Research Article
Geological Core Ground Reorientation Technology Application on In Situ Stress Measurement of an Over-Kilometer-Deep Shaft
Table 2
Magnitude and direction of principal stress.
| | Measuring point depth (m) | Vertical principal stress σ (MPa) | Gravitational stress σG (MPa) | Horizontal maximum principal stress σH (MPa) | Horizontal minimum principal stress σh (MPa) | Horizontal maximum principal stress azimuth β (°) |
| | 200 | 5.10 | 5.50 | 19.75 | 3.62 | 17.66 | | 400 | 12.35 | 11.00 | 20.85 | 11.13 | 17.01 | | 600 | 16.58 | 16.50 | 22.53 | 5.49 | -3.40 | | 800 | 19.91 | 22.00 | 24.04 | 8.75 | 14.70 | | 900 | 23.75 | 24.75 | 25.38 | 10.90 | 13.07 | | 1000 | 25.69 | 27.50 | 26.22 | 13.31 | -4.98 |
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