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

Table 2

Mechanical parameters of rock material transparent table model.

Sequence number	Lithology	Compressive strength (MPa)	Elastic modulus E (GPa)	Poisson’s ratio	Bulk weight (10^4 N/m^3)
1	Mudstone	0.18	0.032	0.35	2.5
2	Siltstone	0.31	0.036	0.29	2.5