Cleft measurements
In many cases distances are of vital importance: snow height in an avalanche rupture zone, the width of a crack in presumably unstable rock or the distance to a water surface in order to determine flow height. Our crack meters are ideal to measure crack movements very locally and precisely.
More information:
⇒ Background
⇒ Applications
⇒ Additional technologies
Background
For precise measurements of movement along single cracks, our crack meters supply measurements with precisions below 1mm. A similar accuracy can also be reached with our interferometric georadar – but across whole faces of rock. Combining both technologies lets us determine the critical zones in an unstable rock face in order to place the crack meters exactly where they are needed most.
Boreholes equipped with extensometers additionally let us detect movements deep within the rock or ground – at precision of 0.1 mm and at a wide range of different depths.
Depending on the situation, data from these measurements can be transmitted to our servers by radio or cable connection.
Applications
Many of our clients rely on our crack meters to reliably measure crack deformation at the sub-mm levels. Georadar measurements can help identify critical zones to place crack meters in the best locations.
Read more about customer projects that employ crack meters here:
- Rock fall Gurtnellen
- Construction site of the Klein Matterhorn cable car. Monitoring system with five crack meters. View a video about the construction project here.
Additional technologies
These technologies are often combined with crack meters:
Five crack meters monitor the construction site at Klein Matterhorn.
Crack meters can measure deformation at the sub-mm level.
Cable or radio connections can be used to transmit data from the crack meters to the data portal, where it is instantly visualized.
We use small radio transmitters that can be connected to the crack meters to transmit data.
Crack meters are easy to install, even in the steepest walls.
In many cases, using more than one crack meter allows geologists to get a better picture of the ongoing displacements.
Extensometers are integrated into boreholes and measure deeply situated movements.
