Relevant bibliographies by topics / Argillaceous rocks

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  3. Books
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Academic literature on the topic 'Argillaceous rocks'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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Journal articles on the topic "Argillaceous rocks"

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Yang, Yu-chuan, Jia-wen Zhou, Fu-gang Xu, and Hui-ge Xing. "An Experimental Study on the Water-Induced Strength Reduction in Zigong Argillaceous Siltstone with Different Degree of Weathering." Advances in Materials Science and Engineering 2016 (2016): 1–12. http://dx.doi.org/10.1155/2016/4956986.

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The water-softening property of soft rocks is a key problem in geotechnical engineering. A typical red-bed soft rock (the Zigong argillaceous siltstones) with different weathering degree is selected as an example to study the water-softening property and the influence of degree of weathering. A series of mechanical and microstructure tests are carried out to analyze the weathering characteristics and mechanism of the Zigong argillaceous siltstones. The results of mechanical experiments reveal that the water content and the weathering degree of rock specimens both have a weakening effect on the compressive and shear strengths. According to the results of present microstructure tests, the mechanical properties of the Zigong argillaceous siltstones are closely correlated with their physical properties, including internal microstructure and material composition for highly weathered rocks or moderately weathered rocks (in both natural and saturation conditions). Finally, experimental results indicate that the changes of microstructure and internal materials are two main factors that influence rock strength parameters after contacting with water and that these properties reflect the rock weathering degree. In a word, when red-bed soft rocks are encountered in geotechnical engineering, special attention should be paid to presence of water.
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Antonov, Dimitar, Madlena Tsvetkova, and Doncho Karastanev. "Preliminary modelling of radionuclide migration in the argillaceous sediments of the Sumer Formation (Northwestern Bulgaria)." Geologica Balcanica 49, no. 3 (December 2020): 13–18. http://dx.doi.org/10.52321/geolbalc.49.3.13.

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In Bulgaria, from the preliminary analyses performed for site selection of deep geological disposal of high-level waste (HLW) and spent fuel (SF), it was concluded that the most promising host rocks are the argillaceous sediments of the Sumer Formation (Lower Cretaceous), situated in the Western Fore-Balkan Mts. The present paper aims to compare the transport of three major radionuclides from a hypothetical radioactive waste disposal facility, which incorporates an engineering barrier of bentonite into the argillaceous (marl) medium. The simulations were performed by using HYDRUS-1D computer programme. The results are used for a preliminary estimation of argillaceous sediments as a host rock for geological disposal of HLW.
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Wang, Yu, and Jian Lin Li. "Investigation on Shear Creep Mechanical Properties of Soft Rock." Advanced Materials Research 261-263 (May 2011): 1024–28. http://dx.doi.org/10.4028/www.scientific.net/amr.261-263.1024.

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The construction of slope or underground engineering often encounters soft rocks, which control the stability of rock engineering, with obvious characteristics of rheology. Under step load conditon, the shear creep test of argillaceous siltstone is performed by using the RMT150c rock and soil mechanics testing machine. Testing results show that the amount of creep deformation for argillaceous siltstone is big enough, which should be taken into consideration for analysis of stability or design of slope or underground engineering. Based on testing results, the long-term shear strength parameters are determined to provide theory basis for engineering survey and design.
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Meng, Bo, Hongwen Jing, Wenxin Zhu, and Haijian Su. "Influences of Saturation and Wetting-Drying Cycle on Mechanical Performances of Argillaceous Limestones from Liupanshan Tunnel, China." Advances in Materials Science and Engineering 2019 (August 8, 2019): 1–10. http://dx.doi.org/10.1155/2019/9236172.

