An Emerging Alternative to Slurry TBM Tunneling in Rock under High Water Pressure 

When you’re faced with a hard rock tunnel where there are expected significant sections under high water pressure, which tunneling method do you choose?   

Slurry Shield tunneling, while traditionally used in dealing with high water pressures, is not always the best solution in rock. Non-Continuous Pressurized (NCP) TBM Tunneling with a shielded machine is an alternative, highly effective method. NCP TBMs have consistently proven they can successfully navigate rock with high water pressures safely and effectively, using a comprehensive grouting program or sequential advance in EPB mode.  

During this complimentary, 45-minute webinar we will dive into the pros and cons of Slurry and NCP TBMs, and analyze case studies of both machine types from all over the world. Join in on our conversation with Robbins President Lok Home and Brad Grothen P.E., Robbins Technical Director as we discuss the future of tunneling in rock under pressure.   

Click here to register 

Date:  Wednesday, April 28, 2021 

Time: 8 AM PDT | 11 AM EDT | 3 PM GMT  

Submit your questions in advance to webinars@robbinstbm.com  to get a thoughtful, well-researched answer during the live Q&A session at the end.  Visit https://www.robbinstbm.com/grout-or-not-webinar/. 14/21.