Mathematical modelling of the landslide occurred at Gagliano Castelferrato (Italy)

Maugeri, M.; Motta, E.; Raciti, Erminia

doi:10.5194/nhess-6-133-2006

Cited by 17 publications

(5 citation statements)

References 11 publications

(8 reference statements)

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“…Some GNSS sites stand close to obvious ground instabilities. For instance, site GALF stands at ∼1.5 km from the well‐known Gagliano‐Castelferrato landslide (e.g., Maugeri et al., 2006), while most of the selected PS for site MMME are located on the neighboring villages of Roccafiorita and Limina that are largely affected by gravitational mass movements. Most of these instabilities are identified from field observations.…”

Section: Ground Deformation Map From Ps‐insar Analysis Of Sentinel‐1 ...mentioning

confidence: 99%

Present‐Day Surface Deformation of Sicily Derived From Sentinel‐1 InSAR Time‐Series

et al. 2022

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The Quaternary geodynamics of the Central Mediterranean region is controlled by the migration of narrow orogenic belts within the slow Nubia‐Eurasia plate convergence. As testified by the occurrence of major volcanic and seismic events, the Eastern Sicilian Margin is presently one of the most active regions. Using a Permanent‐Scatterer approach, we process Sentinel‐1 satellite images acquired from 2015 to 2020 to provide an island‐wide quantification of surface displacements at a high spatiotemporal resolution. We then convert the calculated mean surface velocities along the ascending and descending satellite line of sight into the ITRF2014 reference frame by using GNSS velocity data derived from regional stations. The resulting pseudo‐3D velocity field mainly highlights a general uplift of about 1.5 ± 0.5 mm/yr of the Nebrodi‐Peloritani range and its differential motion with respect to mainland Sicily along the Cefalù‐Etna seismic zone. Permanent/Persistent‐Scatterer (PS) vertical velocities in the Eastern Hyblean region reveal a long wavelength eastward downbending of the margin, including the inferred epicentral area of the 1693 Noto earthquake. Compared to Quaternary coastal uplift rates, these results confirm the relative low activity of Western Sicily, a potential slow uplift of South‐Central Sicily and a significant discrepancy along the Eastern Hyblean margin were PS‐derived vertical velocities that appear 2–3 mm/yr lower than the Quaternary rates. Over the 2015–2020 timespan, transient processes are also captured, notably on Mount Etna, showing both magmatic pressurization uplift and collapse of the eastern flank, but also all over Sicily where numerous gravitational mass movements and anthropogenic ground subsidence are detected.

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Section: Ground Deformation Map From Ps‐insar Analysis Of Sentinel‐1 ...mentioning

confidence: 99%

Present‐Day Surface Deformation of Sicily Derived From Sentinel‐1 InSAR Time‐Series

et al. 2022

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“…et al [9] used the finite difference method (FDM) and the limit equilibrium method (LEM) to conduct numerical analysis on typical slopes common in Indian railways to determine the stability of safety factors under static and seismic conditions. Maugeri, M. et al [10] put forward a mathematical model to predict the viscous deformation of landslides based on the FDM method, which has been verified in a landslide case in Gagliano Castelferrato, Italy. However, the numerical method based on the grid will appear as grid distortion, which will lead to large calculation errors or even non-convergence [11].…”

Section: Introductionmentioning

confidence: 99%

Smoothed Particle Hydrodynamics (SPH) Analysis of Slope Soil–Retaining Wall Interaction and Retaining Wall Motion Response

Yang,

Tan,

Ren

et al. 2024

Processes

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The occurrence of slope instability disasters seriously endangers the safety of people’s lives and property in China. Therefore, it is essential to study the slope instability process and the interaction between soil and retaining walls. In this paper, the smoothed-particle hydrodynamics (SPH) method, based on the elastoplastic constitutive model of rock and soil, was used to simulate the entire process of slope instability and the interaction between soil and retaining walls. The model, based on the classical elastic–plastic theory, includes linear elastic deformation and plastic deformation following the non-associated flow rule under the Drucker–Prager (DP) yield criterion. By considering the plastic characteristics of geotechnical materials, this method can accurately simulate the slope movement process. The model was established, calculated, and compared with a slope example, thus verifying its feasibility. Furthermore, the motion response of the retaining wall under different conditions was studied, which provides a new numerical simulation platform for the stability checking of the retaining wall and motion analysis after the interaction between the retaining wall and slope soil.

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“…Moayedi et al [24] conducted different FEM analyses to determine susceptibility to landslides and consider appropriate countermeasures. Maugeri et al [25] presented an FDM model to simulate the seasonal creep in natural slopes and predict the viscous deformations of a landslide body. Bozzano et al [26] used an FDM approach to investigate the role of local seismic amplification in the reactivation of a landslide.…”

Section: Introductionmentioning

confidence: 99%

Propagation Modeling of Rainfall-Induced Landslides: A Case Study of the Shaziba Landslide in Enshi, China

Cheng

Dai

2023

Water

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Geological disasters, especially landslides, frequently occur in Enshi County, Hubei Province, China. On 21 July 2020, a large-scale landslide occurred in Enshi due to continuous rainfall. The landslide mass blocked the Qingjiang River, formed a dammed lake and caused great damage to surrounding roads and village buildings. In this study, the geomechanical properties of the landslide mass were obtained through field surveys. A three-dimensional topography model of the slope was established using the particle flow code (PFC) and the numerical parameters of the model were calibrated. A 3D discrete element model (DEM) was used to simulate the propagation of Shaziba landslide, and the dynamic behavior of the landslide was divided into five stages. The simulation results show that the landslide movement lasted approximately 1000 s. The maximum average velocity of the landslide reached up to 7.5 m/s and the average runout distance was about 1000 m. The simulated morphology of the landslide deposits was in good agreement with the field data. In addition, the influence of effective modulus on the calculation results was analyzed. The results indicate that the propagation behavior of a landslide and the morphology of landslide deposits are closely related to the effective modulus in the contact model of the PFC3D.

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Mathematical modelling of the landslide occurred at Gagliano Castelferrato (Italy)

Cited by 17 publications

References 11 publications

Present‐Day Surface Deformation of Sicily Derived From Sentinel‐1 InSAR Time‐Series

Present‐Day Surface Deformation of Sicily Derived From Sentinel‐1 InSAR Time‐Series

Smoothed Particle Hydrodynamics (SPH) Analysis of Slope Soil–Retaining Wall Interaction and Retaining Wall Motion Response

Propagation Modeling of Rainfall-Induced Landslides: A Case Study of the Shaziba Landslide in Enshi, China

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