Research Article
Characterization of Coal Porosity for Naturally Tectonically Stressed Coals in Huaibei Coal Field, China
Table 2
DFT cumulative specific surface area, cumulative pore volume, and pore average width by N2 isotherm for deformed coal samples.
| Deformation series | Sample ID | Deformation degrees | Specific surface area/m2·g−1 | Cumulative pore volume/cm3·g−1 | Average width/nm |
| Brittle deformation | Y04 | Weak | 1.5815 | 5.5416 | 16.3869 | L10 | Weak | 1.1240 | 4.7415 | 16.2702 | L01 | Weak | 1.1800 | 6.3164 | 20.5245 | H12 | Strong | 2.5297 | 9.5317 | 11.9679 | T02 | Strong | 2.3491 | 9.0517 | 12.6179 | Z02 | Weak | 1.6465 | 5.1731 | 12.5544 |
| Ductile deformation | L04 | Weak | 4.0009 | 10.943 | 7.87924 | K04 | Weak | 4.1434 | 12.183 | 7.79493 | H02 | Strong | 2.3708 | 9.2548 | 13.4231 | H09 | Strong | 2.6091 | 9.5586 | 12.1140 | H03 | Strong | 2.7430 | 11.574 | 15.2008 | T05 | Strong | 2.7171 | 10.050 | 12.0523 |
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