Table 3 Construction parameters of test DMP piles.
From: Innovative digital control minor-disturbance equipment for deep mixing
Items | Penetration | Repeating stirring | Withdraw | |||
|---|---|---|---|---|---|---|
Phase | 1–2 | 3–7 | 8 | 9–10 | 11–15 | 16 |
Depth range, m | 0-4.6 | 4.6–16.8 | 16.8–18.0 | 14.0–18.0 | 4.6–14.0 | 0-4.6 |
Drilling rate, m/min | 0.5 | 0.5 | 0.5 | 1.0 | 1.0 | 1.0 |
Rotating rate, r/min | 25 | 25 | 25 | 30 | 30 | 30 |
Air pressure, kPa | ≤ 300 | ≤ 300 | ≤ 300 | ≤ 300 | ≤ 300 | ≤ 300 |
Binder content, % | 13 | 15 | 13 | 13 | 15 | 13 |
Water-binder ratio | 1.5 | 1.5 | 1.5 | 1.0 | 1.0 | 1.0 |
Proportion of slurry, % | 30 | 30 | 30 | 35 | 70 | 70 |
Slurry flow rate, L/min | 27.7 | 31.9 | 27.7 | 54.3 | 108.5 | 94.1 |
