Research Article
Study of Acoustic Emission and Mechanical Characteristics of Coal Samples under Different Loading Rates
Table 1
Mechanical parameters of coal samples.
|
Serial number |
Loading rate/mm·s−1 | Peak stress/MPa | Peak strain/10−3 | Elastic modulus/GPa | Experiment value | Average value | Experiment value | Average value | Experiment value | Average value |
| M1 | 0.001 | 20.750 |
22.67 | 5.368 |
6.191 | 4.094 |
4.281 | M2 | 0.001 | 23.400 | 6.878 | 4.574 | M3 | 0.001 | 22.650 | 6.328 | 4.175 |
| M4 | 0.002 | 25.244 |
24.99 | 9.035 |
7.411 | 3.923 |
4.21 | M5 | 0.002 | 25.990 | 7.978 | 4.373 | M6 | 0.002 | 23.740 | 5.219 | 4.334 |
| M7 | 0.005 | 27.578 |
28.01 | 7.309 |
8.203 | 4.030 |
4.196 | M8 | 0.005 | 26.910 | 7.382 | 4.145 | M9 | 0.005 | 29.530 | 9.919 | 4.414 |
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