Research Article
Failure Mechanism of a Coal-Rock Combined Body with Inclinations of Structural Planes and a Calculation Model for Impact Energy
Table 8
Cumulative AE energy before failure of CR combined specimens.
| Serial number of specimens | Predicted cumulative AE energy before impact-induced failure (ms·mV) | Measured cumulative AE energy before impact-induced failure (ms·mV) | Relative error |
| CR-0-1 | 8677 | 8875 | 2.3 | CR-0-2 | 9444 | 9036 | −4.3 | CR-0-3 | 11181 | 10936 | −2.2 | Mean | 9735 | 9616 | |
| CR-15-1 | 6324 | 5846 | −7.6 | CR-15-2 | 7917 | 7425 | −6.2 | CR-15-3 | 6348 | 6532 | 2.9 | Mean | 6840 | 6601 | |
| CR-30-1 | 3730 | 3801 | 1.9 | CR-30-2 | 5003 | 4832 | −3.4 | CR-30-3 | 4106 | 4026 | −1.9 | Mean | 4261 | 4220 | |
| CR-45-1 | 2980 | 2871 | −3.7 | CR-45-2 | 3723 | 3611 | −3 | CR-45-3 | 3183 | 3425 | 7.6 | Mean | 3287 | 3302 | |
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