Physical and Chemical Geotechnologies

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Volume 7 (2023)

Research of geomechanical processes in the rock mass during the gasification of coal

Volodymyr Falshtynskyi1, Roman Dychkovskyi1*, Vasyl Lozynskyi1, Pavlo Saik1

1Dnipro University of Technology, Dnipro, Ukraine

*Corresponding author: dychkovskyi.r.o@nmu.one

Abstract

In the article, it is provided the technical and technological aspects of the thin seam coals gasification. The gasification of thin coal seams presents a complex interplay of geomechanical processes within the surrounding rock mass. This research delves into the intricate dynamics governing such processes to provide insights crucial for efficient and safe gasification operations. Employing advanced analytical techniques, including numerical modeling and laboratory experiments, this study scrutinizes the behavior of the rock mass under gasification-induced stress and temperature changes. By examining factors such as rock deformation, fracturing patterns, and gas permeability variations, the research aims to elucidate the underlying mechanisms shaping the geomechanical response during coal seam gasification. The findings not only contribute to the fundamental understanding of rock behavior in gasification environments but also offer practical implications for optimizing gas extraction techniques and ensuring the integrity of surrounding geological formations.

Keywords: coal, thin seams, borehole mining, gasification, economical aspects

References
  1. Savostianov, O.V. (2016). Methods of forecasting geomechanical processes for the selection of technological parameters for developing shallow layers. NTU NGU, 216.
  2. Dychkovskyi, R., Shavarskyi, I., Saik, P., Lozynskyi, V., Falshtynskyi, V., & Cabana, E. (2020). Research into stress-strain state of the rock mass condition in the process of the operation of double-unit longwalls. Mining of Mineral Deposits, 14(2), 85–94. https://doi.org/10.33271/mining14.02.085
  3. Falshtynskyy, V., Dychkovskyy, R., Lozynskyy V., & Saik. P. (2012). New method for justification the technological parameters of coal gasification in the test setting. (2012). Geomechanical Processes during Underground Mining, 211–218. https://doi.org/10.1201/b13157-36
  4. Dychkovskyi, R. O., Lozynskyi, V. H., Saik, P. B., Petlovanyi, M. V., Malanchuk, Y. Z., & R. Malanchuk, Z. (2018). Modeling of the disjunctive geological fault influence on the exploitation wells stability during underground coal gasification. Archives of Civil and Mechanical Engineering, 18(4), 1183–1197. https://doi.org/10.1016/j.acme.2018.01.012
  5. Choi, S. O., Lee, B. J., & Shin, H. S. (2006). Geological and geotechnical investigation on in situ stress regime around the Yangsan Fault Zone in Korea. Tunnelling and Underground Space Technology, 21(3–4), 243. https://doi.org/10.1016/j.tust.2005.12.021
  6. Liu, B., Meng, W., Zhao, Z., Lin, T., & Zhang, J. (2023). Coupled thermal-hydro-mechanical modeling on characteristics of excavation damage zone around deep tunnels crossing a major fault. Tunnelling and Underground Space Technology, 134, 105008. https://doi.org/10.1016/j.tust.2023.105008
  7. Yindeesap, P., Ngaopitakkul, A., & Leelajindakrairerk, M. (2015). Study of Characteristics of Fault in Overhead and Underground Cable Distribution System Using Experimental Test Bench. Proceedings of The 3rd International Conference on Intelligent Systems and Image Processing 2015. https://doi.org/10.12792/icisip2015.065
  8. Falshtyns’Kyy, V., Dychkovs’Kyy, R., Lozyns’Kyy, V., & Saik, P. (2013). Justification of the gasification channel length in underground gas generator. Mining of Mineral Deposits, 125–132. https://doi.org/10.1201/b16354-22
  9. Blinderman, M. S. (1996). Pressure drop in underground gas generator in gasification of coal bed. Fuel and Energy Abstracts, 37(3), 182. https://doi.org/10.1016/0140-6701(96)88535-3
  10. Tsvetkova, M. (2022). Underground research laboratory (URL) for geological disposal of radioactive waste and possibility for construction in Bulgaria. Review of the Bulgarian Geological Society, 83(3), 275–278. https://doi.org/10.52215/rev.bgs.2022.83.3.275
  11. Falshtynskyi, V., Saik, P., Lozynskyi, V., Dychkovskyi, R., & Petlovanyi, M. (2018). Innovative aspects of underground coal gasification technology in mine conditions. Mining of Mineral Deposits, 12(2), 68–75. https://doi.org/10.15407/mining12.02.068
  12. Falshtynskyi, V. S., Dychkovskyi, R. O., Lozynskyi, V. G., & Saik, P. B. (2021). Determination of the Technological Parameters of Borehole Underground Coal Gasification for Thin Coal Seams. Journal of Sustainable Mining, 12(3). https://doi.org/10.46873/2300-3960.1296
