Простийпошук |
Розширенийпошук |
Покажчики
|
Професійний пошук |
Рубрикатор НБУВ |
Розподілений пошук |
Бази даних
Наукова періодика України - результати пошуку
Книжкові видання та компакт-дискиЖурнали та продовжувані виданняАвтореферати дисертаційРеферативна база данихНаукова періодика УкраїниТематичний навігаторАвторитетний файл імен осіб
 |
Для швидкої роботи та реалізації всіх функціональних можливостей пошукової системи використовуйте браузер "Mozilla Firefox" |
|
|
Повнотекстовий пошук
| Знайдено в інших БД: | Реферативна база даних (6) |
Список видань за алфавітом назв: Авторський покажчик Покажчик назв публікацій  |
Пошуковий запит: (<.>A=Falshtynskyi V$<.>) | |||
|
Загальна кількість знайдених документів : 8 Представлено документи з 1 до 8 |
|||
| 1. | 
Lozynskyi V. G. Experimental study of the influence of crossing the disjunctive geological fault on thermal regime of underground gasifier [Електронний ресурс] / V. G. Lozynskyi, R.O. Dychkovskyi, V.S. Falshtynskyi, P.B. Saik, Ye.Z. Malanchuk // Науковий вісник Національного гірничого університету. - 2016. - № 5. - С. 21-29. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2016_5_6 Purpose. Determining the impact of changes of the geological faults amplitude without breaking the continuity of coal seams and the temperature conditions of underground gasifier based on the experimental data during underground coal gasification. Methodology. Methods of comparative analysis and mathematical modeling, experimental bench testing were used. Findings. The scheme of determining the time of crossing geological fault according to thermocouples was developed. Based on this scheme the analysis of changes of the temperature during displacement amplitude of geological fault variation up to 0,9 of coal seam thickness was conducted. Average time deviation of crossing the fault plane of disjunctive geological fault with underground gasifier was received. Established values make it possible to determine the output of underground gasifier on stable operation regime by a temperature factor. Based on the experimental data it was defined that with increase in the amplitude of geological fault by more than 0,75 of coal seam thickness the process of underground coal gasification turns into the process of underground coal combustion. The results of the research will allow making adjustments to the calculation of heat balance of the gasification process. Originality. It was found that with increase in the amplitude of disjunctive geological faults there appears additional loss of heat resulting from convection heat transfer in the place of coal seam fracturing and reducing of its emission due to changes in the combustion face of underground gasifier. Practical value. Obtained results of bench experimental studies with sufficient precision for practical application can be used to determine the parameters of thermal balance and thermal regime of underground gasifier and provide an opportunity to expand the field of application of an underground coal gasification technology near geological faulting zones and potentially involve substandard deposits of hard coal for underground coal gasification. It will give an opportunity to receive generator gas, chemical products and power energy. | ||
| 2. |
Falshtynskyi V. S. Formation of thermal fields by the energy-chemical complex of coal gasification [Електронний ресурс] / V. S. Falshtynskyi, R. O. Dychkovskyi, P. B. Saik, V.H. Lozynskyi, Cabana E. Caceres // Науковий вісник Національного гірничого університету. - 2017. - № 5. - С. 36-42. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2017_5_8 Purpose. The objective is to generate thermal energy from basic segments of the energy-chemical complex formed on the basis of borehole underground coal gasification with determination of its operation modes. Methodology. The set engineering tasks were performed using, analytical studies, bench studies and field studies represented in research projects, patents, and feasibility studies concerning construction and scientific support while equipment operating of a pilot mine gasifier under the conditions of solid fuel seam gasification in the context of excessive fissuring of rock mass enclosing the gasifier. Studies of thermal and power indices of the station for coal gasification were carried out with the help of Information Program "MTB BUCG" ("Material and Thermal Balance of Borehole Underground Coal Gasification") developed by the researchers of the Department of Underground Mining and the Department of Chemistry (State Higher Educational Institution "National Mining University"). Besides, the Program was piloted using industrial gasifier at experimental mine "Barbara" (Katowice, Poland). Findings. Basic indices of coal gasification station depending upon a type of forced-draft mixture for an underground gasifier were determined. Studies concerning the efficiency of thermal energy generation were carried out using rocks enclosing the underground gasifier and generator gases being the basic heat generating segments of the energy-chemical complex for coal gasification being formed on the territories of operating coal mines or mines at the stage of their closure. Prospects of gasification and thermal energy generation using rock disposals of coal mines have been estimated. Modes of internal heat provision of heat-generating segments of the energy-chemical complex have been determined. Originality. Dependencies of heat-exchange distribution within roof rocks in the process of coal seam gasification depending upon the length of a reaction channel, zones of thermochemical reactions in it and methods of heat exchange have been obtained. Dependence of payback period of cogeneration plant in terms of underground coal gasification on electrical energy and gasification product (generator gas) has been determined. Graph of thermal energy generation in terms of different operation modes of basic segments of energy-chemical complex has been constructed. Practical value. Technological scheme of a thermal utilizer has been developed. The plant provides possibility of thermal energy utilization in the process of coal gasification within the seam occurrence. Basic modes of thermal energy generation at the coal gasification station being a heat-generating segment of the energy-chemical complex have been determined. | ||
