Research Article
Strength and Failure Characteristics of Natural and Water-Saturated Coal Specimens under Static and Dynamic Loads
Table 1
Natural and saturated specimen parameters under uniaxial static compressive tests.
| Specimen number | Saturated status | Diameter/ mm | Length/ mm | Density/gcm−3 | Strength/MPa | Failure strain/% | Elastic modulus/GPa | Dry | Wet | Tested | Average | Tested | Average | Tested | Average |
| A1 | Natural Natural Natural | 4.97 | 2.86 | 1.41 | / | 43.11 | 42.71 | 28.57 | 25.64 | 2.62 | 2.65 | A2 | 4.98 | 2.95 | 1.39 | / | 42.95 | | 22.79 | | 2.74 | | A3 | 3.98 | 3.02 | 1.41 | / | 42.07 | 25.57 | | 2.59 | | A4 | 7D water 7D water 7D water | 4.97 | 3.00 | 1.41 | 1.47 | 25.30 | 22.17 | 20.53 | 23.01 | 1.28 | 1.77 | A5 | 4.98 | 3.05 | 1.38 | 1.46 | 20.81 | | 32.71 | | 2.11 | | A6 | 4.98 | 3.01 | 1.37 | 1.45 | 20.40 | 15.78 | | 1.92 | |
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