Vertical Load and Settlement at the Foot of Steel Rib with the Support of Feet-Lock Pipe in Soft Ground Tunnel

Table 1

Physical and mechanics parameters of the soil.

Items	Soil grade
	VI	V
Density (kg/m^3)	1960	1930
Water content (%)	26.9	27.2
Young’s modulus (MPa)	6.79	10.81
Cohesion (kPa)	14.2	16.9
Friction angle (°)	27.6	26.2
Poisson’s ratio	0.3	0.3