Grouting Mechanism of Cement-Based Slurry in a Concentric Annulus under High Groundwater Pressure

Table 2

The numerical parameters used in the finite element models.

Parameters	Flow rate control injection mode	Pressure control injection mode
Slurry selected	CSG	CG
Radius of the outer cylinder, Ro	0.10 m	0.10 m
Radius of the inner cylinder, Ri	0.07 m	0.07 m
Pressure applied at the bottom boundary, p	—	10 kPa
Flow velocity applied at the bottom boundary,	0.156 m/s	—
Initial groundwater pressure, pw	5.0 MPa	5.0 MPa
Total injection time, T	60 s	60 s
Slurry viscosity function of penetration length,		0.04 Pa·s