A Numerical Investigation of the Deformation Mechanism of a Large Metro Station Foundation Pit under the Influence of Hydromechanical Processes

Table 1

Model material parameters.

Number	Stratum	Stratum thickness (m)	Cohesion (kPa)	Internal friction angle (°)	Elastic modulus (MPa)	Poisson’s ratio
1	Plain fill	3	10	20	10.5	0.30
2	Silty clay	4.5	30.3	15.2	20	0.35
3	Strongly weathered granite	6	0	45	50	0.30
4	Moderately weathered granite	12	1400	55	10,000	0.25
5	Slightly weathered granite	74.5	6500	65	25,000	0.15