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Water-rock interaction is a vital factor to affect the stabilities of rock projects. This paper conducted a series of experiments on argillaceous limestones to investigate the influences of saturation and wetting-drying cycle on the physical and mechanical performances of rocks. The results show that the increasing saturation increases the dissolution of clay minerals and lubrication among mineral grains, resulting in an obvious reduction effect on the strength and deformation performances of argillaceous limestones. Wetting-drying cycle increases the porosity and changes the pore structure of argillaceous limestones, leading to the pore transformation from small pore (0.01∼0.1 μm) to relatively large pore (0.1∼1.0 μm). Both the physical and mechanical performances of argillaceous limestones are weakened by the wetting-drying cycle. Besides, the variation process of the physical and mechanical parameters, including mass loss, density, ultrasonic velocity, compression strength, peak strain, elasticity modulus, and secant modulus, can be divided into two stages: 0∼6th wetting-drying cycle, gently changing, and 6th∼12th wetting-drying cycle, drastically changing. The whole change process of these physical and mechanical parameters with the increase in the wetting-drying cycle number can be expressed with the exponential function in general.
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Pujar, Anant G., A. Sreenivasa, and Ajaykumar N. Asode. "Petrography and Provenance Study of South-Central Part of Kaladgi Basin, Belgaum, Karnataka, India." International Journal of Economic and Environmental Geology 11, no. 1 (July 7, 2020): 108–12. http://dx.doi.org/10.46660/ijeeg.vol11.iss1.2020.421.

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The area under investigation covers the south-central part of Kaladgi series comprising of sedimentary rocks, mainly quartzarenites. From the geological point of view the study area comprises southcentral part of Kaladgi basin covering around 54 km2 which encompasses rocky hills of moderate height, showing three types of facies i.e., argillaceous, arenaceous and rudaceous. Among these three, arenaceous facies is more prominent in the area. These sedimentary rocks rest unconformably over gneisses. Detailed study of the rocks exposed are done by studying the petrological aspects of the rock samples which were subjected to microscopic studies, bifurcating different minerals and counting each parameter of the minerals which is plotted in the QFR ternary diagram and further illustrating the tectonic provenance of the area. Present work mainly focuses on the studies related to petrological, diagenesis and provenance of the study area where the rocks exposed in the vicinity are quartz arenites indicating that these sediments were deposited in a riverine condition.
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Pujar, Anant G., A. Sreenivasa, and Ajaykumar N. Asode. "Petrography and Provenance Study of South-Central Part of Kaladgi Basin, Belgaum, Karnataka, India." International Journal of Economic and Environmental Geology 11, no. 1 (July 7, 2020): 108–12. http://dx.doi.org/10.46660/ojs.v11i1.421.

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The area under investigation covers the south-central part of Kaladgi series comprising of sedimentary rocks, mainly quartzarenites. From the geological point of view the study area comprises southcentral part of Kaladgi basin covering around 54 km2 which encompasses rocky hills of moderate height, showing three types of facies i.e., argillaceous, arenaceous and rudaceous. Among these three, arenaceous facies is more prominent in the area. These sedimentary rocks rest unconformably over gneisses. Detailed study of the rocks exposed are done by studying the petrological aspects of the rock samples which were subjected to microscopic studies, bifurcating different minerals and counting each parameter of the minerals which is plotted in the QFR ternary diagram and further illustrating the tectonic provenance of the area. Present work mainly focuses on the studies related to petrological, diagenesis and provenance of the study area where the rocks exposed in the vicinity are quartz arenites indicating that these sediments were deposited in a riverine condition.
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Degueldre, Claude, and Veerle Cloet. "Pore water colloid properties in argillaceous sedimentary rocks." Science of The Total Environment 569-570 (November 2016): 423–33. http://dx.doi.org/10.1016/j.scitotenv.2016.06.073.

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AOYAGI, KOICHI, GEORGE V. CHILINGARIAN, and T. F. YEN. "Clay Mineral Diagenesis in Argillaceous Sediments and Rocks." Energy Sources 9, no. 2 (January 1987): 99–109. http://dx.doi.org/10.1080/00908318708908687.

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Fabre, Géraldine, and Frédéric Pellet. "Creep and time-dependent damage in argillaceous rocks." International Journal of Rock Mechanics and Mining Sciences 43, no. 6 (September 2006): 950–60. http://dx.doi.org/10.1016/j.ijrmms.2006.02.004.

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Sokolov, V. N., and Neal R. O'Brien. "A fabric classification of argillaceous rocks, sediments, soils." Applied Clay Science 5, no. 4 (December 1990): 353–60. http://dx.doi.org/10.1016/0169-1317(90)90030-s.

