Research Article
Wedge Instability Model Improvement of Shield Tunnel Excavation Face under Inclined Surface
Figure 7
The relationship between active pressure and surface inclination angle under different internal friction angles: (a) the unit weight of soil γ = 15 kN/m3 (c = 35 kPa), (b) the unit weight of soil γ = 20 kN/m3 (c = 35 kPa), and (c) the unit weight of soil γ = 25 kN/m3 (c = 35 kPa).
| (a) |
| (b) |
| (c) |