nper | Cumulative settlement (mm) | The BP neural network | Residual (mm) | Relative difference (%) |
9 | 7.95 | 8.0377 | 0.0877 | 1.10 |
10 | 8.80 | 8.8932 | 0.0932 | 1.06 |
11 | 9.47 | 9.5748 | 0.1048 | 1.11 |
12 | 10.45 | 10.5532 | 0.1037 | 0.97 |
13 | 11.44 | 11.5436 | 0.1036 | 0.91 |
14 | 12.49 | 12.6477 | 0.1577 | 1.26 |
15 | 13.66 | 13.8313 | 0.1713 | 1.25 |
16 | 14.16 | 14.4136 | 0.2536 | 1.79 |
17 | 14.46 | 14.7343 | 0.2743 | 1.90 |
18 | 14.66 | 14.9417 | 0.2817 | 1.92 |