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Dissertations / Theses on the topic "Argillaceous rocks"

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Mánica, Malcom Miguel Ángel. "Analysis of underground excavations in argillaceous hard soils : weak rocks." Doctoral thesis, Universitat Politècnica de Catalunya, 2018. http://hdl.handle.net/10803/663452.

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Materiales arcillosos rígidos, que se encuentran en la zona de transición entre suelos duros y rocas blandas, están siendo considerados actualmente en varios países como la roca huésped para el almacenamiento geológico profundo de residuos nucleares de alta actividad y larga vida. Esta posibilidad a derivado en la construcción de laboratorios de investigación subterráneos (LIS), excavados en estos materiales arcillosos rígidos, para estudiar su comportamiento bajo condiciones reales de trabajo. Entre los diferentes aspectos estudiados en los LIS, el comportamiento hidromecánico de la roca huésped es el más relevante para la presente investigación. Observaciones in situ han revelado que las excavaciones inducen daño alrededor de los túneles, en la forma de redes de fracturas, contenidas dentro de una zona llamada la zona de daño de la excavación (ZDE). La ZDE se ha identificado como una de las principales causas afectando el comportamiento de las excavaciones. En este contexto, el principal objetivo de la presente investigación es la simulación numérica del comportamiento hidromecánico de excavaciones experimentales llevadas a cabo en el LIS Meuse/Haute-Marne (Francia). Para lograrlo, se desarrolló un modelo constitutivo para caracterizar la roca huésped. El modelado de estos materiales es una tarea desafiante. Estos materiales exhiben características más propias de los suelos como considerables deformaciones plásticas, dependencia con la velocidad de carga, y creep, aunque también muestran características más típicas de las rocas como un considerable reblandecimiento y deformaciones plásticas localizadas. Además, debido a su origen sedimentario, también exhiben anisotropía en propiedades como su rigidez, resistencia, y permeabilidad. Se prestó especial atención a la reproducción de la ZDE y, por lo tanto, a la simulación objetiva de deformaciones localizadas; se empleó un enfoque no local para la regularización del continuo, el cual evita la dependencia con la malla empleada. Los resultados obtenidos proporcionan importantes conclusiones respecto al comportamiento hidromecánico de estos materiales arcillosos rígidos, e indican los principales aspectos que afectan la respuesta de las excavaciones subterráneas. En particular, se demuestra la importancia de la ZDE.
Stiff clayey materials, lying in the transition between hard soils and weak rocks, are being currently considered in several countries as possible host medium for deep geological disposal of high active and long-lived nuclear waste. This possibility has led to the construction of underground research laboratories (URL), excavated in these indurated clayey materials, to study their behaviour under real working conditions. Among the very different topics addressed in the URLs, the hydromechanical behaviour of the host rock is the one that most concerns the present research. In situ observations have revealed that excavation operations induce damage around the galleries, in the form of fracture networks, contained within a zone called excavation damaged zone (EDZ). The EDZ has been identified as one of the main aspects affecting the behaviour of the excavations. In this context, the main objective of the present study is the numerical simulation of the hydromechanical behaviour of experimental excavations performed at the Meuse/Haute-Marne URL (France). For this purpose, a constitutive model has been developed to characterise the host formation. The modelling of these stiff argillaceous materials is a quite challenging task. They exhibit soil-like features like considerable plastic strains, rate-dependency, and creep, although they also show characteristics more typical of a rock such as significant softening and localised deformations. In addition, due to their sedimentary origin, they often exhibit anisotropy in properties like stiffness, strength, and permeability. Special attention has been paid to the reproduction of the EDZ and, therefore, to the objective simulation of localised deformations; a nonlocal approach has been employed for the regularisation of the continuum, avoiding the dependence on the employed mesh. The obtained results provide relevant insights into the hydromechanical behaviour of these stiff clayey materials, and they indicate the main aspects affecting the response of the underground excavations. In particular, the relevance of the EDZ has been demonstrated.
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Chapman, Paul. "Geochemical and mineralogical studies of the weathering of Silurian argillaceous rocks." Thesis, Bangor University, 1986. https://research.bangor.ac.uk/portal/en/theses/geochemical-and-mineralogical-studies-of-the-weathering-of-silurian-argillaceous-rocks(6c031611-9af6-4a62-a663-d76c9cd5ad94).html.

