Effects of Pit-Bottom-Soil Reinforcement on the Deformation of Subway Deep Foundation Pits Based on an Improved Model

Table 4

Mechanical parameters of the soil layer.

Name of the soil layer	Thickness (m)	γ (kN•m^−3)	C (kPa)	Φ (°)	E (MPa)
Miscellaneous fill	3.5	18	6	12	6.5	0.2
Muddy soil	2.5	16.5	10.3	7.7	8.9	0.46
Silt and sand	14.6	15.9	11.9	9.8	25.9	0.43
Silt and sand	7.4	16.0	13	10.5	12.4	0.39
Silty clay	2.6	19.7	30.4	17.4	40	0.31
Coarse medium sand	4.9	18.5	3	30	70	0.31
Composite soil	3	18	133	15	93	0.4