Research Article
Complex Analytical Study of the Stability of Tunnel-Surrounding Rock in a Layered Jointed Rock Mass
Table 2
Error analysis of the sampling points.
| Tunnel | Objective function value (m2) | Average absolute error (m) | Maximum absolute error (m) | Average relative error (%) | Maximum relative error (%) | Total length of real tunnel boundary (m) | Mapping accuracy (%) | Mapping accuracy (%) |
| a | 0.00662 | 0.0151 | 0.0459 | 0.39 | 1.11 | 26.1724 | 0.06 | 44.12 | b | 0.01085 | 0.0200 | 0.0501 | 0.48 | 1.15 | 29.1912 | 0.07 | 42.96 | c | 0.01526 | 0.0222 | 0.0685 | 0.44 | 1.17 | 32.8441 | 0.07 | 45.94 | d | 0.01391 | 0.0220 | 0.0637 | 0.44 | 1.11 | 32.9070 | 0.07 | 44.12 | e | 0.01490 | 0.0243 | 0.0589 | 0.38 | 0.82 | 42.0192 | 0.06 | 41.22 |
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