An Improved Numerical Model of Shield Tunnel with Double Lining and Its Applications

Table 3

Depths of slits in test models.

Bending stiffness/(N·m·rad^−1)	Equivalent slit depth in prototype/mm	Equivalent slit depth in prototype of model/mm
2.0 × 10^7 (positive bending)	240	12 (tunnel crown/tunnel bottom)
2.6 × 10^7 (negative bending)	200	10 (left/right side lumbers)