Research Article
Study on Electric-Magnetic-Acoustic Signal Regularity and Its Correlation during Rock Shear Failure
Table 1
Statistics on correlation coefficient values between two indexes of electric-magnetic signals as well as stress and AE energy.
| | Sample number | Channel number | Correlation coefficients between two indexes | | Electric-stress | Electric-AE | EMR-stress | EMR-AE |
| | 1 | Ch2 | 0.345 | 0.357 | — | — | | Ch8 | −0.785 | −0.535 | — | — | | Ch9 | 0.550 | 0.570 | — | — | | Ch5 | — | — | 0.711 | 0.506 | | Ch7 | — | — | 0.301 | 0.540 | | Ch8 | — | — | 0.679 | 0.481 |
| | 2 | Ch2 | −0.855 | −0.406 | — | — | | Ch8 | −0.601 | −0.193 | — | — | | Ch9 | 0.137 | 0.386 | — | — | | Ch5 | — | — | 0.925 | 0.452 | | Ch7 | — | — | 0.867 | 0.421 | | Ch8 | — | — | 0.772 | 0.411 |
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