Since fall 2008, each one of the three drillings installed by the Sites company, C6, C20 and C11, are instrumented with two tiltmeters, oriented North-South and East-West. The acquisition frequency is 10 minutes and data are recovered (in Ampere), at the Geoazur laboratory, at the same time than piezometry data.
After conversion, data enable to observe continuously the angular deformations at the different instrumented points on the slope. Deformations are thus comparable to the other parameters that are monitored in order to understand the processes leading to slope deformation.
The detailed Technical Notes of the measurement equipment comprise:
Installation schemes for the devices in Technical Note 1 appendix 1
Wiring configurations in Technical Note 1 appendix 2
Sensor installation notes in Technical Note 1 appendix 3
Certificates of calibration in Technical Note 2 appendix 4
Resulting charts of the recorded values in Technical Note 3 appendix 5
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