Pore Damage Properties and Permeability Change of Coal Caused by Freeze-Thaw Action of Liquid Nitrogen

<div>Contrast of <i>T</i><sub>2</sub> distribution curve before and after the freeze-thaw action of liquid nitrogen. (a) Water saturation 0%. (b) Water saturation 34.2%. (c) Water saturation 67.8%. (d) Water saturation 92.4%.</div>

Advances in Civil Engineering

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Figure 3

Figure 3: Pore Damage Properties and Permeability Change of Coal Caused by Freeze-Thaw Action of Liquid Nitrogen 