The Next Generation of Mixed Ground Tunnel Boring Machines
What is the most economical way of tunneling in mixed ground that may experience high pressures? Non-continuously pressurized, mixed ground Tunnel Boring Machines (TBMs) are being utilized to deal with a wide range of geology. Continuous improvements in these mixed ground machines allow for ever-increasing efficiency and reduction of project risk due to unexpected conditions. Read this paper for a look at how new improvements to Crossover machines will enable excavation of an expanded range of ground conditions. These conditions include mixed ground with low fines, mixed face rock, and fracture / fault zones with high pressures where in the past a Slurry TBM may have been utilized.
- Use of a Tunnel Boring Machine on Nepal’s First and Second TBM-Driven Tunnels
- Record-Setting Large Diameter Mixed Ground Tunneling in Turkey: The Eşme-Salihli Railway Tunnel
- Lessons Learned During Excavation of the Incredibly Challenging Yin Han Ji Wei Water Diversion Tunnel
- Record-Setting Tunnel Boring Below Lake Ontario at the Ashbridges Bay Outfall Tunnel
- Enhanced Probe Drilling & Pre-Grouting on Hard Rock TBMs