| 3. |
Falshtynskyi V. S. Substantiation into "rock massive – underground gasifier” system adaptability of Solenovskyi site in the Donetsk coal basin [Електронний ресурс] / V. S. Falshtynskyi, R. O. Dychkovskyi, P. B. Saik, V. H. Lozynskyi, E. C. Cabana // Науковий вісник Національного гірничого університету. - 2018. - № 3. - С. 14–21. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2018_3_4 | ||
| 4. |
Saik P. B. Efficiency of underground gas generator in consideration of the reverse mode [Електронний ресурс] / P. B. Saik, V. S. Falshtynskyi, V. H. Lozynskyi, E. C. Cabana, M. S. Demydov, R. O. Dychkovskyi // Науковий вісник Національного гірничого університету. - 2020. - № 4. - С. 39-46. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2020_4_8 Purpose. Activation of the processes of well underground coal gasification with the consideration of the reverse mode of the underground gas generator based on the balanced state between the oxidizing and reducing zones of the fire face. Methodology. The underground gas generator efficiency was evaluated based on the analytical and laboratory studies. Analytical substantiation of the implementation of reverse operations in terms of the underground gas generator is based on the quantitative parameters of coal gasification in the oxidizing and reducing zones of the underground gas generator and their advance rates. Laboratory studies were carried out on a stand unit with the modeling of the coal gasification processes. Findings. Efficiency of the underground gas generator operation by reversing with blowing mixtures has been substantiated, which helps to maintain the balance between its oxidizing and reducing zones. Time periods for the reverse operations have been identified on the basis of the averaged value of concentrations of the combustible generator gases on the outlet from the modeled underground gas generator. Originality. Dependences of the changes in displacements of the active underground gas generator zones in terms of the implemented reverse of blowing mixture supply have been obtained with the consideration of mining and geological conditions of the occurrence of coal seam c | ||
| 5. | 
Falshtynskyi V. Innovative aspects of underground coal gasification technology in mine conditions [Електронний ресурс] / V. Falshtynskyi, P. Saik, V. Lozynskyi, R. Dychkovskyi, M. Petlovanyi // Mining of mineral deposits. - 2018. - Vol. 12, Iss. 2. - С. 68-75. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2018_12_2_10 | ||
| 6. |
Dychkovskyi R. Research into stress-strain state of the rock mass condition in the process of the operation of double-unit longwalls [Електронний ресурс] / R. Dychkovskyi, Ia. Shavarskyi, P. Saik, V. Lozynskyi, V. Falshtynskyi, E. Cabana // Mining of mineral deposits. - 2020. - Vol. 14, Iss. 2. - С. 85-94. - Режим доступу: http://nbuv.gov.ua/UJRN/rr_2020_14_2_12 | ||
| 7. |
Falshtynskyi V. Determining the parameters of stratification cavity in rock mass to extract mine methane [Електронний ресурс] / V. Falshtynskyi, P. Saik, V. Lozynskyi, B. Toleuov, V. Sulaiev, V. Buketov // Naukovyi visnyk Natsionalnoho Hirnychoho Universytetu. - 2022. - № 6. - С. 30-35. - Режим доступу: http://nbuv.gov.ua/UJRN/Nvngu_2022_6_7 Purpose. Substantiation of the stress-strain parameters of a rock mass state to identify potential mine methane accumulation in the roof rocks of the extraction pillar. Methodology. Characterization of stratification cavity in rock mass for mine methane extraction relied upon analytical studies. The research is based on a method by Professor O. V. Savostyanov to calculate a stress-strain state of rocks. The method has been implemented in GeoDenamics Lite software. The use of the method helps obtain both geometrical and physical parameters of load characteristics for typical rock layers from the coal seam up to the surface. The abovementioned makes it possible to identify areas of rock stratification, coal bench being flaked away, and the number of rock layers after stratification. Mining and geological conditions of the coal seam occurrence and mining technology are the output data for the research. Findings. Analysis of geometrical and physical parameters of load characteristics on the roof rocks of a coal seam has supported the fact that abnormal pressure areas propagate within the rock mass. The listed parameters vary from a seam up to the surface normally both towards the rock mass and towards the mined-out area along with the stope advance. The abovementioned helps define parameters of stratification cavity formation within the roof rocks of an xtraction pillar since the cavities may accumulate mine methane. Originality. Dependencies of the changes in rock layer subsidence height have been derived based upon formation dynamics of the mined-out longwall volume. Regularities of changes in volumes of rock formation stratification cavities have been identified depending upon the strength and thickness of the rock layers; closeness to mining area; and stope advance velocity as well as its length. Practical value. Based upon the method by Professor O. V. Savostyanov, an algorithm has been proposed to define possible mine methane accumulations after mining operations within the extraction pillar are completed. Hence, the areas of methane accumulation will be considered in future as extra sources of fuel material. At the same time, it has been proposed to complement operation mode of a mining enterprise with biogas plants if the produced mine mixture is poor. A technological scheme for the combined mine methane-biogas extraction has been provided. | ||
| 8. | 
Saik P. Studying the features of the implementation of underground coal gasification technology in terms of Lvivvuhillia SE [Електронний ресурс] / P. Saik, R. Dychkovskyi, V. Lozynskyi, V. Falshtynskyi, E. Cabana, L. Hrytsenko // Геотехнічна механіка. - 2020. - Вип. 155. - С. 78-87. - Режим доступу: http://nbuv.gov.ua/UJRN/gtm_2020_155_12 | ||
Попередній перегляд: 
Реферативна БД
 |
| Відділ наукової організації електронних інформаційних ресурсів |
 Пам`ятка користувача |