Research Article
Research on In Situ Stress Distribution of the Railway Tunnels in Southwest China Based on the Complete Temperature Compensation Technology
Table 7
Calculation results of principal stress at each measuring point.
| | No. | Buried depth (m) | Maximum principal stress σ1 | Intermediate principal stress σ2 | Minimum principal stress σ3 | | Value (MPa) | Direction (°) | Angle (°) | Value (MPa) | Direction (°) | Angle (°) | Value (MPa) | Direction (°) | Angle (°) |
| | 1 | 320 | 15.77 | 325 | −16 | 9.90 | 348 | 73 | 8.20 | 237 | 6 | | 2 | 450 | 17.23 | 334 | 14 | 11.12 | 291 | 71 | 9.09 | 241 | 13 | | 3 | 120 | 6.44 | 344 | 7 | 4.32 | 73 | −10 | 4.11 | 287 | −77 | | 4 | 220 | 12.02 | 309 | 19 | 7.13 | 41 | 6 | 6.44 | 328 | −70 | | 5 | 540 | 19.74 | 347 | −9 | 13.48 | 298 | 76 | 11.22 | 255 | −10 |
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