Advanced monitoring criteria for precocious alerting of rainfall-induced flowslides

Monitoring of active landslides is fundamental for the design of stabilization measures, but is also important to check the behaviour of stable slopes which may suddenly become unstable, as a consequence of any change in boundary conditions, experiencing a catastrophic failure. The paper illustrates some monitoring techniques which are being tested at the Geotechnical Laboratory of C.I.R.I.AM. to predict in real time the occurrence of rapid rainfall-induced flowslides in unsaturated granular soils of pyroclastic origin.