Research Article
Stability Analysis of Surrounding Rock of Large Section Ultradeep Shaft Wall
Table 1
Each measuring point’s magnitude and direction of the principal stress in JCK-1 borehole [
8].
| Measuring point depth (m) | Vertical principal stress σv (MPa) | Self-weight stress σ (MPa) | Maximum horizontal principal stress σH (MPa) | Minimum horizontal principal stress σh (MPa) | Horizontal maximum principal stress direction θ |
| −950 | 26.41 | 26.46 | 32.78 | 14.52 | N103°34′E | −1050 | 29.22 | 29.16 | 41.83 | 17.18 | N103°42′E | −1150 | 33.33 | 31.86 | 35.37 | 16.64 | N95°43′E | −1250 | 34.25 | 34.56 | 38.95 | 16.85 | N110°13′E | −1350 | 35.98 | 37.26 | 41.23 | 16.44 | N105°26′E | −1450 | 40.01 | 39.96 | 40.63 | 14.02 | N111°20′E |
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