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Geofluids, Volume 2022, Issue 1, 2022., 2022 The shape of the gasifier cavity and the high temperatures induced by underground coal gasification (UCG) have a significant influence on the failure characteristics of the surrounding rock. In this study, the variations in the mechanical properties of the surrounding rock in gasifier cavities subjected to different temperatures (20–700°C) were ...
Yue Shi +6 more
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Geofluids, Volume 2022, Issue 1, 2022., 2022 Based on the thermodynamic and elastodynamic theories, the controlling equation of temperature‐stress coupling action on rocks containing random damage units is established by combining the Mogi‐Coulomb damage criterion. And the numerical calculation model of combustion cavity expansion under temperature‐stress coupling condition is established by ...
Zhaolin Li +4 more
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Advances in Materials Science and Engineering, Volume 2020, Issue 1, 2020., 2020 Rock destruction under high‐temperature conditions is a key issue for nuclear waste treatment projects, underground coal gasification, and improvement of the use of geothermal energy for heating. Therefore, in this study, various methods and techniques were integrated to study the changes in mechanical properties, mineral composition, and microscopic ...
Jian Li +3 more
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Underground coal gasification - the Velenje Coal Mine energy and economic calculations [PDF]
Chemical Industry and Chemical Engineering Quarterly, 2017 Underground coal gasification (UCG) is a viable possibility for the exploitation of vast coal deposits that are unreachable by conventional mining and can meet the energy, economic and environmental demands of the 21st century.
Konovšek Damjan +6 more
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Modeling and Control of Energy Conversion during Underground Coal Gasification Process
Energies, 2022 The underground coal gasification (UCG) technology is an unconventional method of coal mining, and its approaches represent new scientific knowledge [...]
Marek Laciak, Ján Kačur, Milan Durdán
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CFD Simulation of Temperature Variation in Carboniferous Rock Strata During UCG
Journal of Sustainable Mining, 2013 The numerical simulation was based on the computational fluid dynamics formalism in order to identify the change of temperature in rock strata during underground coal gasification (UCG).
Tomasz Janoszek +2 more
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MODELING OF MATERIAL BALANCE FROM THE EXPERIMENTAL UCG
Acta Polytechnica, 2020 The underground coal gasification is a continually evolving technology, which converts coal to calorific gas. There are many important parameters in this technology, which are difficult to measure.
Milan Durdán +4 more
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Quantitative Evaluation of Underground Coal Gasification Based on a CO2 Gasification Agent
Energies, 2023 Using carbon dioxide as a gasification agent for underground coal gasification (UCG) can not only reduce carbon dioxide emissions but is also expected to lead to a new natural gas technology revolution and ensure national energy security.
Hao Chen +7 more
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Prediction method of surface subsidence due to underground coal gasification under thermal coupling
Meitan kexue jishu, 2023 Underground coal gasification (UCG) is an essential part of the low-carbon green coal mining technology system. The implementation of the “double carbon” goal of the coal industry has brought excellent development opportunities for UCG. However, UCG will
Huaizhan LI +6 more
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An Overview of the Chinese UCG Program
Data Science Journal, 2007 Coal is the dominant source of energy in China, but about 50% of the coal resource is left underground unmined. Because of this, the "long-tunnel, large section, two-stage" Underground Coal Gasification (UCG) technology has been put forward, and the UCG ...
Yulan Li, Xinxing Liang, Jie Liang
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