Research Article
Mechanism of Vibration Energy Action on Dynamic Instability of Shock-Type Rockburst Carrier System
Table 1
Calculation process and results.
| No. | Mine name | Dongtan Coal Mine | Hongyang No.3 Coal Mine | Zhaolou Coal Mine |
| 1 | Rockburst time | 20 : 26 : 03, February 26, 2015 | 2 : 26 : 39, November 11, 2017 | 2 : 49 : 33, July 29, 2015 | 2 | Rockburst position | Working face 43Upper13 | Working face 702 | Working face1305 | 3 | Site conditions | Coal spalling occurred in the 300–161 mm of tailentry in the working face | 218.3 m in front of the coal wall of the roadway in the working face was full of coal and rock | The range of 45 m along the two sides of tailentry was moved to 3 m, and the floor heave within 40 m was between 0.5 and 1m | 4 | Static load energy of rockburst behavior area/J | 1.22 × 107 | 4.21 × 107 | 7.96 × 107 | 5 | Magnitude of mining earthquake | 2.02 | 2.4 | 2.3 | 6 | Mine earthquake energy/J | 2.20 × 106 | 2.61 × 106 | 2.51 × 106 | 7 | Distance between earthquake source and rockburst source/m | 90.15 | 55.72 | 76.43 | 8 | Seismic energy attenuation index η | −0.01 | −0.01 | −0.01 | 9 | Energy of rockburst source under mine earthquake action/J | 8.93 × 105 | 1.50 × 106 | 1.17 × 106 | 10 | α = UDZ/UJZ | 0.0734 | 0.0356 | 0.0597 |
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