Table 6 Comparison on the plastic zone radius (m).
From: An new elastic–plastic analytical solution of circular tunnel under non-axisymmetric conditions
Methods | Location | ||||||
|---|---|---|---|---|---|---|---|
Vault | Side wall | ||||||
M1 | M4 | M5 | M1 | M4 | M5 | ||
Deformation modulus (GPa) | 250 | 4.10 | 3.89 | 3.32 | 3.70 | 3.35 | 2.94 |
500 | 4.10 | 3.89 | 3.32 | 3.70 | 3.35 | 2.94 | |
1000 | 4.10 | 3.89 | 3.32 | 3.70 | 3.35 | 2.94 | |
6000 | 4.10 | 3.89 | 3.32 | 3.70 | 3.35 | 2.94 | |
Buried depths (m) | 30 | 2.70 | 2.50 | 2.73 | 2.90 | 2.50 | 2.75 |
100 | 3.10 | 2.89 | 2.98 | 2.90 | 2.70 | 2.93 | |
200 | 3.70 | 3.46 | 3.31 | 3.30 | 3.09 | 2.94 | |
300 | 4.10 | 3.89 | 3.32 | 3.70 | 3.35 | 2.94 | |
Lateral pressure coefficient | 1.5 | 4.10 | 3.89 | 3.32 | 3.70 | 3.35 | 2.94 |
2.0 | 4.50 | 4.09 | 3.71 | 4.10 | 3.16 | 2.92 | |
2.5 | 4.90 | 4.27 | 3.91 | 5.50 | 3.00 | 2.93 | |
3.0 | 5.30 | 4.42 | 3.91 | 7.10 | 2.85 | 2.89 | |
