Research Article
Numerical Investigation of the Influence of Roof Fracturing Angle on the Stability of Gob-Side Entry Subjected to Dynamic Loading
Table 6
Statistics of the dynamic loading induced by mine seismicity.
| | Case no. | Frequency (Hz) | Peak velocity (m/s) | Energy (J) | Strain rate (s−1) |
| | 1 | 2.5∼15 | 0.50∼3.27 | 50400 | 3.2 × 10 − 3∼1.2 × 10−1 | | 2 | 2∼18 | 0.79∼3.44 | 22600 | 4.0 × 10 − 3∼1.6 × 10−1 | | 3 | 2∼18 | 0.34∼1.00 | 8270 | 1.7 × 10 − 3∼4.6 × 10−2 | | 4 | 3∼25 | 0.20∼0.84 | 1240 | 1.5 × 10 − 3∼5.3 × 10−2 | | 5 | 3∼28 | 0.20∼0.65 | 895 | 1.5 × 10 − 3∼4.6 × 10−2 | | 6 | 5∼30 | 0.18∼0.66 | 400 | 2.3 × 10 − 3∼5.0 × 10−2 |
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