  13. Xin, L., Wang, Z., Wang, G., Nie, W., Zhou, G., Cheng, W., & Xie, J. (2017). Technological aspects for underground coal gasification in steeply inclined thin coal seams at Zhongliangshan coal mine in China. Fuel, 191, 486–494. https://doi.org/10.1016/j.fuel.2016.11.102
  14. Lozynskyi, V., Dichkovskiy, R., Saik, P., & Falshtynskyi, V. (2018). Coal Seam Gasification in Faulting Zones (Heat and Mass Balance Study). Solid State Phenomena, 277, 66–79. https://doi.org/10.4028/www.scientific.net/ssp.277.66
  15. Falshtynskyi, V., Lozynskyi, V., Saik, P., Dychkovskyi, R., & Tabachenko, M. (2016). Substantiating parameters of stratification cavities formation in the roof rocks during underground coal gasification. Mining of Mineral Deposits, 10(1), 16–24. https://doi.org/10.15407/mining10.01.016
  16. Lucas, J. (1975). Design optimization in underground coal systems. Section 1. Structural parameters of coal measure rocks. Section 2. Longwall mining system strata simulator. Section 3. Design criteria for underground roof-truss support systems. Interim report, April--June 1975. Office of Scientific and Technical Information (OSTI). https://doi.org/10.2172/5129731
  17. Bruggink, P. R., & Davis, B. E. (1981). Underground Coal Gasification Product Quality Parameters. All Days. https://doi.org/10.2118/10188-ms
  18. Falshtynskyi, V., Dychkovskyi, R., Saik P., & Lozynskyi, V. (2014). Some aspects of technological processes control of an in-situ gasifier during coal seam gasification. Progressive Technologies of Coal, Coalbed Methane, and Ores Mining, 121–124. https://doi.org/10.1201/b17547-20
  19. Bazaluk, O., Lozynskyi, V., Falshtynskyi, V., Saik, P., Dychkovskyi, R., & Cabana, E. (2021). Experimental Studies of the Effect of Design and Technological Solutions on the Intensification of an Underground Coal Gasification Process. Energies, 14(14), 4369. https://doi.org/10.3390/en14144369
  20. Dychkovskyi, R., Falshtynskyi, V., Ruskykh, V., Cabana, E., & Kosobokov, O. (2018). A modern vision of simulation modelling in mining and near mining activity. E3S Web of Conferences, 60, 00014. https://doi.org/10.1051/e3sconf/20186000014
  21. Lemke, F., & Müller, J.-A. (2003). Self-Organising Data Mining. Systems Analysis Modelling Simulation, 43(2), 231–240. https://doi.org/10.1080/02329290309367
  22. Everett, J. E., Howard, T. J., & Jupp, K. (2010). Simulation modelling of grade variability for iron ore mining, crushing, stockpiling and ship loading operations. Mining Technology, 119(1), 22–30. https://doi.org/10.1179/037178410x12633834652411
  23. Cabana, E., Falshtynskyi, V., Saik, P., Lozynskyi, V., & Dychkovskyi, R. (2018). A concept to use energy of air flows of technogenic area of mining enterprises. E3S Web of Conferences, 60, 00004. https://doi.org/10.1051/e3sconf/20186000004
  24. Saik, P., Falshtynskyi, V., Lozynskyi, V., Dychkovskyi, R., Berdnyk, M., & Cabana, E. (2023). Substantiating the operating parameters for an underground gas generator as a basic segment of the mining energy-chemical complex. IOP Conference Series: Earth and Environmental Science, 1156(1), 012021. https://doi.org/10.1088/1755-1315/1156/1/012021
  25. Buzylo, V., Bondarenko, V., Dychkovskiy, R., & Falshtynskiy, V. (2007). Parameters of Injection Fill Above an Underground Gas Generator. Technical, Technological and Economical Aspects of Thin-Seams Coal Mining, International Mining Forum, 2007, 89–95. https://doi.org/10.1201/noe0415436700.ch11
  26. Pivnyak, G., Dychkovskyi, R., Falshtynskyi, V., & Cabana, E. C. (2017). Energy Efficiency and Economic Aspects of Mining Wastes Utilization within the Closed Cycle of Underground Gas Generator. Advanced Engineering Forum, 25, 1–10. https://doi.org/10.4028/www.scientific.net/aef.25.1
  27. Duda, J. (1978). Basic estimated capital investment and operating costs for underground bituminous coal mines utilizing a continuous mining system. [Effect of mine size and DCF]. Office of Scientific and Technical Information (OSTI). https://doi.org/10.2172/6421799
  28. Luft, S., & Skrzek, T. (2018). Effect of the exhaust gas recirculation ratio and the energy share of the gaseous fuel on basic operating parameters and exhaust emissions in a dual-fuel compression ignition engine operating on natural gas. 2018 XI International Science-Technical Conference
  29. Ang, Z. Y. A., Woo, W. L., & Mesbahi, E. (2017). Prediction and analysis of energy generation from thermoelectric energy generator with operating environmental parameters. 2017 International Conference on Green Energy and Applications (ICGEA). https://doi.org/10.1109/icgea.2017.7925459