Tunnel inspection and underground work

Cementys proposes an integrated offer for the inspection of buildings and civil engineering structures before, during and after works. 

Our solutions :

  • Topographic and geodetic measurements (INSAR)
  • Force measurement in tie rods and struts
  • Wall tilt monitoring
  • Deformation measurements of crossed railway tracks
  • Settling measures in ZIG
  • Real-time monitoring of existing buildings
  • Pile length measurements
  • Search for anomalies on structures
  • Landslide monitoring
  • Vibration transmission measurements during work (noise measurement, seismic cross-hole)
  • Detection of cavities (microgravity, georadar, seismic)
  • Vulnerability diagnosis of existing buildings

Our technologies :

  • Robotic Total Station
  • Electro-level
  • Torque wedge
  • Inclinometers
  • Inclinometric chain
  • Hydraulic leveling pot
  • Vibrating wire sensors
  • Fiber optic sensors
  • THMInsight: data platform and interactive visualization
  • Drilling inclinometers
  • Geophones and seismographs
  • Piezometers
  • Accelerometers
  • Mechanical impedance on piles and structures
  • Terrestrial radar

Our references in underground and railway works:

Société du Tunnel de Frejus, RATP, SNCF, Centre d’Essais Ferroviaires (ALSTOM), Mairie de Paris, Aéroport de Paris, ANDRA, Eurotunnel, SAP (Société d’Assainissement de Paris), SIAAP, Groupement Alliance (NGE, Demathieu Bard, Pizzarotti, Implenia), MESEA, SID (Service des Infrastructures de la Défense)