Research Article
The Stability Evaluation of Shaft during Drastic Drawdown Dewatering of Alluvium
Table 3
The load level of the calculation scheme.
| | Load level | Depth of water table (m) | Water level difference (m) | Days (d) | Water level change rate (m·d−1) | Cumulative time (d) |
| | 1 | 76.1 | 0 | 0 | 0 | 0 | | 2 | 81.1 | −5 | 1 | −5.00 | 1 | | 3 | 111.1 | −30 | 6 | −5.00 | 7 | | 4 | 144.1 | −33 | 8 | −4.13 | 15 | | 5 | 190.1 | −46 | 15 | −3.07 | 30 | | 6 | 191.1 | −1 | 60 | −0.02 | 90 | | 7 | 192.1 | −1 | 90 | −0.01 | 180 | | 8 | 193.1 | −1 | 90 | −0.01 | 270 | | 9 | 194.1 | −1 | 95 | −0.01 | 365 |
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