Research Article
A New Bayesian Network Model for the Risk Assessment of Water Inrush in Karst Tunnels
Table 4
Risk classification of contact zones of the groundwater table.
| Risk classification | (m) | Definition |
| I | ≥60 | High risk: high water pressure and large instantaneous water inrush quantity | II | 30~60 | Moderate risk | III | 0~30 | Low risk | IV | <0 | No risk |
|
|