Table 11 Geo-stress inversion errors for various mechanical parameter values.
From: Study of in situ stress inversion of deeply incised valleys considering the river evolution process
Modified parameters | Value | Relative error (%) | |||||||
|---|---|---|---|---|---|---|---|---|---|
Point 1 | Point 2 | Point 3 | Point 4 | Point 5 | Point 6 | Point 7 | Mean error | ||
Bulk | 10 GPa | 26.54 | 32.01 | 51.00 | 34.16 | 47.83 | 64.77 | 30.12 | 40.92 |
20 GPa | 27.54 | 31.96 | 51.85 | 34.39 | 48.08 | 64.70 | 27.38 | 40.85 | |
30 GPa | 33.79 | 49.12 | 86.55 | 36.05 | 52.65 | 58.24 | 35.66 | 50.29 | |
Poisson | 0.2 | 26.06 | 31.96 | 49.46 | 35.11 | 49.55 | 69.89 | 24.94 | 41.00 |
0.3 | 22.70 | 22.23 | 24.64 | 19.86 | 24.08 | 27.84 | 17.10 | 22.64 | |
0.4 | 31.40 | 36.47 | 57.11 | 34.15 | 46.32 | 57.60 | 40.25 | 43.33 | |
Cohesion | 1 MPa | 29.62 | 35.40 | 23.84 | 34.09 | 47.76 | 34.12 | 30.43 | 33.61 |
3 MPa | 27.31 | 32.56 | 52.02 | 33.90 | 48.45 | 68.21 | 46.69 | 44.16 | |
5 MPa | 29.85 | 40.26 | 50.39 | 34.22 | 49.55 | 72.36 | 44.49 | 45.87 | |
Internal friction angle | 30 ° | 41.09 | 43.60 | 62.97 | 41.65 | 50.90 | 56.88 | 209.17 | 72.32 |
50 ° | 23.21 | 24.32 | 22.75 | 21.34 | 28.31 | 31.11 | 19.20 | 24.32 | |
70 ° | 33.32 | 31.59 | 51.01 | 40.38 | 76.89 | 70.98 | 46.91 | 50.16 | |
