Research Article
Variation in the Permeability of Intact and Fractured Rocks due to Transient Disturbances in Axial Stress or Pore Pressure
Table 3
Physical properties of the rock samples shown as the average value (number of specimens) ± standard deviation.
| | Properties | Kushiro Cretaceous sandstone | Shikotsu welded tuff | | Dry | Saturated | Dry | Saturated |
| | Porosity (%) | 10.53 (9) ± 2.43 | 31.65 (18) ± 1.65 | | Density (g/cm3) | 2.37 (9) ± 0.02 | 2.48 (9) ± 0.02 | 1.30 (18) ± 0.01 | 1.62 (18) ± 0.02 | | VP (km/s) | 3.35 (9) ± 0.14 | 3.04 (9) ± 0.16 | 2.14 (18) ± 0.07 | 1.92 (18) ± 0.14 |
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