Runout of Landslides in Sensitive Clays

Strand, Stein-Are; Thakur, Vikas; L’Heureux, Jean-Sébastien; Lacasse, Suzanne; Karlsrud, Kjell; Nyheim, Trude; Aunaas, Kristian; Ottesen, Hanne Bratlie; Gjelsvik, Vidar; Fauskerud, Odd Arne; Sandven, Rolf; Åkershult, A Rosenquist af

doi:10.1007/978-3-319-56487-6_26

Cited by 10 publications

(2 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The propagated region of retrogressive failure is then drawn from the base of the critical failure surface, unlike the 1:15 method where it is drawn from the base of the toe of the slope. The runout distance (E), as determined via the NIFS, is method recommended [34] to be 1.5 times the retrogressive distance (R) in open terrain and three times this distance in channelized terrain. The Norwegian Geotechnical Institute (NGI) method draws the same 1:15 line from the base of the critical failure surface as that proposed by the NIFS line.…”

Section: Zoning Of the Slope At Riskmentioning

confidence: 99%

Overview of Retrogressive Landslide Risk Analysis in Sensitive Clay Slope

et al. 2020

View full text Add to dashboard Cite

Sensitive clays are known for producing retrogressive landslides, also called spread or flowslides. The key characteristics associated with the occurrence of these landslides on a sensitive clay slope must be assessed, and the potential retrogressive distance must be evaluated. Common risk analysis methods include empirical methods for estimating the distance of potential retrogression, analytical limit equilibrium methods, numerical modelling methods using the strength reduction technique, and the integration of a progressive failure mechanism into numerical methods. Methods developed for zoning purposes in Norway and Quebec provide conservative results in most cases, even if they don’t cover the worst cases scenario. A flowslide can be partially analysed using analytical limit equilibrium methods and numerical methods having strength reduction factor tools. Numerical modelling of progressive failure mechanisms using numerical methods can define the critical parameters of spread-type landslides, such as critical unloading and the retrogression distance of the failure. Continuous improvements to the large-deformation numerical modeling approach allow its application to all types of sensitive clay landslides.

show abstract

Section: Zoning Of the Slope At Riskmentioning

confidence: 99%

Overview of Retrogressive Landslide Risk Analysis in Sensitive Clay Slope

et al. 2020

View full text Add to dashboard Cite

show abstract

“…To minimise the degree of destruction that these landslides can cause, a better understanding of their behaviour in sensitive clays is of great importance. Many efforts have so far been made in this respect, for instance through theoretical analysis, experimental tests, and empirical statistics . In these studies, special emphasis was typically given to the triggering mechanisms, the evolution processes, and the retrogression run‐out distances.…”

Section: Introductionmentioning

confidence: 99%

Dynamic modelling of retrogressive landslides with emphasis on the role of clay sensitivity

Xue

Sloan

Oñate

2018

Num Anal Meth Geomechanics

View full text Add to dashboard Cite

This paper presents a detailed numerical study of the retrogressive failure of landslides in sensitive clays. The dynamic modelling of the landslides is carried out using a novel continuum approach, the particle finite element method, complemented with an elastoviscoplastic constitutive model. The multiwedge failure mode in the collapse is captured successfully, and the multiple retrogressive failures that have been widely observed in landslides in sensitive clays are reproduced with the failure mechanism, the kinematics, and the deposition being discussed in detail. Special attention has been paid to the role of the clay sensitivity on each retrogressive failure as well as on the final retrogression distance and the final run-out distance via parametric studies. Moreover, the effects of the viscosity of sensitive clays on the failure are also investigated for different clay sensitivities.

show abstract

Parametric Analysis of the Mobility of Debris from Flow Slides in Sensitive Clays

Turmel

Locat

et al. 2017

Landslides in Sensitive Clays

View full text Add to dashboard Cite

Runout of Landslides in Sensitive Clays

Cited by 10 publications

References 30 publications

Overview of Retrogressive Landslide Risk Analysis in Sensitive Clay Slope

Overview of Retrogressive Landslide Risk Analysis in Sensitive Clay Slope

Dynamic modelling of retrogressive landslides with emphasis on the role of clay sensitivity

Parametric Analysis of the Mobility of Debris from Flow Slides in Sensitive Clays

Contact Info

Product

Resources

About