Research Article
A Coal Burst Mitigation Strategy for Tailgate during Deep Mining of Inclined Longwall Top Coal Caving Panels at Huafeng Coal Mine
Table 2
Classification of the bursting proneness of coal and rock.
| | Type | Indicator | High bursting | Medium bursting | No bursting |
| | Coal | Duration of dynamic failure, (ms) | <50 | 50–500 | >500 | | Elastic strain energy index, | >5 | 2–5 | <2 | | Bursting energy index, | >5 | 1.5–5 | <1.5 |
| | Roof rock | Bending energy index (kJ) | >120 | 10–120 | <15 |
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