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Dissertations / Theses on the topic 'Fractured rock massif'

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Published: 7 July 2024

Last updated: 31 July 2025

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1

El, Khattabi Mohamed. "Etude et gestion des risques liés aux glissements de terrain en milieu urbain : application à la ville d'Al Hoceima (Nord du Maroc)." Electronic Thesis or Diss., Université de Lille (2022-....), 2023. http://www.theses.fr/2023ULILN047.

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Les glissements de terrain représentent des phénomènes extrêmement dangereux, influencés par divers paramètres et critères fréquemment observés dans différents endroits dans le monde. Leur gestion se révèle complexe, d'autant plus s'ils sont localisés en milieu urbain, en raison des risques qu'ils présentent pour la population et les habitations, ainsi que de la difficulté des mesures correctives à mettre en place. Cette thèse se concentre sur l'étude des glissements de terrain appliquée à la ville d'Al Hoceima, au nord du Maroc. L'objectif est d'analyser leurs origines ou leur réactivation, l

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2

SAVELY, JAMES PALMER. "PROBABILISTIC ANALYSIS OF FRACTURED ROCK MASSES." Diss., The University of Arizona, 1987. http://hdl.handle.net/10150/184249.

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Stability analysis of rock masses composed of small, discrete rock blocks that are in-place and interlocked should consider four components of failure: (1) Sliding between blocks. (2) Shearing through rock blocks. (3) Rolling blocks in a shear zone. (4) Crushing of rock blocks. Statistical rock mass description is used to define the characteristics of the rock blocks and the block assemblage. Clastic mechanics is one method of predicting stresses produced by the arrangement of rock blocks and the loading conditions. Failure begins at a point of maximum stress behind the slope. Progression of t

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3

Min, Ki-Bok. "Fractured Rock Masses as Equivalent Continua - A Numerical Study." Doctoral thesis, KTH, Land and Water Resources Engineering, 2004. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3742.

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<p>In this thesis, fractured rock masses are treated asequivalent continua for large-scale analyses of rockengineering projects. Systematic developments are made for thedetermination of equivalent mechanical and hydraulic propertiesof fractured rock masses using a hybrid discrete fracturenetwork - distinct element method (DFN-DEM) approach. Thedetermined equivalent properties are then used for a far-fieldfinite element analysis of the thermo-mechanical impacts on thestress, deformation and permeability of fractured rockssurrounding a hypothetical geological repository of nuclearwaste. The geol

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4

ALVARENGA, JULIO ERNESTO MACIAS. "COMPUTATIONAL ANALYSIS OF THE STABILITY OF FRACTURED ROCK MASSES." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 1997. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=1929@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O presente trabalho apresenta aplicações das técnicas de Relaxação Dinâmica e Análise Limite ao estudo da estabilidade de maciços rochosos fraturados. O maciço é modelado como um meio descontínuo formado por blocos rígidos com deformação concentrada nas juntas. A técnica de Relaxação Dinâmica é usada para a solução do problema de equilíbrio resultante, através do programa BLOCO. As expressões desenvolvidas para a matriz de rigidez tangente, usando o modelo de Barton & Bandis, foram implementadas no programa BLOCO. Exemplos

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5

Priscu, Doina Maria. "Double-porosity modelling of groundwater flow through fractured rock masses." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ37280.pdf.

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6

Abdallah, Ghassan. "La convection thermique dans les milieux fracturés : modélisation avec la méthode des éléments distincts." Vandoeuvre-les-Nancy, INPL, 1994. http://www.theses.fr/1994INPL126N.

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L’étude des phénomènes couplés thermo-hydro-mécaniques intéresse la communauté scientifique aujourd'hui confronté au problème du stockage des déchets. La modélisation est un outil essentiel pour prédire l'évolution complexe du milieu hôte et de ces déchets. Parmi les approches numériques existants, on distingue les approches de types éléments finis et les approches de type éléments distincts. Si la première, plus ancienne, a déjà donné lieu à de nombreux développement et applications, elle rend mal quelquefois la réalité du massif rocheux fracturé. Nous avons souhaité cette dernière approche e

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7

Baghbanan, Alireza. "Scale and Stress Effects on Hydro-Mechanical Properties of Fractured Rock Masses." Doctoral thesis, KTH, Teknisk geologi och geofysik, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4772.

