The Influence of Complex Subway Station Construction on High Retaining Walls and Appropriate Countermeasures

Table 1

Physical and mechanical parameters of the strata.

Layers	Thickness (m)	Unit weight (kN/m^3)	Cohesive force (kPa)	Internal friction angle (°)	Poisson’s ratio	Modulus of elasticity (MPa)
Retaining wall fill	3.0	17.0	5	10	0.35	5
Miscellaneous fill	3.0	17.0	5	10	0.35	5
Silt	4.2	19.3	18	25.7	0.30	8
Silty clay	6.8	19.7	28	16	0.30	12
Silty clay and clay	4.8	19.7	32	17	0.30	14
Silty-fine sand	8.2	20.2	15	40	0.25	75
Pebble	33.0	21.2	0	45	0.20	120
Grouting reinforced body	—	22	40	18	0.25	50