Research Article
Displacement Characteristics of an Urban Tunnel in Silty Soil by the Shallow Tunnelling Method
Figure 1
On-site photos of surface collapse and surface cracking. (a) Shanghai metro line 4, (b) Nanjing metro, (c) Guangzhou metro line 5, (d) Hangzhou metro line 1 [29].
(a) |
(b) |
(c) |
(d) |