Pore and Fracture Features Based on CT Scanning
A Case Study from The Pingdingshan Coalfield
DOI:
https://doi.org/10.54097/mwp1ts12Abstract
To precisely characterize the pore-fracture architecture of Permian coal samples from Pingdingshan Mine Area 10, X-ray computed tomography (CT) technology was employed for systematic investigation. A dual-method analytical framework integrating qualitative assessment and quantitative metrics was implemented to evaluate pore size distribution, porosity, and connectivity. Three-dimensional CT reconstruction revealed stratified propagation patterns of pore-fracture systems, with mineral components exhibiting pronounced stratification characteristics. Quantitative analysis of pore-throat configurations within the pore network model demonstrated descending orders of average pore radius and throat radius across specimens: SK42 > SS21 > SK21. While SS21 exhibited the broadest throat radius distribution, SK42 displayed the largest mean throat radius with limited developmental frequency. Connectivity coefficients for SS21, SK21, and SK42 measured 0.1266, 0.1061, and 0.023 respectively, indicating superior interconnectivity and structural integrity in SS21 compared to other specimens.
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