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This work was carried out as part of the Natural Environment Research Council's geochemical cycling programme. Its aim was to identify the changes taking place in the constituent minerals as Silurian Gwestyn Shale weathers to a humic stagnopodsol soil at Plynlimon, mid Wales. Hand specimen appearance and chemical analyses show that the rock groups present at Plynlimon are not homogeneous. The chlorites in different rocks are also shown to have significantly different chemical compositions, and are seen to be physically intergrown with-mica. Another source of variation is that many of the soils are developed on glacial or periglacial deposits, rather than directly on rock.
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Tourchi, Saeed. "THM analysis of argillaceous rocks with application to nuclear waste underground storage." Doctoral thesis, Universitat Politècnica de Catalunya, 2020. http://hdl.handle.net/10803/670899.

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Argillaceous rocks (Stiff sedimentary clays) provide the geological background to many civil engineering projects. In recent years, interest in these types of material has increased, because they are being considered as potential host geological media for underground repositories of high-level radioactive waste (HLW). The possible use of these types of clay as geological hosts for radioactive waste has prompted the construction of several underground laboratories. Among the very different topics addressed in the Underground Research Laboratories (URLs), the thermo-hydro-mechanical (THM) behaviour of the host rock is the one that most concerns the present research. In situ observations have revealed a considerable number of coupled THM processes in the operation of an HLW repository. In this context, the main objective of the present study is to describes the performance, observations and interpretation of the full-scale in situ heating test conducted on Callovo-Oxfordian (COx) claystone in the Meuse / Haute-Marne URL simulating a heat-emitting, high-level radioactive waste disposal concept. The test is fully instrumented, and attention is focused on the near-field region's the THM behaviour consisting of the sleeve surrounding the heater and the host rock. The interpretation of the test is assisted by the performance of a coupled numerical analysis based on a coupled formulation incorporating the relevant THM phenomena. The calculations have used a reference isothermal constitutive model especially developed for this type of material. The reference model later has been extended to non-isothermal condition by incorporating thermal dependency of strength parameters and stiffness. The thermomechanical model has been successfully used in the simulation of triaxial tests on COx claystone. The numerical analysis performed has proved able to represent the progress of the experiment very satisfactorily. The performance and analysis of the in-situ test has significantly enhanced the understanding of a complex THM problem and have proved the capability of the numerical formulation and non-isothermal constitutive model to provide adequate predictive capacity.
Las rocas argiláceas (arcillas sedimentarias rígidas) proporcionan el trasfondo geológico de muchos proyectos de ingeniería civil. En los últimos años, ha aumentado el interés por este tipo de materiales, porque están siendo considerados como posibles medios geológicos hospedadores de depósitos subterráneos de desechos radiactivos de alta actividad (HLW). El posible uso de este tipo de arcilla como hospedante geológico de residuos radiactivos ha impulsado la construcción de varios laboratorios subterráneos. Entre los muy diferentes temas que se abordan en los Laboratorios de Investigación Subterránea (URL), el comportamiento termo-hidromecánico (THM) de la roca huésped es el que más preocupa a la presente investigación. Las observaciones in situ han revelado un número considerable de procesos THM acoplados en el funcionamiento de un depósito de HLW. En este contexto, el objetivo principal del presente estudio es describir el rendimiento, las observaciones y la interpretación de la prueba de calentamiento in situ a gran escala realizada en piedra arcillosa Callovo-Oxfordian (COx) en la URL de Mosa / Haute-Marne simulando un calor- concepto de eliminación de desechos radiactivos de alto nivel emisor. La prueba está totalmente instrumentada y la atención se centra en el comportamiento del THM de la región de campo cercano que consiste en la manga que rodea el calentador y la roca anfitriona. La interpretación de la prueba es asistida por la realización de un análisis numérico acoplado basado en una formulación acoplada que incorpora los fenómenos de THM relevantes. Los cálculos han utilizado un modelo constitutivo isotérmico de referencia especialmente desarrollado para este tipo de material. Posteriormente, el modelo de referencia se ha ampliado a condiciones no isotérmicas incorporando la dependencia térmica de los parámetros de resistencia y rigidez. El modelo termomecánico se ha utilizado con éxito en la simulación de ensayos triaxiales en arcillas COx. El análisis numérico realizado ha demostrado ser capaz de representar de forma muy satisfactoria el avance del experimento. El rendimiento y el análisis de la prueba in situ ha mejorado significativamente la comprensión de un problema THM complejo y ha demostrado la capacidad de la
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Xu, Wenjie. "Investigation of Gas Migration in saturated Argillaceous Rock." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-132511.

