In situ rock stress measurement and laboratory testing
Tunnel stress measurement
In situ stress measurement services
We offer full services for stress measurements all over the world. We conduct highly reliable and robust in situ stress measurements from the tunnel profile using our own LVTD cell stress measurement method:
Feasibility estimation for LVDT cell stress measurements on-site
Geological mapping of the measurement sections
Drilling with our own equipment with stress measurements
Testing of elastic constants with biaxial (Hoek) cell
3D photogrammetry and modeling of the measurement area and the orientations and locations of measurement holes
Since 2009 in situ stress measurements have been carried out in over twenty locations in Finland and Sweden in underground laboratories and mines to evaluate the usability of the new stress measurement technique.