Research Article
Reasonable Treatment Range of Karst Cave Encountered by Super-Large Diameter Shield Tunnel in Strongly Karst-Developed Area
Table 8
Critical safe distance of numerical simulation.
| | Location of karst cave | Diameter of caves (m) | Critical safe distance (m) |
| | Upper part of tunnel | 3.0 | 1.0 | | 4.5 | 1.0 | | 6.0 | 1.5 | | 7.5 | 2.0 | | 9.0 | 2.5 |
| | Lateral part of tunnel | 3.0 | 2.0 | | 4.5 | 2.0 | | 6.0 | 2.5 | | 7.5 | 3.5 | | 9.0 | 4.0 |
| | Lower part of tunnel | 3.0 | 2.0 | | 4.5 | 2.5 | | 6.0 | 3.0 | | 7.5 | 4.5 | | 9.0 | 6.0 |
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