Research Article
Effect of Filling Interval Time on Long-Term Mechanical Strength of Layered Cemented Tailing Backfill
Table 2
The uniaxial compressive strength of filling material for different layers (unit: MPa).
| Specimen
number | Peak strength/MPa | Specimen
number | Peak strength/MPa | Specimen
number | Peak strength/MPa | Specimen
number | Peak strength/MPa |
| | 70-12-1 | / | 70-24-1 | 4.73 | 70-36-1 | 3.81 | 70-48-1 | 3.96 | | 70-12-2 | 4.51 | 70-24-2 | 3.25 | 70-36-2 | 4.34 | 70-48-2 | 2.5 | | 70-12-3 | 4.34 | 70-24-3 | 4.42 | 70-36-3 | 3.93 | 70-48-3 | 3.31 | | 70-12-4 | 4.71 | 70-24-4 | 4.13 | 70-36-4 | 4.17 | 70-48-4 | 3.82 | | 70-12-5 | 3.56 | 70-24-5 | / | 70-36-5 | 2.96 | 70-48-5 | 3.82 | | 70-12-6 | / | 70-24-6 | 3.27 | 70-36-6 | 4.41 | 70-48-6 | / | | Average | 4.28 | Average | 3.95 | Average | 3.93 | Average | 3.48 | | 72-12-1 | 4.27 | 72-24-1 | 3.63 | 72-36-1 | 4.15 | 72-48-1 | 4.69 | | 72-12-2 | / | 72-24-2 | 5.02 | 72-36-2 | 3.59 | 72-48-2 | 3.06 | | 72-12-3 | 4.61 | 72-24-3 | / | 72-36-3 | 3.79 | 72-48-3 | 3.93 | | 72-12-4 | 4.06 | 72-24-4 | 4.59 | 72-36-4 | / | 72-48-4 | 5.24 | | 72-12-5 | 4.23 | 72-24-5 | / | 72-36-5 | 4.55 | 72-48-5 | 3.57 | | 72-12-6 | 4.11 | 72-24-6 | 3.68 | 72-36-6 | 4.84 | 72-48-6 | 3.82 | | Average | 4.26 | Average | 4.23 | Average | 4.18 | Average | 4.05 | | 75-12-1 | 4.39 | 75-24-1 | 5.89 | 75-36-1 | / | 75-48-1 | 4.98 | | 75-12-2 | 5.69 | 75-24-2 | 3.84 | 75-36-2 | 4.96 | 75-48-2 | 5.49 | | 75-12-3 | 5.68 | 75-24-3 | 5.73 | 75-36-3 | 5.33 | 75-48-3 | 5.71 | | 75-12-4 | 5.54 | 75-24-4 | 5.42 | 75-36-4 | 6.01 | 75-48-4 | 5.17 | | 75-12-5 | 6.29 | 75-24-5 | 6.07 | 75-36-5 | / | 75-48-5 | 5.25 | | 75-12-6 | 5.85 | 75-24-6 | 6.25 | 75-36-6 | 5.54 | 75-48-6 | 5.05 | | Average | 5.57 | Average | 5.53 | Average | 5.46 | Average | 5.28 |
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Note: “/” is the largest value of the results and the average of strength value is calculated to promote a culling process.
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