Table 1 Test results of uniaxial compression test.
From: Softening and instability evolution of strip coal pillar under water immersion in goaf
Soaking time /d | Coal sample size /mm | Mean failure load /KN | Average compressive strength /MPa | MoistureContent /% |
|---|---|---|---|---|
0 | 50.1 × 49.6 × 98.7 | 9.72 | 4.042 | 0 |
5 | 49.8 × 49.6 × 99.2 | 8.58 | 3.551 | 6.38 |
10 | 49.7 × 49.5 × 98.7 | 7.46 | 3.075 | 7.75 |
15 | 48.9 × 49.5 × 97.6 | 6.49 | 2.658 | 8.51 |
20 | 49.3 × 48.7 × 98.7 | 5.77 | 2.383 | 9.05 |
25 | 49.5 × 49.2 × 98.5 | 5.02 | 2.087 | 9.46 |
30 | 49.2 × 48.9 × 97.3 | 5.05 | 2.023 | 9.79 |
35 | 48.7 × 49.7 × 97.3 | 5.02 | 2.017 | 10.07 |
40 | 48.9 × 49.5 × 98.3 | 5.01 | 2.015 | 10.31 |
