Review Article
Multiple Disturbances of Existing Tunnels Caused by Deep Excavation and New Shield Tunnel
Table 3
Change proportion of the typical section of the upline.
| Typical section segment number of the upline | Content of monitoring | Disturbance caused by excavation of foundation pit (mm) | Disturbance caused by new tunnel tunneling (mm) | Proportion of change (%) |
| S513 | Vertical displacement | −1.3 | −0.1 | −92.3 | Horizontal displacement | 1.7 | −2.4 | −241.2 | Segment convergence | 1.6 | 0.1 | −93.8 | Differential settlement of ballast bed | 0.5 | 0.8 | 60.0 |
| S520 | Vertical displacement | −0.8 | 0.8 | −200.0 | Horizontal displacement | 1.7 | −1.1 | −164.7 | Segment convergence | 1.7 | 0.7 | −58.8 | Differential settlement of ballast bed | −0.6 | 0.4 | −166.7 |
| S528 | Vertical displacement | −0.7 | 0.7 | −200.0 | Horizontal displacement | 1.7 | −1.8 | −205.9 | Segment convergence | 1.8 | 0.4 | −77.8 | Differential settlement of ballast bed | 0.0 | 0.3 | / |
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