Evaluating Kinematic Controls on Planar Translational Slope Failure Mechanisms Using Three-Dimensional Distinct Element Modelling

Brideau, Marc-André; Stead, Doug

doi:10.1007/s10706-012-9522-5

Cited by 34 publications

(28 citation statements)

References 26 publications

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“…This software has been successfully applied to landslide modelling by several authors as it allows representation of the full 3D geometry and the incorporation of discontinuities (Stead et al 2006;Yeung and Wong 2007;Brideau and Stead 2010;Kalenchuk 2010;Firpo et al 2011;Brideau and Stead 2012). An explicit time marching solution is used to simulate the response of discontinuous rock mass subjected to static or dynamic loading.…”

Section: Back Analysis Using 3d Distinct Element Modellingmentioning

confidence: 99%

Back Analysis of the 2014 San Leo Landslide Using Combined Terrestrial Laser Scanning and 3D Distinct Element Modelling

et al. 2015

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Landslides of the lateral spreading type, involving brittle geological units overlying ductile terrains, are a common occurrence in the sandstone and limestone plateaux of the northern Apennines of Italy. The edges of these plateaux are often the location of rapid landslide phenomena, such as rock slides, rock falls and topples. In this paper we present a back-analysis of a recent landslide (February 2014), involving the north-eastern sector of the San Leo rock slab (northern Apennines, Emilia-Romagna Region) which is a representative example of this type of phenomena. The aquifer hosted in the fractured slab, due to its relatively higher secondary permeability in comparison to the lower clayey units leads to the development of perennial and ephemeral springs at the contact between the two units. The related piping erosion phenomena, together with slope processes in the clayshales have led to the progressive undermining of the slab, eventually predisposing large-scale landslides. Stability analyses were conducted coupling Terrestrial Laser Scanning (TLS) and Distinct Element Methods (DEMs). TLS point clouds were analyzed to determine the pre-and post-failure geometry, the extension of the detachment area and the joint network characteristics. The block dimensions in the landslide deposit were mapped and used to infer the spacing of the discontinuities for insertion into the numerical model. Threedimensional distinct element simulations were conducted, with and without undermining of the rock slab. The analyses allowed an assessment of the role of the undermining, together with the presence of an almost vertical joint set, striking sub-parallel to the cliff orientation, on the development of the slope instability processes. Based on the TLS and on the numerical simulation results, an interpretation of the landslide mechanism is proposed.

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Section: Back Analysis Using 3d Distinct Element Modellingmentioning

confidence: 99%

Back Analysis of the 2014 San Leo Landslide Using Combined Terrestrial Laser Scanning and 3D Distinct Element Modelling

et al. 2015

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“…1) and aerial photographs and are located between two geological features : the Port-Daniel River fault to the west and an angular unconformity to the east, separating Silurian-Devonian sedimentary rock from Cambrian meta-sedimentary rock (Bourque and Lachambre 1980).…”

Section: Geomorphology Observationsmentioning

confidence: 99%

“…The cliff of Pierre-Loiselle Cove is cut into Silurian to Devonian sedimentary rock lying in angular unconformity on the Cambrian Maquereau group (Bourque and Lachambre 1980). The active rockslide is in the Anse-à-Pierre-Loiselle Formation (APL) described by Bourque and Lachambre (1980) as a transition unit between the sandstones of AnseCascon Formation and the limestones of La Vieille inférieure Formation (La Vinf).…”

Section: Geologymentioning

confidence: 99%

“…The active rockslide is in the Anse-à-Pierre-Loiselle Formation (APL) described by Bourque and Lachambre (1980) as a transition unit between the sandstones of AnseCascon Formation and the limestones of La Vieille inférieure Formation (La Vinf). The three formations are part of the Chaleurs Bay synclinorium.…”

Section: Geologymentioning

confidence: 99%

“…Geological map modified fromBourque and Lachambre (1980) drawn over the DEM and 2004 aerial photograph. The average dip and dip direction of the APL Fm is indicated.…”

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The anatomy of an active slide: the Gascons rockslide, Québec, Canada

et al. 2015

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A railroad crosses the coastal Gascons rockslide, in Quebec, Canada. This study improves the understanding of the rockslide's failure mechanism and post-failure behaviour responsible for the deformation in the railroad. The slide is an asymmetrical wedge failure of 410,000 m 3 , in rocks made up of centimetrescale beds of nodular calcilutite alternating with sandstones and limestone. The post-failure stage of the rockslide is characterised by continuous movement of blocks with speeds ranging from 6 to 110 mm/year. The main water table is just below the sliding surface, but precipitation and snowmelt can raise it above the sliding surface in the upper part of the slide. We propose a model for the rockslide, its failure mechanism, geometry and hydrogeology to provide a baseline for interpreting the near-real-time data collected since 2009.

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Structural control of bedrock river alignment and morphology in the Fraser Canyon, British Columbia, Canada

Curran,

Steelquist,

Larimer

et al. 2023

Earth Surf Processes Landf

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Many rivers worldwide follow faults because they exploit bedrock damage that occurs in fault zones. However, there has been no quantitative investigation of how closely rivers follow specific faults within a fault zone. Analysis of the Fraser River in southwestern British Columbia reveals the degree of alignment of individual bedrock‐bound canyon reaches with lineaments of the Fraser River Fault. The alignment of the river at the regional scale is controlled by the Fraser River Fault zone, but individual canyons align with subsidiary faults that are visible in elevation data or predicted by the geometry and kinematics of the main fault. We hypothesize canyon reaches that deviate from faults were shifted by large episodic sediment input, creating epigenetic canyons.

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Evaluating Kinematic Controls on Planar Translational Slope Failure Mechanisms Using Three-Dimensional Distinct Element Modelling

Cited by 34 publications

References 26 publications

Back Analysis of the 2014 San Leo Landslide Using Combined Terrestrial Laser Scanning and 3D Distinct Element Modelling

Back Analysis of the 2014 San Leo Landslide Using Combined Terrestrial Laser Scanning and 3D Distinct Element Modelling

The anatomy of an active slide: the Gascons rockslide, Québec, Canada

Structural control of bedrock river alignment and morphology in the Fraser Canyon, British Columbia, Canada

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