TBM BREAKTHROUGH
Herrenknecht has reported that the contractors working on the Deep Tunnel Sewerage System (DTSS) project in Singapore have completed tunnelling works for the second construction phase using a Herrenknecht Vertical Shaft Sinking Machine (VSM).
In the second phase of the project, 18 of Herrenknecht’s Mixshields and one EPB Shield (Earth Pressure Balance Shield) with diameters between 4.50 and 7.56 metres were chosen to bore the sewage collectors and line them with segments.
Herrenknecht also supplied 12 separation plants for the Mixshield drives and provided support services throughout the entire project.
This included remote access to individual machines, enabling them to be monitored and controlled remotely.
During the project, the teams faced challenges with the grounds complex geology.