Tunnel Turkey

With Brad Grothen

Event Name: Tunnel Turkey International Tunnelling Symposium
Dates: December 21-22
Location: Şişli/İstanbul, Turkey
Venue: Fairmont Quasar İstanbul
Booth: Stand 8

Join us December 21st and 22nd for the Tunnel Turkey International Tunnelling Symposium in Istanbul. Our team of international experts will be speaking on Robbins’ latest products and projects during the conference, including non-circular innovations for hard rock tunneling. Stop by Robbins’ stand 8 to find out more on our projects in Turkey, including our record-breaking project in Esme! The Esme-Salihli project has bored 32.4 m in a day, 178.2 m in a week, and 721.8 m in a month using Robbins Crossover XRE machine, making it the fastest machine over 13 m in diameter ever recorded.

Robbins Lecture

Non-Circular Tunneling in Rock: A New Way Forward
Presented by Brad Grothen P.E., Robbins Technical Director

Abstract: When a flat roadbed is needed, is a circular TBM the best way to go? In this presentation, Robbins Technical Director Brad Grothen will discuss a mechanical boring machine currently being used in the mining industry for a rectangular tunnel cross section, and the potential for use of this machine in civil tunneling. Grothen will also look at emerging technology to demonstrate that by using non-circular TBMs, a flat invert can be safely and economically created in one pass.


Brad Grothen

Vice President-Engineering