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Gas migration in saturated argillaceous rock is studied in this work. Dependent on the pressure level the gas transport process is controlled by different mechanisms. Gas injection tests have been carried to investigate the gas transport process in low permeable argillaceous rock. We focus on the Opalinus Clay, which has been widely researched and is important for searching possible host rock of the radioactive waste disposal. Gas injection tests at different scales (laboratory, in-situ borehole and in-situ tunnel test) are intensively investigated in this work. The measurements of the tests are analysed and interpreted with numerical modelling method. A coupled multi-phase flow and mechanical model has been developed and implemented in the scientific computed codes OpenGeoSys (OGS). In the applied numerical model the relationship between capillary pressure and water saturation degree is described with van Genuchten model. The Darcy’s law is used for the phase flux, and the relative permeability of both water and gas phase is considered. The deformation process is calculated with elastic perfect-plastic model. The anisotropic hydraulic and mechanic behaviours of the Opalinus Clay are involved in the numerical model. The hydraulic anisotropy is controlled by the permeability tensor. The elastic deformation process is modelled by generalized Hooke’s law. The plastic behaviour is calculated with return mapping algorithm, and the anisotropy is considered with a so called microstructure tensor method. The permeability change during the gas injection is described using pressure dependent or deformation dependent approach. With considering the permeability evolution the measured data can be in the numerical model quantitatively represented, and test observations can be interpreted. Under laboratory condition it can be determined that the specimen permeability is reduced during compression. The significant permeability increase takes places when the gas injection pressure higher than the confining pressure. By the in-situ tests damage zone can be generated due to the drilling of boreholes and tunnel. The highly permeable areas dominate the hydraulic process. Fluid flows through the damaged zone into the not sealed section, e.g. the seismic observation boreholes by the in-situ borehole tests and the section out of the megapacker by the in-situ tunnel tests. In this work, the two phase flow controlled and pathway dilatancy controlled gas migration mechanisms are successfully simulated. The developed numerical model can be used to investigate the gas injection tests at different scales and conditions.
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Maldonado, Sanchez Guadalupe. "Measuring Diffusion Coefficients in Low-Porosity Rocks by X-Ray Radiography." Thesis, Université d'Ottawa / University of Ottawa, 2020. http://hdl.handle.net/10393/41435.

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Deep geological repositories (DGR) are considered an effective long-term solution for radioactive waste disposal. Sedimentary (argillaceous formations) and crystalline rocks are currently under investigation worldwide as potential host formations for DGR. Their low porosity (<1-2 %) and very low hydraulic conductivity result in diffusion-dominated solute transport. There is a need to investigate their diffusion properties in detail, the long-established diffusion methods do not allow an evaluation of the spatial relationship between tracers and the characteristics of the geological medium. The aim of this project was to measure diffusion coefficients in low-porosity rocks (< 2%) using X-ray radiography and iodide tracer. The method is a non-destructive technique based on the principle of X-ray attenuation; it provides temporal- and spatially-resolved information of a highly attenuating tracer diffusing in a sample. Samples from the Cobourg Formation, an Ordovician argillaceous limestone from the Michigan Basin, and from the Lac du Bonnet batholith, an Archean granitic pluton were used in this study. X-ray radiography data from the Cobourg Formation indicate tracer accumulation occurs on dark argillaceous layers in the rock characterized by clay minerals and organic matter. It is proposed that the I– tracer solution underwent photo-chemical oxidation, leading to the formation of I2, a highly reactive volatile iodine species and I3–, which readily reacted with humic substances contained in the clay- and organic rich zones in the limestone samples. In the case of the granitic samples, attempts at measuring diffusion coefficients encountered several challenges. The results indicate that tracer signal can be detected, however diffusion signal is masked by imaging errors and noise.
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Wang, Linlin. "Micromechanical experimental investigation and modelling of strain and damage of argillaceous rocks under combined hydric and mechanical loads." Palaiseau, Ecole polytechnique, 2012. http://pastel.archives-ouvertes.fr/docs/00/79/49/00/PDF/these_linlin_WANG.pdf.

