Multifractal Characteristics of Pore Structure Evolution in Thermally Damaged Coal-Seam Roof Sandstone Under O2 and CO2 Atmospheres: Implications for Underground Coal Gasification

This study investigated how high-temperature reactive atmospheres associated with underground coal gasification (UCG) differentially modify the pore system of roof sandstone. Roof sandstone from the Shanghai Miao mining area, Inner Mongolia, was conditioned to simulate formation-water saturation and...

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Pubblicato in:	Fractal and Fractional
Autori principali:	Jiaqun Zou, Jijun Tian, Daxing Wang, Feng Shuo, Hanyu Tong, Hongze Guan
Natura:	Articolo
Lingua:	inglese
Pubblicazione:	Multidisciplinary Digital Publishing Institute 2026
Soggetti:	Mining and Gasification Technologies Hydrocarbon exploration and reservoir analysis Coal Properties and Utilization underground coal gasification pore structure evolution thermal damage multifractal analysis oxygen atmosphere CO2 atmosphere porosity pore size distribution kaolinite quartz mineral transformation multifractal spectrum coal seam gasification Inner Mongolia
Accesso online:	https://doi.org/10.3390/fractalfract10090638
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