Calibration of a rheological model for debris flow hazard mitigation in the Campania region

摘要

The paper reports the results of the back-analyses of the propagation of debris flows in pyroclastic(deposits in the Campania region,Italy. 57 well-documented case histories were analyzed using the 2-3DDAN-W) code (Hungr,2003) with two different rheological models: the frictional model and the Voellmymodel. The latter produces the more consistent results in terms of total runout,debris spread and distribution aswell as velocity data. The results show that it may be possible to model past events reasonably accurately usingthe Voellmy model. Although it is difficult to make predictions about future landslides,the calibrated modelcould be used to predict their propagation if the detachment area and the morphology are known.