Research Article
Ground Settlements due to Construction of Triplet Tunnels with Different Construction Arrangements
Figure 6
(a) Twin tunnels (u = 0.55D) in vertical configuration (dimensions in cm). (b) Settlement trough of vertical twin tunnels (u = 0.55D). (c) Displacement contours of vertical twin tunnels (top constructed first). (d) Displacement contours of vertical twin tunnels (bottom constructed first).
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