Research Article
Study on Large Deformation Prediction and Control Technology of Carbonaceous Slate Tunnel in Lixiang Railway
Table 4
Later prediction results.
| Monitoring cycle (d) | Peripheral convergence (mm) | BP neural network model | GA-BP neural network model | Estimate (mm) | Relative error (%) | Estimate (mm) | Relative error (%) |
| 41 | 718.2 | 732.4 | 1.97 | 724.1 | 0.81 | 42 | 720.6 | 735.9 | 2.12 | 727.3 | 0.93 | 43 | 721.4 | 737.8 | 2.27 | 728.9 | 1.03 | 44 | 722.5 | 738.9 | 2.27 | 730.4 | 1.09 | 45 | 723.7 | 740.1 | 2.27 | 730.8 | 0.98 | Average relative error | | 2.18 | | 0.97 |
|
|