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Ce mémoire présente l'étude expérimentale et la modélisation à l'échelle microscopique du comportement hydromécanique des argilites, roche hôte potentielle pour le stockage souterrain des déchets radioactifs. Le champ de déformation est mesuré par microscopie électronique à balayage environnementale et corrélation d'images numériques. En premier lieu, on étudie le cas du chargement hydrique pur. Le champ de déformation obtenu est très hétérogène, et montre une anisotropie. La non-linéarité de déformation pour HR élevée est le résultat combiné d'une fissuration et d'un gonflement non-linéaire de la phase argileuse dû à des mécanismes différents selon humidité relative (HR). On constate une déformation irréversible lors d'un cycle hydrique, ainsi qu'un réseau de microfissures localisées dans la phase argileuse ou aux interfaces grain-matrice. Ensuite, on étudie le cas du chargement combiné hydrique et mécanique dans le MEBE. Trois types de bandes de déformation apparaissent au cours du chargement mécanique : horizontales (compaction), verticales (fissuration), et inclinées (cisaillement). Les bandes de cisaillement apparaissent plus tôt à HR plus élevée. Finalement, le matériau sous chargement hydrique est modélisé comme un composite constitué par de inclusions non gonflantes au sein d'une matrice gonflante. On calcule d'abord le champ de contrainte interne dû aux interactions inclusion-matrice ainsi qu'au gradient d'humidité, et ensuite la déformation globale. On en dérive un modèle micromécanique du type du problème d'Eshelby. De plus, des modélisations 2D aux éléments finis sont effectuées
The hydromechanical behavior of argillaceous rocks, which are possible host rocks for underground radioactive nuclear waste storage, is investigated by means of micromechanical experimental investigations and modellings. Strain fields at the micrometric scale of the composite structure of this rock, are measured by the combination of environmental scanning electron microscopy, in situ testing and digital image correlation technique. The evolution of argillaceous rocks under pure hydric loading is first investigated. The strain field is strongly heterogeneous and manifests anisotropy. The observed nonlinear deformation at high relative humidity (RH) is related not only to damage, but also to the nonlinear swelling of the clay mineral itself, controlled by different local mechanisms depending on RH. Irreversible deformations are observed during hydric cycles, as well as a network of microcracks located in the bulk of the clay matrix and/or at the inclusion-matrix interface. Second, the local deformation field of the material under combined hydric and mechanical loadings is quantified. Three types of deformation bands are evidenced under mechanical loading, either normal to stress direction (compaction), parallel (microcracking) or inclined (shear). Moreover, they are strongly controlled by the water content of the material: shear bands are in particular prone to appear at high RH states. In view of understanding the mechanical interactions a local scale, the material is modeled as a composite made of non-swelling elastic inclusions embedded in an elastic swelling clay matrix. The internal stress field induced by swelling strain incompatibilities between inclusions and matrix, as well as the overall deformation, is numerically computed at equilibrium but also during the transient stage associated with a moisture gradient. An analytical micromechanical model based on Eshelby's solution is proposed. In addition, 2D finite element computations are performed. Results are discussed in relation with experimental observations
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Bellwald, Philippe. "A contribution to the design of tunnels in argillaceous rock." Thesis, Massachusetts Institute of Technology, 1990. http://hdl.handle.net/1721.1/12777.

