Research Article
Risk Assessment of an Existing Metro Tunnel in Close Proximity to New Shield Tunnels following Construction
Table 1
Four conventional scaling methods.
| | Comparison | 1–9 scaling method | 9/9–9/1 scaling method | 10/10–18/2 scaling method | Index scaling method |
| | Same | 1 | 9/9 (1.000) | 10/10 (1.000) | 90 (1.000) | | Slightly larger | 3 | 9/7 (1.286) | 12/8 (1.500) | 91/9 (1.277) | | Significantly larger | 5 | 9/5 (1.800) | 14/6 (2.333) | 93/9 (2.080) | | Strongly larger | 7 | 9/3 (3.000) | 16/4 (4.000) | 96/9 (4.237) | | Extremely larger | 9 | 9/1 (9.000) | 18/2 (9.000) | 99/9 (9.000) |
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