Research Article
In Situ Test Study of Characteristics of Coal Mining Dynamic Load
Table 3
Statistics of mining dynamic load strain rate range of mining earthquakes.
| | Number | Monitored energy/J | Frequency/Hz | Maximum particle peak
vibration velocity/(m/s) | Strain rate/(s−1) |
| | 1 | 296 | 5~30 | 0.13~0.40 | 1.6 × 10−3~3.0 × 10−2 | | 2 | 400 | 5~30 | 0.18~0.66 | 2.3 × 10−3~5.0 × 10−2 | | 3 | 895 | 3~28 | 0.20~0.65 | 1.5 × 10−3~4.6 × 10−2 | | 4 | 1240 | 3~25 | 0.20~0.84 | 1.5 × 10−3~5.3 × 10−2 | | 5 | 8270 | 2~18 | 0.34~1.00 | 1.7 × 10−3~4.6 × 10−2 | | 6 | 22600 | 2~18 | 0.79~3.44 | 4.0 × 10−3~1.6 × 10−1 | | 7 | 27100 | 1~15 | 0.44~3.50 | 1.1 × 10−3~1.3 × 10−1 | | 8 | 50400 | 2.5~15 | 0.50~3.27 | 3.2 × 10−3~1.2 × 10−1 | | 9 | 103000 | 0.5~12 | 1.23~3.65 | 1.6 × 10−3~1.1 × 10−1 | | 10 | 3970000 | 0.4~5 | 8.45~12.27 | 8.6 × 10−3~1.6 × 10−1 |
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