​Putting The Power Of Monitoring And Safety In Your Hands​

Example location of sensors for Tunnel's remote monitoring 

For more information and details about sensors see PRODUCTS section.



Strain Gages Sensors

 Measurement of strains, deformations and stresses
 Walls, plates, pipes, connections and pavements

Temperature Sensors

 Measurement of absolute  temperature on structure's surface  and relative temperature for  compensation of strain  measurementsStructural elements, engines, turbines and generators


Displacement Sensors

 Measurement of displacement  between two gage points, 
 Construction joints, crack/fissure  growth and structural members



 Measurment of accelerations from  DC to low frequencies Large structures, engines and control panels


 Measurement of angular variation  and slope displacements For structures and adjacent  structures during construction,  work excavations and after  completation of construction


 Measurement of drainage, leakage,  water level, water pressure and pore  pressure Reservoirs, wells, pipes, Storage tanks, excavations, embankments and  banks


Pressure & Load Cells

 Measurement of loads and  pressures Foundation, embankment and  structural elements

Boston Big Dig Tunnel Collapse​, Massachusetts, 10 July 2006​

Collapse of Cologne Stadtbahn, Germany, 3 March 2009


Collapse of Gerrards Cross Tunnel crown, Buckinghamshire, England,

30 June 2005


During the last 100 years the works of tunnels have been the choice in projects where considerations and constraints of navigation, environmental, traffic, aesthetics, land reclamation and concept of military strategy have been present. Regardless of the reasons why such fascinating piece of engineering was chosen, the fact is that the failure of these works could have a big impact on the safety of users and the infrastructure that is founded on these, to which it would summarize a lost millionaire.

​Enhance its program of maintenance and safety knowing the integrity and mechanical behavior of the segment structure of shield tunnel under environmental effects and traffic loads during construction process and in-service installing a remote Structural Health Monitoring System. ​

This system will allow you to know the internal and external effects that cause the loads derived from most common failures (wedges falling from the roof or sliding out of the sidewalls) on the elements that compose the tunnel's structure and help you to prevent structural failure, accidents and disasters. Some of the effects that can monitor are: reinforcing bar stress, concrete strain and temperature, segment displacements, bolts stress, water pressure, soil pressures and corrosion level of reinforcing bars are some of effects.

​Below list of sensors with their respective functions and applications in Tunnels.

​Putting The Power Of Monitoring And Safety In Your Hands​