Table 6 Vertical deformation of twin tunnels.

From: Creep characteristics of muddy siltstone and its engineering application on cross-river tunnel stability

Position

Initial value/mm

Final value/mm

Deformation/mm

Arch crown of left tunnel

-1.87

-4.51

2.64

Arch crown of right tunnel

-2.86

-6.23

3.37

Inverted arch of left tunnel

3.66

2.31

1.35

Inverted arch of right tunnel

4.22

2.97

1.23

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