Miniaturised extensometers for ground and rock displacement monitoring
MEXID miniaturized multi-point borehole extensometers monitor displacement of measuring points positioned deep in ground or rock, with reference to the instrument head. The system is designed around a small drilling diameter and is supplied pre-assembled to simplify installation.
Extensometer
Ground movement
Extensometers
Small diameter borehole
Deep displacement monitoring with a compact borehole extensometer
MEXID extensometers help project teams monitor displacement at multiple measuring points positioned deep in ground or rock. The system provides a reference back to the instrument head, allowing relative movement to be tracked over time.
The main advantage of the MEXID system is its small drilling diameter. This can help reduce installation effort, drilling cost and site disruption compared with larger borehole extensometer arrangements.
Where Extensometers are used
Miniaturised borehole extensometers suit projects where displacement needs to be measured at selected depths in ground or rock.
Tunnels and underground works
Monitor displacement around underground excavations, linings and surrounding ground.
Slopes and rock masses
Track movement of deep measuring points within ground or rock.
Deep excavations
Support deformation monitoring around excavations and retaining systems.
Civil structures
Monitor movement where ground or rock displacement may affect infrastructure.
From deep measuring points to displacement data
A MEXID extensometer system should be selected around the monitoring depth, number of measuring points, drilling constraints, expected movement range and data acquisition requirements.
50mm
small drilling diameter
MPBX
multi-point borehole extensometer
Output
VW or analogue
Measuring points
Project teams position measuring points at selected depths in ground or rock to monitor relative displacement.
Reference head
The instrument head provides a fixed reference point for measuring displacement and assessing movement.
Data acquisition
Data can support trend review, trigger levels, automated alerts, reporting and construction decisions.
Request the MEXID datasheet or project guidance
Request the datasheet or tell us about your monitoring requirement.
Need help selecting an extensometer system?
Tell us about the monitoring depth, ground conditions, expected movement range and reporting requirements. Metric Dynamics can help identify a practical extensometer setup for your project.