Analysis of infiltration processes into fractured and swelling soils as triggering factors of landslides

Galeandro, Annalisa; Doglioni, Angelo; Simeone, Vincenzo; Šimůnek, Jiřı́

doi:10.1007/s12665-013-2666-7

Cited by 27 publications

(12 citation statements)

References 35 publications

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“…The analysis has been performed by means of a dual-permeability model Simeone 2010, 2012;Galeandro et al 2011Galeandro et al , 2013b. The results obtained by means of this analysis have been extended for a sloping soil surface, in order to evaluate the effects of infiltration processes on slope stability (Galeandro et al 2013a). Evaluations of slope stability have been developed according to the infinite slope analysis (Skempton and De Lory 1957;Doglioni et al 2013a).…”

Section: Introductionmentioning

confidence: 99%

Analysis of rainfall infiltration effects on the stability of pyroclastic soil veneer affected by vertical drying shrinkage fractures

Galeandro

Šimůnek

Simeone

2013

Bull Eng Geol Environ

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The paper presents a preliminary, simplified evaluation of the effects of rainfall infiltration on the stability of slopes in layered pyroclastic soils affected by shrinkage vertical fractures. The analysis has been developed with a special reference to a stratigraphic sequence obtained by an in situ survey at Pizzo d'Alvano (Southern Italy). The analysis of rainfall infiltration is performed using an original dual-permeability model. Results show how fractures strongly condition infiltration depending on rainfall intensity. Prolonged low-intensity rainfall may lead to a higher saturation of the surface soil layer than short, intense rainfall when water may flow quickly through fractures into the underlying more permeable soil layers. Calculated distributions of pore pressure are used for the slope stability analysis using the infinite slope approach. Variations of the safety factor as a consequence of infiltration show that prolonged rainfall can induce a more relevant decrease in the safety factor than intense precipitations.

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Section: Introductionmentioning

confidence: 99%

Analysis of rainfall infiltration effects on the stability of pyroclastic soil veneer affected by vertical drying shrinkage fractures

Galeandro

Šimůnek

Simeone

2013

Bull Eng Geol Environ

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“…Cracks clearly play an important role in the infiltration rates (Mitchell and van Genuchten, 1993;Römkens and Prasad, 2006) and consequently in the destabilisation of slopes (Stumpf et al, 2013;Galeandro et al, 2014). The processes analysed here play a role in the closure of cracks, as shown in Fig.…”

Section: Discussionmentioning

confidence: 73%

“…This monitoring has permitted us to study the micro-topographic surface deformation and erosion processes that may have an impact on infiltration rates during rainfall events (Mitchell and van Genuchten, 1993;Römkens and Prasad, 2006). In addition, these surface changes may also play a role in the triggering of landslides (Galeandro et al, 2014). Contrary to the original intention, the duration of the experiment and the rainfall intensity did not permit investigation of splash erosion, which can be important when rainfall is intense (Selby, 1993), because its effect was below the resolution of our acquisition and because the intensity of the rainfall was rather low.…”

Section: Introductionmentioning

confidence: 99%

Erosion processes in black marl soils at the millimetre scale: preliminary insights from an analogous model

Bechet

Duc

Jaboyedoff

et al. 2015

Hydrol. Earth Syst. Sci.

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Abstract.To investigate the millimetre-scale surface processes caused by natural rainfall, an undisturbed sample of badlands soil (1 m long, 0.5 m wide and 0.15 m thick) was carefully extracted. The sample is composed of black marl soil from a badlands area of the Draix Observatory (SE France). After extraction, the undisturbed sample was placed at the same slope angle (45 • ) as its original orientation and was then monitored for several processes via a terrestrial laser scanner (TLS) with millimetre-scale accuracy and resolution. This experiment identified several surface processes interpreted as micro-landslides, swelling of the black marl material and lateral expansion that closed desiccation cracks. These micro-processes illustrate the complexity of the surface micro-topography changes that control erosion and infiltration rates over time.

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“…But these models do not analyze rainfall -induced landslides. Galeandro et al [15] investigated a dual permeability model in which fractures behave as open channels. In the present work, we are focussing on infiltration process with nonuniform flow in soils.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Infiltration Process with Non-uniform Flow in Soils

Saxena¹,

Agarwal²

2015

J Appl Computat Math

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Analysis of infiltration processes into fractured and swelling soils as triggering factors of landslides

Cited by 27 publications

References 35 publications

Analysis of rainfall infiltration effects on the stability of pyroclastic soil veneer affected by vertical drying shrinkage fractures

Analysis of rainfall infiltration effects on the stability of pyroclastic soil veneer affected by vertical drying shrinkage fractures

Erosion processes in black marl soils at the millimetre scale: preliminary insights from an analogous model

Numerical Investigation of Infiltration Process with Non-uniform Flow in Soils

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