Academic literature on the topic 'Glissements de terrain induits par des séismes'
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Journal articles on the topic "Glissements de terrain induits par des séismes":
Billard, Armelle, Tatiana Muxart, Edward Derbyshire, Yves Egels, Michel Kasser, and Jingtaï Wang. "Glissements de terrain induits par les pluies dans les lœss de la Province de Gansou, Chine." Annales de Géographie 101, no. 567 (1992): 520–40. http://dx.doi.org/10.3406/geo.1992.21108.
Terrier, Monique Cécile, Anne Bialkowski, Claude Prepetit, Yves-Fritz Joseph, Didier Bertil, and Marcello De Michele. "Utilisation des images Pléiades dans le cadr du microzonage sismique de Port-au-Prince (Haïti) : application à l'étude géologique." Revue Française de Photogrammétrie et de Télédétection, no. 209 (January 29, 2015): 59–64. http://dx.doi.org/10.52638/rfpt.2015.105.
Fouache, Eric, Adrien Marchiel, Alain Rabaute, Stéphane Desruelles, Christian Gorini, Nicoletta Bianchi, Raphaël Kerverdo, and Sara Lafuerza. "Conséquences de la crue extrême du 2 octobre 2020 dans la vallée de la Roya (Alpes Maritimes) sur les réseaux de transport et de communication : leçons pour la reconstruction." Flux N° 132, no. 2 (August 18, 2023): 98–114. http://dx.doi.org/10.3917/flux1.132.0098.
Miner Fuentes, Yojana, and Juan Carlos Villagrán de León. "Los procesos de traslado forzado debido a desastres naturales. Sistematización de experiencias en Guatemala." Revista Trace, no. 56 (July 9, 2018): 88. http://dx.doi.org/10.22134/trace.56.2009.397.
Brooks, Gregory Robert. "An Integrated Stratigraphic Approach to Investigating Evidence of Paleoearthquakes in Lake Deposits of Eastern Canada." Geoscience Canada 42, no. 2 (April 10, 2015): 247. http://dx.doi.org/10.12789/geocanj.2014.41.063.
Dissertations / Theses on the topic "Glissements de terrain induits par des séismes":
Mita, Mara. "Assessment of seismic displacements of existing landslides through numerical modelling and simplified methods." Electronic Thesis or Diss., Université Gustave Eiffel, 2023. http://www.theses.fr/2023UEFL2075.
Landslides are common secondary effects related to earthquakes which can be responsible for greater damages than the ground shaking alone. Predicting these phenomena is therefore essential for risk management in seismic regions. Nowadays, landslides permanent co-seismic displacements are assessed by the traditional « rigid-sliding block » method proposed by Newmark (1965). Despite its limitations, this method has two advantages: i) relatively short computation times, ii) compatibility with GIS software for regional-scale analyses. Alternatively, more complex numerical analyses can be performed to simulate seismic waves propagation into slopes and related effects. However, due to their longer computation times, their use is usually limited to slope-scale analyses. This study aims at better understanding in which conditions (i.e. combinations of introduced relevant parameters), analytical and numerical methods predict different landslides earthquake-induced displacements. At this regard, 216 2D landslide prototypes were designed by combining geometrical and geotechnical parameters inferred by statistical analysis on data collected by literature review. Landslide prototypes were forced by 17 signals with constant Arias Intensity (AI ~ 0.1 m/s) and variable mean period. Results allowed defining a preliminary Random Forest model to predict a priori, the expected difference between displacements by the two methods. Analysis of results allowed: i) identifying parameters affecting displacement variation according to the two methods, ii) concluding that in here considered AI level, computed displacements differences are negligible in most of the cases
Bouissou, Stéphane. "Approche de l'instabilité sismique par l'analyse du glissement saccadé avec un analogue de roche (PMMA)." Montpellier 2, 1998. http://www.theses.fr/1998MON20079.
Rodrigues, Afonso Dias Ana Sofia. "The effect of vegetation on slope stability of shallow pyroclastic soil covers." Thesis, Montpellier, 2019. http://www.theses.fr/2019MONTG002/document.
The effect of the local vegetation, composed of cultivated Castanea sativa, on slope stability was investigated on a test site in Mount Faito (Campania, Southern Italy). In Campania, shallow pyroclastic soil covers are susceptible to landslides triggered by rainfall. Prolonged rainfall periods followed by extreme short-term rainfall events trigger fast moving and highly destructive landslides in road cuts and pyroclastic scarps on rocky cliffs in the areas surrounding the Vesuvius volcano.Undisturbed pyroclastic soil samples containing roots of mature C. sativa were used for hydraulic characterization through an extensive set of laboratory experiments. Saturated permeability, evaporation and imbibition response, water content for high suction ranges, and the root dry biomass were determined.The presence of roots increased the hydraulic permeability by one order of magnitude in the most surficial soil (10-7 to 10-6 m s-1) and decreased the air-entry value of the water retention curves (6 to 4 kPa). The variability of soil permeability among soil layers was identified as conditioning of the groundwater flow with regard to the speed of the wetting front movement and generation of positive pore-water pressures within the soil profile. The calibration of hysteretic model to characterize natural pyroclastic soil provided a more approximate manner of modelling in situ hydraulic responses. A good agreement between the model and the field observations was obtained.Field monitoring was performed with the intent of showing that the distribution of roots of C. sativa is associated to the groundwater regime. The spatial and vertical distribution of root density and traits were quantified for C. sativa roots collected from several boreholes performed in Mount Faito. Minimum suction, minimum water content and minimum gradient (indicative of downward water flow), were monitored throughout the year and related to root distribution and spatial distribution of trees. An increasing root density was found to be associated to lower values of suction and higher gradients of infiltration, which can potentially have a negative influence of the slope stability.A modelling investigation on the mechanical reinforcement of soil by tree roots allowed us to understand the importance of hydraulic and mechanic components on the stability of a slope. Roots increase greatly the shear strength of soil (up to 25.8 kPa) through mechanical reinforcement and consequently, the safety factor of the slope increased significantly. Considering the root reinforcement in the estimation of potential failure surfaces safety factor showed that the weakest failure surface was found at 2.2 m, where the root reinforcement was 1.3 kPa, instead of 0.9 m without the root reinforcement of 13.8 kPa. The weakest failure surface found was in agreement with the failure surfaces observed from previous landslides. The test site did not present the characteristics of a landslide triggering area. The slope angle of the landslide triggering areas (35° to 45°) can easily exceed the soil friction angle (36.5° to 38.5°) and the hydraulic effect would not be enough to guarantee the stability of the slope during the wet season (0 to 10 kPa). However, the root reinforcement was estimated to be able to sustain the slopes until an angle of 42°.Therefore, the presence of tree roots was found to affect hydraulically and mechanically stability of pyroclastic soil covers. Such conclusions may be extended to the areas of Campania where C. sativa plantations are present. The hydraulic effect of vegetation was greatly compensated by the mechanical reinforcement of roots