Rescue and Refurbishment of a TBM inundated with Flood Waters at the New York City Harbor Siphon Project
In October 2012, New York City’s Harbor Siphons Project and its 3.6 m CAT EPB ground to a halt when hit by Superstorm Sandy. Despite contractor Tully/OHL JV’s best efforts to mitigate anticipated flood risks, the launch shaft was inundated with seawater, flooding the tunnel and TBM just 460 m into the 2.9 km long drive. A team of Robbins and OHL personnel were able to document, reverse engineer, and refurbish severely corroded components of the TBM while in the tunnel, resulting in a successful re-launch in April 2014. This paper will document the incredible efforts of the team to rescue and refurbish the TBM, and its performance since the restart.
- Unprecedented In-Tunnel Diameter Conversion of the Largest Hard Rock TBM in the U.S.
- Hard Rock Tunnel Boring at the Jefferson Barracks Tunnel
- The Next Generation of Mixed Ground Tunnel Boring Machines
- Rock Tunnels at High Water Pressure: Non-Continuous Pressurized TBMs vs. Slurry
- Hybrid TBM Excavation in Challenging Mixed Ground Conditions at the Mumbai Metro