The case of a landslide in Southern Italy was studied by modeling pore pressure distribution under steady and transient conditions. The goal was to interpret the in situ piezometric and inclinometric measurements, and to investigate the effects of the pluviometric regime on the slope stability. Steady state analyses show that the hypothesis of zero pore pressure at the ground surface gives the best fit between theoretical and experimental results, despite the nearly arid climate. The results of the transient state analyses show that the condition of zero pore pressure is appropriate for both rainy and non-rainy periods because of the particular soil properties, i.e. heterogeneity, compressibility and hydraulic conductivity. This condition generates a distribution of pore pressures which can justify the observed horizontal displacements.
Coupled effect of pluviometric regime and soil properties on hydraulic boundary conditions and on slope stability
VASSALLO, ROBERTO;DI MAIO, Caterina;
2008-01-01
Abstract
The case of a landslide in Southern Italy was studied by modeling pore pressure distribution under steady and transient conditions. The goal was to interpret the in situ piezometric and inclinometric measurements, and to investigate the effects of the pluviometric regime on the slope stability. Steady state analyses show that the hypothesis of zero pore pressure at the ground surface gives the best fit between theoretical and experimental results, despite the nearly arid climate. The results of the transient state analyses show that the condition of zero pore pressure is appropriate for both rainy and non-rainy periods because of the particular soil properties, i.e. heterogeneity, compressibility and hydraulic conductivity. This condition generates a distribution of pore pressures which can justify the observed horizontal displacements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
