Research Article
Rockburst Characteristics and Mechanisms during Steeply Inclined Thin Veins Mining: A Case Study in Zhazixi Antimony Mine, China
Table 1
Measurement results of principal stress at four points of Zhazixi Antimony Mine.
| | No. | Level (m) | The major principal stress (σH) | The intermediate principal stress (σv) | The minor principal stress (σh) | | Value (MPa) | Orientation (°) | Dip (°) | Value (MPa) | Orientation (°) | Dip (°) | Value (MPa) | Orientation (°) | Dip (°) |
| | 1 | −115 | 16.36 | 257.31 | 3.25 | 8.00 | 346.49 | 165.94 | 7.36 | 180.03 | 104.44 | | 2 | −160 | 19.61 | 246.51 | 166.95 | 9.86 | 321.36 | 48.61 | 9.27 | 167.19 | 38.64 | | 3 | −160 | 18.76 | 260.83 | 165.27 | 12.79 | 306.92 | 69.24 | 10.43 | 174.67 | 14.30 | | 4 | −205 | 21.32 | 80.45 | 112.16 | 14.07 | 130.28 | 59.47 | 11.92 | 149.28 | 21.85 |
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