Abstract
The paper describes the three-dimensional numerical model of Ville San Pietro, an Italian village subject to slope movements causing damage. The church (dating back to 1776), which is the most significant building of the area, is modelled too. The information from geotechnical and geophysical surveys on field are used to define the model geometry and the soil properties. A finite element code is adopted to simulate the slope behavior in occurrence of water table fluctuations, detected by piezometers, and to evaluate the slope displacements and stability. The validation of the model is carried out using the inclinometer and interferometry measures and by on-site inspections. The model demonstrated a good ability to simulate the slope behavior during the raising and lowering of the water table. The critical areas computed by the numerical code are in good accordance to the actual portions affected by soil displacements and damages. The modelling presented in this paper is crucial for future analyses that will take advantage of an innovative monitoring system, which will be installed on site.
Highlights
Landslides are common and widespread phenomena in Italy and around the world
2018specified, five calculation phases are performed by the model presented in the previous section
From March 2018 to June 2018, the water table dropped, as detected by the piezometers (e.g., Figures 7 and 8). This water table fall is simulated by PLAXIS 3D, adopting the model described in the previous section
Summary
Landslides are common and widespread phenomena in Italy and around the world. Each year, they cause damage to the population and very serious economic and environmental problems. The slope stability monitoring and the landslide risk mitigation are primary scientific and social targets in order to improve the resilience of our territories. Landslides occur in a given area due to the concomitance of various factors (anthropic, geological, hydrological, etc.). The rainfall is the main landslide triggering factor. The LAndslide Monitoring and Predicting (LAMP) system, proposed in an INTERREG-ALCOTRA project called AD-VITAM
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