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In this thesis, the effects of size and stress on permeability, deformability and strength of fractured rock masses are investigated. A comparison study was carried out to examine the effects of considering, or not considering, the correlation between distributions of fracture apertures and fracture trace lengths on the hydro-mechanical behavior of fractured rocks. The basic concepts used are the fundamental principles of the general theory of elasticity, Representative Elementary Volume (REV), the tensor of equivalent permeability, and the strength criteria of the fractured rocks. Due to the

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8

Saetta, Valeria. "Micro-seismicity and hydro-mechanics of fractured rock masses : experiments and numerical simulations." Vandoeuvre-les-Nancy, INPL, 2004. http://www.theses.fr/2004INPL039N.

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Un massif rocheux fracturé, dont le comportement géo-hydromécanique a été étudié depuis plusieurs années, a été instrumenté sismiquement. L'intérêt du site réside dans le fait qu'on peut induire artificiellement une charge hydraulique connue et mesurer des déplacements, des pressions hydrauliques sur plusieurs points significatifs. Les résultats des essais in-situ mettent en évidence l'existence d'une micro-sismicité induite par une variation de pression avec une grande repétitivité. A partir des résultats des essais in-situ, a été formulée l'hypothèse que l'activité micro-sismique est associé

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9

Styles, Thomas Daniel. "Numerical modelling and analysis of slope stability within fracture dominated rock masses." Thesis, University of Exeter, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.496103.

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Numerical modelling of rock slopes can involve a number and variety of techniques, the selection and requirement of which depends on the factors deemed to control the potential for Instability. This thesis presents a number of case studies involving slopes in fractured rock, encompassing a range of scales. The case study slopes have provided a means to question the way in which particular slope instabilities should be analysed. Currently there are few methods available for analysing the complex behaviour within slopes of fractured rock. A review of available techniques is given within this the

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10

Mehrapour, Mohammad Hadi, and Mohammad Hadi Mehrapour. "Development of a Failure Criterion for Rock Masses Having Non-Orthogonal Fracture Systems." Diss., The University of Arizona, 2017. http://hdl.handle.net/10150/625679.

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Two new three-dimensional rock mass strength criteria are developed in this dissertation by extending an existing rock mass strength criterion. These criteria incorporate the effects of the intermediate principal stress, minimum principal stress and the anisotropy resulting from these stresses acting on the fracture system. In addition, these criteria have the capability of capturing the anisotropic and scale dependent behavior of the jointed rock mass strength by incorporating the effect of fracture geometry through the fracture tensor components. Another significant feature of the new rock m

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11

Hamidi, Sahar [Verfasser]. "Numerical investigations of heat and mass transport in fractured porous rock masses / Sahar Hamidi." Bonn : Universitäts- und Landesbibliothek Bonn, 2019. http://d-nb.info/1177881721/34.

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12

Pérez, Carreras Adrià. "T-H-M coupling with large advection in fractured rock masses using zero-thickness interface elements." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/671102.

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The study of hydro-mechanical (HM) coupled problems in different areas of civil, environmental or petroleum engineering is common in literature, but the effect of a thermal field by means of the heat transport by a fluid through the discontinuities is not considered in the current tools of analysis, in which the effect of the temperature gradient between the fluids flowing through the discontinuities and the in-situ thermal state are not considered. In geomechanics modeling it is important to distinguish between the hydraulic behavior of the porous medium and that of the discontinuities, toge

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13

Min, Ki-Bok. "Determination of equivalent hydraulic and mechanical properties of fractured rock masses using the distinct element method." Licentiate thesis, KTH, Land and Water Resources Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1550.

