Research Article
Disaster Risk Evaluation of Superlong Highways Tunnel Based on the Cloud and AHP Model
Table 3
Classification of a quantitative risk indicator.
| Number | Quantitative indicator | Classification | Low risk | Moderate risk | High risk | Extreme risk |
| C16 C36 | Shape of tunnel section/m2 | 0∼<10 | 10∼<50 | 50∼<100 | ≥100 | C17 | Reserved deformation/mm | ≥120 | 80∼<120 | 50∼<80 | 30∼<50 | C25 | Length of single excavation/m | 0∼<1 | 1∼<2 | 2∼<3 | ≥3 | C27 | Depth of tunnel burial/m | 0∼<50 | 50∼<500 | 500∼<1000 | ≥1000 | C35 | Depth of tunnel burial/m | ≥500 | 100∼<500 | 20∼<100 | 0∼<20 |
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