Research Article
Strength and Failure Characteristics of Natural and Water-Saturated Coal Specimens under Static and Dynamic Loads
Table 3
Natural and water saturated specimen parameters under triaxial static compressive tests.
| Specimen number | Saturated status | Diameter/mm | Length/mm | Density gcm−3 | Confining pressure /MPa | Strength/MPa | Failure strain/% | Elastic modulus/GPa | Dry | Wet | Tested | Average | Tested | Average | Tested | Average |
| C1 | Natural | 4.98 | 3.01 | 1.36 | / | 2.0 | 76.39 | 80.42 | 2.26 | 2.45 | 3.22 | 3.34 | C2 | Natural | 4.98 | 2.98 | 1.43 | / | 4.0 | 83.83 | | 2.51 | | 3.55 | | C3 | Natural | 4.98 | 2.94 | 1.36 | / | 6.0 | 78.09 | | 2.44 | | 3.21 | | C4 | Natural | 4.99 | 3.02 | 1.41 | / | 8.0 | 79.39 | | 2.49 | | 3.25 | | C5 | Natural | 4.99 | 3.18 | 1.40 | / | 10.0 | 84.41 | | 2.57 | | 3.54 | | C6 | 7D water | 4.98 | 2.98 | 1.43 | 1.51 | 2.0 | 69.35 | 65.54 | 3.22 | 2.84 | 2.18 | 2.47 | C7 | 7D water | 4.98 | 3.11 | 1.41 | 1.48 | 4.0 | 77.54 | | 3.29 | | 2.54 | | C8 | 7D water | 4.98 | 2.93 | 1.38 | 1.45 | 6.0 | 56.19 | | 2.37 | | 2.61 | | C9 | 7D water | 4.99 | 2.96 | 1.35 | 1.42 | 8.0 | 49.39 | | 2.96 | | 1.78 | | C10 | 7D water | 4.98 | 3.00 | 1.38 | 1.46 | 10.0 | 75.21 | | 2.37 | | 3.22 | |
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