[Retracted] Three-Dimensional Numerical Simulation of Soil Deformation during Shield Tunnel Construction

Table 1

HS model parameters.

The parameter types	The serial number	Symbol	Name
Strength parameters	1		Effective cohesion
	2		Effective internal friction angle
	3		The dilatancy angle
The stiffness parameters	4		Three weeks drainage test reference secant stiffness
	5		Reference tangent stiffness of consolidation test
	6		Unloading and reloading reference secant stiffness
	7		Power index of stiffness stress level correlation
Advanced parameters	8		Reference stress
	9		Unload and reload Poisson's ratio
	10		Lateral pressure coefficient under normal consolidation condition
	11		Ratio of damage