Pressure Tunnel Monitoring

pressure tunnel monitoring

Monitoring of Pressure Tunnels In The Construction Industry

Industry:Geodesy / Construction
Application type:Monitoring

Brief description

Pressure Tunnel Monitoring laser

The Swiss company Solexperts charges the test track in OWDS (headwater pressure tunnel) while the injections for passive bias to monitor automatically. The task was 3 sections with 5 sampling lengths to automatically monitor and exceed limits an alarm lamp to set so that the injections are stopped in operation. The profiles have been arranged at a distance of about 20 m. For this Dimetix laser sensors are used that are ideal for these harsh environments
due to their robustness and precision measurements.

Pressure Tunnel Monitoring laser

Passive bias of penstocks
The penstocks are performed with a non-reinforced concrete inner shell of thickness 0.5 m. To accommodate the corresponding tensile stresses in the concrete lining (internal pressure), a passive bias of the concrete shell is required. For this purpose, an injection pressure is applied in the annular gap between the spray concrete lining and the concrete shell. To harden and seal a consolidation injection is carried out beforehand in the surrounding mountains through holes and “Einfachpacker”.

Customers advantages

  • Easy installation due to visible laser
  • Operating in large temperature range (-40 .. +50° C) possible
  • Maintenance free
  • Measuring range up to 500m
  • Accuracy ± 1mm

Products used

FLS-C series
The FLS-C distance measuring device measures absolute distances up to 500 meters on reflective foil without contact. Due to most innovative laser technology the FLS-C has a unique accuracy of ±1.0 mm. A further advantage of the FLS-C is the quick determination of the positions of moving objects. The FLS-C is an optical distance measuring device. It measures, maintenance-free, distances up to 65m on natural surfaces. It determines positions of objects that are difficult to access or may have very high surface temperatures. Just as easily, it accurately measures distances in hazardous environments. The FLS-C is designed to be suitable for both, heavy industrial and outdoor applications. It is constructed of a solid metal case and provides class IP65 environmental protection. It represents a cost efficient solution even at extreme environment temperatures as low as -40° C. Furthermore, various features make it flexible for multiple applications in numerous industries such as automotive, paper, metal and textile.


Pressure Tunnel Monitoring laser

• Measuring range 0.05 up to 500m
• Accuracy ±1.0 mm
• Repeatability ± 0.3 mm
• Extended operating temperature
• Solid metal case IP65
• Supply voltage

Download the Monitoring Of Pressure Tunnel PDF

For more information about the pressure tunnel monitoring, please contact us.