In Singapore two cable tunnels had to be built crossing under a bay. The route is characterized by a simultenously vertical and horizontal curve (space curve). The use of soil conditioning agents permitted a secure advance through limestone, loam, fine sand and silt. To counteract the heavy wear on the discs in the heterogeneous geology, additional wear plates were welded onto the cutterhead.
|
Country, Location |
Singapore, Singapore |
|
Year |
2007 |
|
Application |
Electricity |
|
Geology |
Limestone, loam, fine sand, silt |
|
Tunnelling length
|
645 m |
|
Machine Data
|
1x EPB Shield: |