The Analysis of Time-Space Effect of Surrounding Rock Deformation of TBM Tunnels in Deep Composite Stratum with or without Support

Table 5

Mechanical properties of the different segment and similarity ratios [14].

Code	Gypsum	Water	Elasticity modulus (GPa)	Volume-weight (kN/m^3)	Compressive strength (MPa)	Similarity ratio	Similarity ratio
1074	57.5	42.5	0.70	12.12	0.73	1.096	0.970
1075	57.1	42.9	0.72	12.58	0.81	1.025	0.978