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Kleine, Alexandra. "Modélisation numérique du comportement des ouvrages souterrains par une approche viscoplastique." Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL083N/document.

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La nature est complexe et c’est en toute modestie que les ingénieurs doivent chercher à prédire le comportement des ouvrages dans le sous-sol. La réalisation de projets industriels dans le domaine souterrain, à forts enjeux économiques et sociaux (traversées alpines, stockage de déchets nucléaires), nécessite d’évoluer vers une meilleure compréhension des mécanismes comportementaux des ouvrages à concevoir. Cette amélioration passe par une meilleure représentativité physique des mécanismes macroscopiques et par la mise à disposition d’outils de prédiction adaptés aux attentes et aux besoins des ingénieurs. Les outils de calculs développés dans ce travail s’inscrivent dans cette volonté de rapprocher les attentes de l’industrie et les connaissances liées à la rhéologie des géomatériaux. Ces développements ont ainsi débouché sur la proposition d’un modèle de comportement mécanique, adapté aux roches peu fissurées et assimilables à des milieux continus, intégrant, en particulier, l’effet du temps. Fil conducteur de cette étude, la problématique du sujet de thèse concerne précisément la prise en compte du comportement différé des massifs rocheux dans les modélisations et ses conséquences sur les ouvrages souterrains.Fondé sur des concepts physiques de référence, définis à différentes échelles (macro/méso/micro), le modèle rhéologique développé est transcrit dans un formalisme mathématique dans le but d’être mis en oeuvre numériquement.Les applications numériques proposées s’inscrivent principalement dans le contexte du stockage des déchets radioactifs. Elles concernent deux configurations d’ouvrages rigoureusement différentes : l’excavation du laboratoire souterrain canadien de l’AECL, dans le granite du Lac du Bonnet et le creusement de la galerie GMR du laboratoire de Bure (Meuse/Haute-Marne) dans l’argilite de l’Est. Dans les deux cas, l’utilisation du modèle a permis de mettre en évidence l’apport de la prise en compte du comportement différé sur la représentativité des prédictions numériques du comportement à court, moyen et long termes des ouvrages souterrains
Nature is complex and must be approached in total modesty by engineers seeking to predict the behavior of underground openings. The engineering of industrial projects in underground situations, with high economic and social stakes (Alpine mountain crossings, nuclear waste repository), mean striving to gain better understanding of the behavioral mechanisms of the openings to be designed. This improvement necessarily involves better physical representativeness of macroscopic mechanisms and the provision of prediction tools suited to the expectations and needs of the engineers. The calculation tools developed in this work is in step with this concern for satisfying industrial needs and developing knowledges related to the rheology of geomaterials. These developments led to the proposing of a mechanical constitutive model, suited to lightly fissured rocks, comparable to continuous media, while integrating more particularly the effect of time.Thread of this study, the problematics ensued from the subject of the thesis is precisely about the rock mass delayed behavior in numerical modeling and its consequences on underground openings design.Based on physical concepts of reference, defined in several scales (macro/meso/micro), the developed constitutive model is translated in a mathematical formalism in order to be numerically implemented.Numerical applications presented as illustrations fall mainly within the framework of nuclear waste repository problems. They concern two very different configurations of underground openings: the AECL’s underground canadian laboratory, excavated in the Lac du Bonnet granite, and the GMR gallery of Bure’s laboratory (Meuse/Haute-Marne), dug in argillaceous rock.In this two cases, this constitutive model use highlights the gains to be obtained from allowing for delayed behavior regarding the accuracy of numerical tunnel behavior predictions in the short, medium and long terms
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Xu, Wenjie [Verfasser], Olaf [Akademischer Betreuer] Kolditz, Michael Zhengmeng [Akademischer Betreuer] Hou, and Weimin [Akademischer Betreuer] Ye. "Investigation of Gas Migration in saturated Argillaceous Rock / Wenjie Xu. Gutachter: Olaf Kolditz ; Michael Zhengmeng Hou ; Weimin Ye." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://d-nb.info/1068444940/34.

