Research Article
Experimental Investigation on Sandstone Permeability under Plastic Flow: Permeability Evolution Law with Stress Increment
Table 1
Mechanical parameters of sandstone samples under the confining pressure of 6.0 MPa.
| | Serial no. | Dia. (mm) | Height (mm) | Confining pressure (MPa) | Failure load (kN) | Peak strength (MPa) | Peak strain (%) | Elasticity modulus (GPa) |
| | 1 | 49.8 | 99.7 | 6 | 246.1 | 125.4 | 1.24 | 9.21 | | 2 | 50.1 | 100.2 | 6 | 244.3 | 124.5 | 1.23 | 9.08 | | 3 | 49.7 | 100.1 | 6 | 267.5 | 136.3 | 1.33 | 10.35 | | 4 | 49.6 | 99.4 | 6 | 250.8 | 127.8 | 1.25 | 9.45 | | 5 | 50.1 | 99.7 | 6 | 265.7 | 135.4 | 1.29 | 10.13 |
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