Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Maximum longitudinal deformations at the tunnel face by 3D numerical modelling and CCM for different geological conditions.
| GSI | σ0/MPa | Maximum longitudinal deformation/mm | Comparison/% | |
|---|---|---|---|---|
| 3D numerical modelling | CCM | |||
| 50 | 5 | 1.27 | 1.23 | 3.58 |
| 50 | 15 | 3.90 | 3.83 | 1.84 |
| 50 | 25 | 6.60 | 6.58 | 0.32 |
| 25 | 5 | 9.65 | 11.79 | − 18.17 |
| 25 | 25 | 157.74 | 286.05 | − 44.86 |
