Abstract
Hydrological monitoring of slope susceptible to shallow landslides allows for identifying the triggering conditions of shallow failures and implementing slope stability analysis at site-specific scale. In this work, a case study of a long-term hydrological monitoring in a slope susceptible to shallow landslides of Oltrepo Pavese (Northern Italy) is presented. The triggering mechanism develops in wet seasons (winter and spring) due to the uprise of a perched water table at about 1 m from ground surface, in consequence of the most intense rainfalls (about > 60 mm in 48 h). Unstable conditions (safety factor < 1.0) are correctly modeled on the basis of both water content and pore water pressure, with a better prediction considering hysteresis effects. Safety factor on the basis of water content can correctly assess the triggering conditions for unsaturated and completely saturated soils. It is possible estimating shallow landslides triggering caused by positive pore water pressures only considering this parameter.
Highlights
Rainfall-induced shallow landslides involve the slope 2 Material and methods materials till less than 2.0 m from ground
Monitoring of a slope susceptible to shallow landslides is fundamental for identifying the main soil hydrological behaviors and the conditions which lead to soil failure
In the presented case study, the main triggering mechanism develops especially during wet seasons and it is linked to an increase in water content till about 1 m from ground in correspondence of the most intense rainfalls
Summary
Rainfall-induced shallow landslides involve the slope 2 Material and methods materials till less than 2.0 m from ground. Several authors identified different Pavese, in correspondence of the northern termination of soil hydro-mechanical behaviors leading to shallow Pavese Apennines (Fig. 1). This slope is representative of landslides triggering through the application of other sites in this area prone to shallow landslides. The area where the study slope is located is are: 1) analyzing the main hydrological behaviors of the characterized by a high density of past rainfall-induced test-site slope soil based on field monitoring, in particular shallow landslides (Fig. 1). The source area had the same slope angle of the zone where the monitoring station is located (30°), and the failure surface developed at 1.0 m from the ground
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
