Research Article
Estimation of Rock Burst Grades Using Rock Mass Strength
Table 8
Rock burst estimation criterion based on the ratio of σcm to σc.
| Estimation index | Slight rock burst | Medium rock burst | Strong rock burst | Violent rock burst |
| | >0.167 | 0.066∼0.167 | 0.012∼0.066 | ≤0.012 |
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