Reason why


The purpose of TUnIS Positioning Shutter is to determine the current position of the shutter compared to the designed block axis with millimetre accuracy.

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To ensure precise tunnel shutter positioning, surveying personnel traditionally conduct iterative measurements using total stations and prisms, requiring significant effort and additional time for office post-processing.

TUnIS Positioning Shutter eliminates the need for total station setup or repetitive measurements. When the shutter approaches the block joint, the system instantly computes and presents all required correction values. Equipped with camera sensor units, TUnIS Positioning Shutter provides real-time, accurate position data, optimally controlling machine positioning for enhanced efficiency.


Benefits


  • Accelerated workflow
    No setup of total station or other measurement devices needed. As soon as shutter is close to the block join all needed correction values will be calculated and displayed.
  • Digitalisation
    Eliminates paperwork and office rework. Final shutter positions are stored in the TUnIS database, accessible for export and reporting in digital formats anytime, anywhere.
  • Automation
    Automates most positioning tasks, serving as a basis for faster, higher-quality, and safer future shutter alignment processes.

Customer experience


Project: Thames Tideway

“The team is really satisfied with the system with great improvement on the programme, quality of the secondary lining, and resources required to set the shutters”

Antoine Remy, Secondary Lining Manager
CVB (Costain | Vinci | Bachy Soletanche)

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Measurable Added Value:

  • Programme savings | 1 hour > 8 min
    Considering the roll of the shutters, traditional setting without the VMT system proved to be difficult, taking up to one hour per shutter.
  • Labour savings | 1 surveyor less per shift
    Surveyors on call only, doing regular checks of the setting of the shutters, not part of the cycle anymore.
  • Quality improvement
    With the continuous monitoring, the position of the shutters can be checked at all times, thus improving the accuracy of the setting.

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Our customer experiences provide valuable insights into working with the system.