Research Article
Energy Evolution and AE Failure Precursory Characteristics of Rocks with Different Rockburst Proneness
Table 1
Rockburst prediction results based on multiple criteria.
| Lithology | Depth (m) | Maximum elastic strain energy density | Brittleness index | Rockburst proneness index | Es | Level | B | Level | Wet | Level |
| Metagabbro | 761 | 172.9 | III | 14.9 | III | 3.76 | III | Metagabbro | 965 | 145.5 | III | 14.7 | III | 3.47 | II | Metagabbro | 1090 | 146.8 | III | 13.4 | III | 3.82 | III | Granite | 1415 | 247.0 | IV | 16.77 | III | 7.98 | IV | Granite | 1524 | 321.0 | IV | 19.5 | IV | 6.32 | IV | Granite | 1526 | 410.59 | IV | 21 | IV | 5.16 | IV |
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II: weak rockburst proneness; III: moderate rockburst proneness; IV: strong rockburst proneness.
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