Research Article
In Situ Test Study of Characteristics of Coal Mining Dynamic Load
Table 2
Range of rock burst induced dynamic load strain rate.
| | Shockwave form | Frequency (Hz) | Maximum particle peak
vibration velocity (m/s) | Velocity of shockwave (m/s) | Strain rate (s−1) |
| | Longitudinal wave | 2~15 | 0.52~4.38 | 4300 | 1.5 10−3~9.6 10−2 | | Shear wave | 2~15 | 0.52~4.38 | 2480 | 2.6 10−3~1.7 10−1 |
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