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<p>The equivalent continuum approach uses equivalent propertiesof rock mass as the input data for a continuum analysis. Thisis a common modeling method used in the field of rock mechanicsand hydrogeology. However, there are still unresolvedquestions; how can the equivalent properties be determined andis the equivalent continuum approach suitable for modeling thediscontinuous fractured rock mass.</p><p>The purpose of this paper is to establish a methodology todetermine the equivalent hydraulic and mechanical properties offractured rock masses by explicit representations of stochasticfracture sy

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14

Bouteca, Maurice. "Fracturation hydraulique calcul de propagation d'une fracture induite dans un massif rocheux /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37603363t.

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15

Tran, Thi Thu Hang. "Combined application of structural geology, the mechanics of discrete media and the analysis of in situ stresses and displacements for the modelling of mechanical behaviour of fractured rock masses." Thesis, Montpellier 2, 2013. http://www.theses.fr/2013MON20018/document.

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Pour étudier le comportement mécanique des massifs rocheux, en prenant en compte le réseau des discontinuités au sein de la roche intacte, cette recherche a pour objectif la représentation du massif par des modèles géométriques basés sur des relevés de terrain et l'analyse de ces modèles par l'utilisation d'outils informatiques adaptés pour les milieux granulaires. Le premier chapitre fait l'état de l'art des roches fracturées, des méthodes numériques de la mécanique des roches et des approches du calcul de structure d'un tunnel. Ces études conduisent à la proposition d'une méthodologie depuis

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16

Jeanpert, Julie. "Structure et fonctionnement hydrogéologiques des massifs de péridotites de Nouvelle-Calédonie." Thesis, La Réunion, 2017. http://www.theses.fr/2017LARE0047/document.

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Le fonctionnement et la structure hydrogéologiques des aquifères de socle des granites et des gneiss sont aujourd'hui relativement bien compris. En revanche, dans cet ensemble, les aquifères dans les péridotites sont très peu étudiés et mal compris. Dans ce contexte, les massifs obductés de Nouvelle-Calédonie présentent un laboratoire naturel exceptionnel pour améliorer la connaissance de cet hydrosystème original en contexte tropical. Ainsi l'objectif du présent travail de thèse est d'approfondir la connaissance de la structure et du fonctionnement hydrogéologiques de ces massifs. L'analyse p

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17

Gaudreault, Michel. "Analyse numérique des phénomenes mécaniques et hydrauliques en périphérie d'excavations en massifs rocheux fractures : le cas de la mine niobec, St-Honore (Québec) /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1996. http://theses.uqac.ca.

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18

Souley, Mountaka. "Modélisation des massifs rocheux fracturés par la méthode des éléments distincts : influence de la loi de comportement des discontinuités sur la stabilité des ouvrages." Vandoeuvre-les-Nancy, INPL, 1993. http://www.theses.fr/1993INPL091N.

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Le comportement mécanique des massifs rocheux fracturés est énormément et quelquefois dramatiquement, affecté par le comportement des discontinuités présentes dans les massifs. L'influence des discontinuités sur le comportement mécanique des masses rocheuses a été démontrée par de nombreuses études expérimentales et numériques. Les joints sont à l’origine des ruptures ou instabilités observées dans les structures du génie civil et leur comportement dépend de nombreux facteurs. Par conséquent, les modèles de comportement des discontinuités et les paramètres associés jouent un rôle essentiel dan

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19

Loiseau, Philippe. "Etude structurale et geostatistique des gneiss de la region du cezallier : modelisation tridimensionnelle de reseaux de fractures, application a l'ecoulement des fluides." Orléans, 1987. http://www.theses.fr/1987ORLE2055.

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L'etat de fracturation d'un massif cristallin par l'intermediaire de la modelisation est apprehende et passe par des etapes d'acquisition des donnees qui se font en surface et en profondeur, ainsi que par des etapes d'analyse suivant le parametre choisi. L'hydrogeologie des milieux fissures et l'une des applications aux modelisations de champs de fracture. On peut ainsi mettre en evidence un comportement discontinu du flux

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20

Bethencourt, Lorine. "Etude des bactéries oxydantes du fer dans les aquifères hétérogènes : rôle dans le fonctionnement biogéochimique des zones d'interface." Thesis, Rennes 1, 2019. http://www.theses.fr/2019REN1B025.

