal types. Difference in reservoir characteristics of roof rocks of coal seams within areas under study makes it possible to believe that argillites and aleurites of Krasnoarmiisk district are almost impermeable. If they occur in roof of local folds, they will favour methane conservation. In the context of Pavlohrad-Petropavlivka district, significant permeability of argillite and aleurites results in the fact that they cannot be a shield for folds; it concerns especially gentle folds where fractured zone is formed within arching. Rocks of upper share of a fold may become shield in local synclinal structures. Originality. It has been proved for the first time that in the neighborhood of anticlinal local structures, synclinal local structures of coal seams may have methane accumulations if impermeable rocks are available within the synclinal roof. Practical value. The determined regularities will help to enhance prognostic reliability of methane accumulations within the coal deposits. | ||
| 3. |
Prykhodchenko V. F. Predictability of a small-amplitude disturbance of coal seams in Western Donbas [Електронний ресурс] / V. F. Prykhodchenko, O. M. Shashenko, O. O. Sdvyzhkova, O. V. Prykhodchenko, V. I. Pilyugin // Науковий вісник Національного гірничого університету. - 2020. - № 4. - С. 24-29. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2020_4_6 Purpose. To identify development regularities of a small-amplitude disturbance in terms of typical Western Donbas mine fields and to define the most efficient tendencies of its prediction. Methodology. The methods include analysis, systematization, generalization, and statistical processing of geological and geophysical data; probability analysis. Findings. Such parameters of small-amplitude breakings as amplitudes, slope angles, and length of the disturbances have been geometrized within the fields of Stepova and Yuvileina mines of Pershotravenske Mine Office (MO). The abovementioned helped to develop the statistical distribution of the values. Zonality of the small-amplitude disturbances of coal seams has been determined for the fields of the mines. Parameters of the zones are continuous, which made it possible to extrapolate them to the undisturbed shares of the mine fields. Statistical processing of the data, concerning characteristics of small-amplitude disturbances, became a basis for hypothesizing on the theoretical probabilistic distribution of the values, which helped to predict probable amplitude and length of disturbances within the undisturbed shares of the mine fields. Log data of expendable wells were used to support the prediction results. Caliper logging, showing tectonic disturbances, has been defined as the most informative log index in the context of geological conditions of Yuvileina mine. The log data confirm the prediction with the use of the disturbed area extrapolation. Originality. It has been proved that the small-amplitude disturbances within mine fields of Pershotravenske MO form persistent areas demonstrated steadily in the log data. Among other things, logging is the most informative log index demonstrating tectonic disturbances for the geological conditions of Yuvileina mine. Such geometrical parameters of the disturbances as amplitude and length are subject to the exponential rule of the probability distribution, making it possible to predict the most possible values of the amounts where new stopes are planned for operation. The information concerning disturbance parameters of a coal seam helps to predict the complexity of mining of certain of the fields of Pershotravenske MO, efficient prediction of small-amplitude disturbance of coal seams should involve the integration of geological (zone extrapolation) and geophysical (logging) methods. The analysis of log data of exploration wells within the areas where extrapolation recorded the highest probability of the small-amplitude disturbance formation provides the early decisions as for the efficiency of the site mining to develop the required engineering solutions, and to predict the coal grade deterioration. | ||
| 4. | 
Savchuk V. S. Comparative characteristics of the petrographic composition and quality of coal series С12 and С13 of Prydniporovia block [Електронний ресурс] / V. S. Savchuk, V. F. Prykhodchenko, D. V. Prykhodchenko, V. V. Tykhonenko // Journal of geology, geography and geoecology. - 2021. - Vol. 30(1). - С. 145-152. - Режим доступу: http://nbuv.gov.ua/UJRN/jggg_2021_30(1)__15 | ||
| 5. |
Savchuk V. S. Influence of the geotectonic regime on property formation of coal in the northern edges of the Donetsk basin [Електронний ресурс] / V. S. Savchuk, V. F. Prykhodchenko, D. V. Prykhodchenko, N. V. Khomenko // Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu. - 2023. - № 5. - С. 12-18. | ||
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