Our new platform for microtunnelling navigation has successfully supported the first-ever pipe jacking over 2,000 km north of Bruchsal, in Turku, Finland. The TBM achieved a breakthrough right on target after navigating three bends and over 800 meters of drive.
Project overview
The project in Turku is situated on the Aura River, at the mouth of the Baltic Sea. It involves the construction a new outfall tunnel as part of a broader initiative to complete a UV disinfection plant. Awarded to Ward and Burke by the municipal authority in November 2019, this project aims to future-proof the treatment plant against climate change and reduce wastewater load on the Baltic Sea. Progress on-site is going well, and the team has successfully completed Finland’s first-ever microtunnelling drive for their client, Turun seudun puhdistamo Oy. The finished tunnel is 804 meters long with a diameter of 2.98 meters and includes a triple curve. It wass completed using a Herrenknecht TBM.
Highest accuracy achieved
We were delighted that our customer allowed us to intensively test our new TUnIS Navigation MT system and MT.connect hardware platform in continuous operation during this project. The TUnIS Navigation MT system significantly improved the accuracy of visibility of the tunnelling process and the platform’s reliable WLAN also proved advantageous, simplifying navigation system use and providing substantial support and time savings during tunnel repair and maintenance work.