Singapore Downtown Line 2: TBM launch with IRIS.tunnel
The first TBM drive of Contract C916 (Beauty World Station and Tunnels) has been launched. The tunnel has an outer diameter of 6.35 m and is excavated by a Herrenknecht Mixshield TBM. The second TBM will be launched in a few weeksâ€™ time. IRIS.tunnel supports the site team with the new â€śMass Balanceâ€ť module allowing realtime assessment of the excavated soil mass.