ROCK MECHANICS
GRM offers rock mechanics monitoring, geotechnical monitoring and rock stress measurements.
Rock mechanics
GRM offers rock mechanics monitoring, geotechnical monitoring and rock stress measurements.
We are able to carry out both demanding assignments and the installation of individual instruments. In large-scale installations such as underground measurement systems, we can measure and record dozens of channels with, for example, extensometers, inclinometers, load bolts and temperature sensors.
All measuring equipment can be provided with real-time data and alarm limits can be set on the systems, which can increase site safety and speed up response time to changes.
The continuous data stream allows events to be timed very accurately to, for example, blasting or other site events.
Rock mechanics
Monitoring
A single automatic measuring instrument such as an extensometer or any other device measuring pressure, stress, collapse, displacement, pouring or temperature.
Multiple sensors connected to a larger logging system
Automatic alarms
Real-time data
Manual measurements such as tunnel convergence measurement
Automatic convergence measurement with the so-called Basset system
Rock stress measurements
Hydraulic fracturing is a coarse 2D stress measurement method that allows two principal stresses to be measured. Measurements can be taken from the ground or from below ground. The current equipment can be used in 100 m deep holes, but the depth scale can be increased if the project so requires. Measurement works in 46mm - 60mm holes.
GRM offers monitoring of rock stress changes with adhesive HID cells.
