Computational Model of Outer Circle and Inner Ellipse Shield Tunnel Lining Structure

Table 1

Soil parameters.

Soil layer number	Soil layer	Severe (kN/m^3)	Thickness (m)	Position
1-2	Vegetative fill	15.9	1.7	Tunnel overlay
2-1-1	Loess-like soil	16.4	5.3
2-1-2	Loess	18.5	4.6
			2.5	The stratum in which the tunnel is located
2-2	Ancient soil	19.4	3.5