Research Article
Research on Surface Subsidence of Long-Span Underground Tunnel
Table 4
Settlement changes of the surface subsidence monitoring point of Wannianquan Road Station in different stages.
| | Stages of change | Cumulative settlement value (mm) | Cumulative change (mm) | Proportion of total settlement (%) |
| | First stage | −5 | 0～5 | 25 | | Second stage | −5～−10 | 0～5 | 20 | | Third stage | −5～−6 | 0～0 | 20 | | Fourth stage | −5～−10 | 0～8 | 35 |
|
|