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Les bactéries de la famille des Gallionellaceae (β-proteobacteria) oxydent le fer dissous à pH neutre pour alimenter leur métabolisme énergétique. Ces bactéries sont endémiques des habitats microaérobies, où elles peuvent rivaliser avec l'oxydation abiotique rapide du fer par l'oxygène. Elles sont ainsi retrouvées généralement dans les zones d’interfaces entre l’atmosphère et un compartiment anoxique riche en fer, tel qu’une résurgence d’eau souterraine. Pourtant ces cinq dernières années, de plus en plus d’études attestent de la présence des Gallionellaceae en profondeur dans certains milieux

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21

García, Gian Franco Napa. "Análise de risco de obras subterrâneas em maciços rochosos fraturados." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-18082015-105621/.

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Nesta tese o autor estabelece um método sistemático de quantificação de risco em obras subterrâneas em maciço rochoso fraturado utilizando de maneira eficiente conceitos de confiabilidade estrutural. O método é aplicado a um caso de estudo real da caverna da Usina Hidrelétrica Paulo Afonso IV, UHE-PAIV. Adicionalmente, um estudo de otimização de projeto com base em risco quantitativo também é apresentado para mostrar as potencialidades do método. A estimativa do risco foi realizada de acordo com as recomendações da Organização de Auxílio contra Desastres das Nações Unidas, UNDRO, onde o risco

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Oliva, Victor Hugo Gaitán. "Propagação de fraturas em juntas rugosas não-persistentes." Universidade de São Paulo, 2005. http://www.teses.usp.br/teses/disponiveis/18/18132/tde-01032005-172004/.

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O presente trabalho foi realizado para estudar o efeito sobre a propagação de fraturas em juntas não-persistentes quando existe uma variação da rugosidade nas juntas. Para esta abordagem, foram analisados os modos de coalescência, o ângulo de início das fraturas, a resistência à compressão e deformação de modelos de argamassa contendo juntas não-persistentes e submetidos a estados biaxiais de tensão. Na literatura especializada encontram-se vários trabalhos que estudam o comportamento de juntas lisas não-persistentes. Infelizmente, este tipo de juntas não leva em conta os efeitos da dilatância

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23

Jaunat, Jessy. "Caractérisation des écoulements souterrains en milieu fissuré par approche couplée hydrologie-géochimie-hydrodynamisme : application au massif de l'Ursuya (Pays Basque, France)." Phd thesis, Université Michel de Montaigne - Bordeaux III, 2012. http://tel.archives-ouvertes.fr/tel-00778427.

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Les aquifères fracturés sont un enjeu majeur de l'hydrogéologie actuelle. Ils constituent une ressource essentielle pour de nombreuses populations. Le massif de l'Ursuya (France, 64), en est une illustration. Constitué de formations métamorphiques fracturées, il est intensément exploité pour l'alimentation en eau potable. Une approche multidisciplinaire a permis la compréhension du fonctionnement de ce système. Les résultats obtenus constituent une avancée dans la connaissance des aquifères discontinus et offrent des pistes pour une gestion raisonnée de cette ressource.Le signal d'entrée est c

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24

宋政輝, Cheng-hui Sung, and 宋政輝. "Investigation Technology for fracture parameters and permeability of fractured rock masses." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/7mbr6q.

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碩士<br>國立臺北科技大學<br>資源工程研究所<br>100<br>Hydraulic models play the key roles for description of underground water flow and solute transport, and are also crucial for the development and application of water resources and underground. The natural rock include many discontinuities like crevasses, beddings, joints and schistosities, which cause the difficulty in simulation and analysis and even further difficulties of engineering design and construction resulting in its mechanical and hydraulic behaviors present heterogeneity and anisotropy. Therefore, how to get the hydrogeological characteristics of

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Fadakar, Alghalandis Younes. "Stochastic modelling of fractures in rock masses." Thesis, 2014. http://hdl.handle.net/2440/92338.

