Research Article
Grouting Mechanism of Cement-Based Slurry in a Concentric Annulus under High Groundwater Pressure
Table 1
Parameters adopted for the generation of the calculation and numerical simulation.
| Parameters | Flow rate control injection mode | Pressure control injection mode | CSG | CG | CSG | CG |
| Radius of the outer cylinder, Ro | 0.10 m | 0.10 m | 0.10 m | 0.10 m | Radius of the inner cylinder, Ri | 0.07 m | 0.07 m | 0. 07 m | 0.07 m | Grouting overpressure, p | — | — | 10 kPa | 10 kPa | Grouting rate, q | 0.00125 m3/s | 0.00125 m3/s | — | — | Initial groundwater pressure, pw | 5 MPa | 5 MPa | 5 MPa | 5 MPa | Total injection time, T | 60 s | 60 s | 60 s | 60 s | Slurry viscosity function of chemical reaction time, | = 0.003182 t2.23 + 0.04 Pa·s | 0.04 Pa·s | = 0.003182 t2.23 + 0.04 Pa·s | 0.04 Pa·s | Time step | 0.05 s | 0.05 s | 0.05 s | 0.05 s |
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