Research Article
Structural Safety Assessment of Existing Multiarch Tunnel: A Case Study
Table 2
Spatial distribution statistics of cracks with different extension directions.
| | Type of crack | Proportion of total cracks (%) | Crack location | Proportion of cracks (%) |
| | Annular crack | 55.3 | Vault | 21.8 | | Hance | 37.6 | | Side wall | 40.6 |
| | Longitudinal crack | 35.9 | Vault | 69.4 | | Hance | 19.8 | | Side wall | 10.8 |
| | Inclined crack | 8.8 | |
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