A challenging 612 metre pipe jacking under the city of Dubai has just been completed, and once again VMT’s compact guidance technology proved to be the perfect fit for microtunnelling in confined spaces.
The project, carried out by DETech Contracting LLC using a Herrenknecht TBM (4.2 m outer diameter), relied on the precision of the TUnIS Navigation MTGyro system. Specifically designed for curved alignments, limited access conditions and small to medium diameters (DN 800 and above), TUnIS Navigation MTGyro ensures accuracy and control even when line-of-sight methods aren’t an option.
Compact precision underground
This gyro-based navigation system is packed with features that simplify operation and increase project efficiency:
- No line of sight required: perfect for non-accessible or curved drives
- Quick and easy control surveys: save time and avoid steering errors
- Reduced jacking forces: for smoother, more consistent progress
- Error correction and vertically coupled navigation: increase safety and precision throughout the drive
From minimal setup to a smart interface, TUnIS Navigation MTGyro keeps everything aligned — even when the tunnel isn’t.
VMT’s Head of Project Management, Nadine Fenrich, visited the site and came back with praise for the DETech and Herrenknecht teams: “The cooperation, commitment and vision on site were truly impressive,” she noted. “This is what future-oriented tunnelling looks like.”
Congratulations to all project partners on a successful mission underground!