Research Article
Reasonable Treatment Range of Karst Cave Encountered by Super-Large Diameter Shield Tunnel in Strongly Karst-Developed Area
Table 6
Physical and mechanical parameters of cave filling.
| Cave filling | Internal friction angle (degree) | Cohesion (kPa) | Liquidity index | Plasticity index |
| Flow-soft plastic clay | 4.0 | 7.0 | 1.41 | 27.1 | Plastic clay | 11.0 | 43.0 | 0.45 | 25.7 | Hard plastic clay | 16.5 | 59.0 | 0.07 | 23.4 |
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