Research Article
Laboratory Studies of Electric Current Generated during Fracture of Coal and Rock in Rock Burst Coal Mine
Table 1
Value of
during quick rising of electric current and the correlation coefficient
of coal sample.
| | Sample number | Time (s) | (MPa) | (MPa) | Proportionality coefficient | Correlation coefficient |
| | Coal sample number 1 | 108.0 | 17.1 | 18.1 | 0.94 | 0.88 | | Coal sample number 2 | 130.6 | 15.2 | 19.0 | 0.80 | 0.96 | | Coal sample number 3 | 116.9 | 6.8 | 17.9 | 0.75 | 0.87 |
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