Table 7 The maximum bottom uplift in each construction stage.
Construction stage | Bottom uplift (mm) | |
|---|---|---|
3 | Excavate the first soil layer | 4.98 |
4 | Erect the first support | 6.07 |
5 | Excavate the second soil layer | 8.41 |
6 | Erect the second support | 9.86 |
7 | Excavate the third soil layer | 12.31 |
8 | Erect the third support | 15.02 |
9 | Excavate the fourth soil layer | 20.59 |
10 | Erect the fourth support | 22.86 |
11 | Excavate the fifth soil layer | 24.32 |
