Table 6 Permeability test scheme of argillaceous siltstone.
Specimen number | Diameter/mm | Height/mm | Axial force/KN | Confining pressure/MPa | 0–4 h | 4–8 h | 8–12 h |
|---|---|---|---|---|---|---|---|
Osmotic pressure/MPa | Osmotic pressure/MPa | Osmotic pressure/MPa | |||||
SI | 49.85 | 99.88 | 0.3 | 18 | 2 | 2 | 2 |
SII | 49.27 | 99.46 | 0.3 | 18 | 2 | 4 | 4 |
SIII | 49.36 | 103.73 | 0.3 | 18 | 2 | 4 | 6 |