Research Article
Ground Settlements due to Construction of Triplet Tunnels with Different Construction Arrangements
Table 5
Maximum settlements resulting from different twin arrangements.
| Twin tunnels arrangement | Maximum settlement (mm) |
| Horizontal | −88.83 | Vertical (top constructed first) | −77.03 | Vertical (bottom constructed first) | −81.46 | Skewed (top constructed first) | −81.27 | Skewed (bottom constructed first) | −82.40 |
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