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Academic literature on the topic 'Pentes (Mécanique des sols) – Stabilité – Modèles mathématiques'
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Dissertations / Theses on the topic "Pentes (Mécanique des sols) – Stabilité – Modèles mathématiques"
Laflamme, Amélie-Julie. "Analyse intégrée de la stabilité des pentes de la fosse portage du projet minier Meadowbank." Thesis, Université Laval, 2010. http://www.theses.ulaval.ca/2010/27358/27358.pdf.
Full textAbdelhedi, Anouar. "Modélisation de l'effet de groupe dans le clouage des pentes." Paris 6, 1986. http://www.theses.fr/1986PA066042.
Full textZheng, Lifeng. "Contribution à la modélisation du comportement différé du massif rocheux fracturé." Thesis, Lille 1, 2014. http://www.theses.fr/2014LIL10060/document.
Full textShort-term and long-term stability are two important aspects in analyzing slope stability. The objective of this study is to propose the numerical models to simulate the short and long-term mechanical behaviour of rock matrix and rock joint. For rock matrix, one elasto-damage model which takes both the compressive and tensile situations into account is employed. One parameter is introduced to emphasize the influence of confining pressures. And then one creep model for rock matrix which considering the damage parameter as a time-dependent variable is proposed. The simulation results show great agreement with experimental results. Generally, rock joints are the most fragile part in rock structures. For rock joint, the asperity of joint surface is represented by a parameter JRC. This parameter is related to the friction angle, and then affects the shear stiffness of joint. In this work, a constitutive model is employed based on this theory, and then the parameter JRC is proposed to be a time-dependent variable, which represents the graduate degradation of joint asperity with time passage. One simulation is performed and verified that this model is capable to describe creep phenomena. The extended finite element (XFEM) theory is introduced and applied in the joint model to exactly describe the real condition of joint. A simulation of one complicated structure is performed at last to verify the simulating ability of these models
Liu, Zaobao. "Évaluation et amélioration des modèles numériques pour l'analyse de la stabilité des pentes." Thesis, Lille 1, 2013. http://www.theses.fr/2013LIL10018/document.
Full textSlope failures and rock burst, which are two typical types of geological hazards, create tremendous economic damages and cause massive losses to the health of domestic humans or animals every year throughout the world. The severe situation implies that they are still in need to be further studied despite the fact that they have been discussed for a long time. The present work is devoted to presenting the analysis of slope failures and rock burst using some computational intelligent models with modifications and improvements. Then landslide, a common type of slope failure, is analyzed for time occurrence prediction using the Gaussian Process by means of field-observed displacement series. After that, the problem of slope stability evaluation is discussed using the strategy of relevance vector machine (RVM) with adaptive hyper-parameter. An iteration approach is presented to find optimal hyper-parameter values in this chapter. Afterwards, the comprehensive evaluation of slope stability is carried out with the cloud model (CM) and weighted analytical hierarchy process (WAHP) closely related to the left abutment slope of Jinping 1 Hydropower Station, southwest of China. Finally, prediction of rock burst classification is engaged using the cloud models synthesized with the attribution weights on the basis of 164 rock burst cases. In each modeling of the associated problems, comparisons are given on the performance of each strategy as well as some evaluations
Lopez-Caballero, Fernando. "Influence du comportement non linéaire du sol sur les mouvements sismiques induits dans des géo-structures." Châtenay-Malabry, Ecole centrale de Paris, 2003. http://www.theses.fr/2003ECAP0926.
Full textVentura, Diaz Pablo. "Modélisation du talus nord est de la Fosse Sainte Marie : (H.B.C.M. Unité d'Exploitation Tarn, Mine de Carmaux." Vandoeuvre-les-Nancy, INPL, 1996. http://www.theses.fr/1996INPL114N.
Full textThe slope stability is the critical problem in open cast mine design. At Carmaux open pit coal mine, situated in south-western France, exploted by HBCM, sorne pit zones present local sliding risks which have been increased by pit deepening. One of these risky zones is the slope situated on the northeastern side of Sainte-Marie open pit. Description of slope monitoring and control methods were done before modelling by the limit equilibrium method. Further modelling by the distincts elements method with UDEC twodimensional program was performed. Later, modelling results were compared to the instrumental mesuring values. Finally, additional excavation of the pit was simulated ta asses and determine slope stability behaviour in the case it is eventually done. Analysis results indicate global slope stability
Causse, Lionel. "Analyse et modélisation des interactions géomécaniques entre tunnels et versants instables." Thesis, Paris, ENMP, 2015. http://www.theses.fr/2015ENMP0006/document.
Full textTunnels and unstable slopesABSTRACT: The slope instabilities are partly responsible for the appearance of disorders or reactivation of previous disorders in old shallow tunnel structures. However, it is necessary to understand what results from these interaction contexts and what is due solely to rheological aging of these old structures. Retro-analyzes have led to the consideration of different situations of tunnels entering a hillslope: tunnel entering a slope (tunnel head), tunnel oblique to the slope or shallow tunnel parallel to the slope. Identified pathologies of structures vary depending on these situations. In this thesis, different mechanisms responsible for damage to structures were studied in the case of a shallow tunnel parallel to a slope. For this, a part of the research has focused on the influence factors through a series of parametric numerical approaches. Some are related to the elevation of the tunnel in the slope and its distance from the free surface of the slope. Then are highlighted influencing factors related to geomorphological characteristics of the hillslope and its natural evolution as well as factors related to the construction method of the tunnel. In the second part, case study back-analyzes have characterized different contexts of interaction and pathologies of old tunnels concerned. Numerical simulations were performed to illustrate the behaviour of these structures and explain tunnel lining damages. Finally in the third part, a methodology for analyzing different contexts of interaction between old tunnels and unstable slopes has been established, leading to redefine the concept of geotechnical influenced zone in this situation
Paul, Anne. "Modélisation numérique des déformations d'un édifice volcanique : applications au Mont St Helens." Grenoble 1, 1986. http://www.theses.fr/1986GRE10006.
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