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Table 1
Parameters for polyurethane grouting process.
| Parameters | Notations | Units | Values |
|---|---|---|---|
| Borehole radius | a | (m) | 0.008 |
| Aperture half-thickness | H | (m) | 0.003 |
| Entry flow rate | Qa | (lt/min) | 4.4 |
| ρc | (kg/m3) | 1042 | |
| Coefficients of density | tc | (s) | 18 |
| ρf | (kg/m3) | 111 | |
| A1 | (Pa · s) | 2.17 × 10−4 | |
| Coefficients of viscosity model | t1 | (s) | 100 |
| µ0 | (Pa · s) | 1.7 |
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