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Fracture and fracture network modelling is a multi-disciplinary research area. Although the literature in general is significant, many research challenges remain. The complex geometry and topology of realistic fracture networks largely determine the static and dynamic mechanical properties of rock. In applications to hot dry rock geothermal reservoirs it is not possible to observe or measure fractures directly on any scale and the only data available are indirect measurements, such as seismic activity generated by hydraulic fracture stimulation. The lack of direct data and the complexities of

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Zheng, Hua-En, and 鄭華恩. "Mechanical behaviors of fractured rock masses based on synthetic rock mass simulation." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/ge7cn3.

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碩士<br>國立中央大學<br>土木工程學系<br>107<br>This paper presents the mechanical behaviors of fractured rock masses for various geometrical conditions by using the Particle Flow Code (PFC3D). A specified rock mass size is assigned by software FracMan to generate discrete fracture network (DFN) then the fracture data were input into smooth joint model (SJM), combing with bonded particle model (BPM) by PFC3D to produce synthetic rock mass (SRM). SRM was used to simulate the mechanical behaviors based on macroscopically isotropic/anisotropic rock under triaxial test, calculating major principal stress, young'

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27

"Computational analysis of the stability of fractured rock masses." Tese, MAXWELL, 1997. http://www.maxwell.lambda.ele.puc-rio.br/cgi-bin/db2www/PRG_0991.D2W/SHOW?Cont=1929:pt&Mat=&Sys=&Nr=&Fun=&CdLinPrg=pt.

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Chiang, Chih-Wei, and 江誌偉. "Study on discrete seepage model for fractured rock masses." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/35679182916854951015.

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碩士<br>國立臺灣大學<br>土木工程學研究所<br>96<br>It is crucial to well know on the behaviors of rock masses for underground utilization, such as the tunnel, radioactive waste material store and the liquefied natural gas stores etc., all need to build the appropriate model for the description of behaviors of rock masses, so as to estimate, analyze, predict or control all sorts of project behaviors. Traditionally, the behavior of rock masses can be described specifically in accordance with the characteristic of handling problem such as thermal field, flow field, mechanical field or chemical field. However, the

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Su, Chiou-Hua, and 蘇秋樺. "Numerical modelling of wellbore stress in fractured rock masses." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/73714710887245901956.

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Farichah, Himatul, and 法麗佳. "Representative Elementary Volume of P32 and Hydraulic Conductivity of Fractured Rock masses." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/u97928.

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碩士<br>國立中央大學<br>土木工程學系<br>105<br>This study presents the representative elementary volume (REV) of P32 (fracture intensity) and hydraulic conductivity of fractured rock mass. Discrete fracture network (DFN) generated by FracMan is adopted to create rock mass models. A series of parametric studies including dip angle, dip direction, Fisher constant κ, size of rock mass model, shape of rock mass model, specimen volume, fracture diameter, and P32 were investigated to study the REV of P32. Based on the results of the parametric studies, a novel equation to quantify the COV (Coefficient of variance

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HSU, CHE JUI, and 許哲睿. "The uncertainty of fracture intensity and mechanical properties of rock masses." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/x8a6av.

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碩士<br>國立中央大學<br>土木工程學系<br>105<br>This paper presents the uncertainties of geometrical and mechanical properties based on macroscopically isotropic synthetic rock mass. In the geometrical section, the analytical approach used the probability of whether each fracture center point would be sampled or not. The coefficient of variance of P30 could then be calculated by binomial theorem. According to the relation between P30 and P32, the coefficient of variance of P32 could also be yielded. To verify the analytical solution, FracMan was used to generate the rock mass model and discrete fracture netw

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Deng, Bor-Wei, and 鄧博維. "The Relationships between Characteristics of Discontinuities and the Hydraulic Conductivity in Fractured Rock Masses - A Case Study of jointed Andesite Rocks in Lan-Yu Site." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/92246211745468931226.

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博士<br>國立成功大學<br>資源工程學系<br>85<br>ABSTRACT Fractures play an important role both in the engineering behaviors and groundwater movement of rock masses. A description of the fracture geometry pattern is a primary requirement to assess the hydraulic and mechanical behaviors of jointed rock masses. To enhance the reliability of fracture data, this paper firstly proposes some analytical techniques based on statistical approaches to characterize and analyze the variability of

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