Research Article
Permeability Characteristic and Failure Behavior of Filled Cracked Rock in the Triaxial Seepage Experiment
Table 2
Seepage test results of cracked sandstone filled with cement mortar.
| | Conditions and results | 2-1 | 2-2 | 2-3 | 2-4 | 2-5 | 2-6 |
| | Sample size (mm) | | D | 48.57 | 48.13 | 48.31 | 48.25 | 48.26 | 48.29 | | H | 98.64 | 98.41 | 99.21 | 98.80 | 98.17 | 99.02 | | Crack length (%) | 25 | 25 | 50 | 50 | 75 | 75 | | Density ρ (g cm−3) | 2.34 | 2.32 | 2.31 | 2.32 | 2.30 | 2.31 | | Elastic modulus E (GPa) | 6.94 | 8.39 | 6.09 | 8.92 | 6.53 | 9.02 | | Confining pressure σ3 (MPa) | 10.00 | 20.00 | 10.00 | 20.00 | 10.00 | 20.00 | | Pore pressure (top) (MPa) | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | 7.00 | | Pore pressure (bottom) (MPa) | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | 1.00 | | Osmotic pressure difference (MPa) | 5.38∼5.93 | 5.87∼5.93 | 5.76∼5.83 | 5.80∼5.92 | 5.76∼5.87 | 5.93∼6.05 | | Peak stress σ1t (MPa) | 43.99 | 71.19 | 40.01 | 70.62 | 32.80 | 64.88 | | Peak strain | 0.0081 | 0.0098 | 0.0067 | 0.0090 | 0.0054 | 0.0097 | | Permeability (Darzy) | 7.94∼8.67 | 3.51∼3.64 | 8.35∼9.84 | 4.72∼4.90 | 11.62∼11.85 | 5.85∼6.06 |
|
|
