Research Article
Research on the Characteristics of Coal Bump and Monitoring and Early Warning in Hujiahe Coal Mine
Table 2
Summary of peak intensity of 3 sets of coal samples.
| Group | Paths | Peak intensity (MPa) | Average intensity (MPa) | Critical stress of coal bump (MPa) |
| | 1 | 17.26 | 15.26 | 15.7 | 1 | 2 | 13.21 | | 3 | 15.32 | | 1 | 12.45 | 14.02 | 2 | 2 | 17.39 | | 3 | 12.24 | | 1 | 19.20 | 17.77 | 3 | 2 | 15.10 | | 3 | 19.00 |
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