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Villalba-Mahmoudi, Marlène. "Influence de la composition chimique des huiles sur leur transformations au cours du craquage thermique : etude experimentale et application a la combustion in situ." Paris 6, 1988. http://www.theses.fr/1988PA06A004.

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Quatre huiles (boscan, cerro negro, nordhorn et pematang) sont pyrolysees en milieu ferme. Les produits de reaction sont analyses et leur formation est correlee a la composition chimique des huiles de depart. Des experiences de pyrolyse sont realisees avec les memes huiles en presence de matrices minerales telles que le quartz, la kaolinite et l'ellite. Les resultats montrent que les mineraux argileux favorisent es reactions de cokefaction. Un essai de deplacement du front de combustion est realise avec l'huile de cerro negro afin de determiner des methodologies d'etude des transformations thermiques de l'huile au cours de la combustion in situ
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Books on the topic "Argillaceous rocks"

1

International Workshop on Geomechanics (2000 Paris, France). Hydromechanical and thermohydromechanical behaviour of deep argillaceous rock: Theory and experiments : proceedings of the International Workshop on Geomechanics, Paris, France, 11-12 October 2000. Lisse: A.A. Balkema, 2002.

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M, Slatt Roger, ed. Argillaceous rock atlas. New York (175 Fifth Ave., New York 10010): Springer-Verlag, 1990.

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O’Brien, Neal R., and Roger M. Slatt. Argillaceous Rock Atlas. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7.

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Pollastro, Richard M. Reconnaissance bulk-rock and clay mineralogies of argillaceous Great Valley and Franciscan strata, Santa Maria Basin province, California. [Washington: U.S. G.P.O., 1995.

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Porewater Extraction from Argillaceous Rocks for Geochemical Characterisation. OECD Publishing, 2000. http://dx.doi.org/10.1787/9789264182462-en.

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Agency, OECD Nuclear Energy, ed. Porewater extraction from argillaceous rocks for geochemical characterisation: Methods and interpretation. Paris: Nuclear Energy Agency, Organisation for Economic Co-operation and Development, 2000.

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Nea. Porewater Extraction from Argillaceous Rocks for Geochemical Characterisation: Methods and Interpretations (Radioactive Waste Management). Organization for Economic, 2000.

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OECD Nuclear Energy Agency. Working Group on Measurement and Physical Understanding of Ground Flow Through Argillaceous Media., ed. Hydraulic and hydrochemical characterisation of argillaceous rocks: Proceedings of an international workshop Nottingham, United Kingdom, 7-9 June 1994. Paris: Nuclear Energy Agency, Organisation for Economic Co-operation and Development, 1995.

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Green, A., and M. L. Bradbury. Retardation of Radionuclide Transport by Fracture Flow in Granite and Argillaceous Rocks (Nuclear Science and Technology (European Comm Info Serv)). European Communities, 1986.

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Organisation for economic co-operation and development. Hydraulic and Hydrochemical Characterisation of Argillaceous Rocks: Proceedings of an Int. Workshop Nottingham, Uk 7-9, June 1994 (Disposal of Radioactive Waste). Organization for Economic, 1995.

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Book chapters on the topic "Argillaceous rocks"

1

Greensmith, J. T. "Argillaceous deposits." In Petrology of the Sedimentary Rocks, 85–102. Dordrecht: Springer Netherlands, 1989. http://dx.doi.org/10.1007/978-94-011-9640-6_6.

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O’Brien, Neal R., and Roger M. Slatt. "Composition of Argillaceous Rocks." In Argillaceous Rock Atlas, 121–28. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7_10.

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O’Brien, Neal R., and Roger M. Slatt. "Miscellaneous Features in Argillaceous Rocks." In Argillaceous Rock Atlas, 31–37. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7_4.

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O’Brien, Neal R., and Roger M. Slatt. "Fabrics of Some Hydrocarbon Source Rocks and Oil Shales." In Argillaceous Rock Atlas, 97–113. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7_8.

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Caicedo, Bernardo, Jairo Martin Espitia, and Luis Vallejo. "Hydro-mechanical Behaviour of Unsaturated Argillaceous Rocks." In Advances in Laboratory Testing and Modelling of Soils and Shales (ATMSS), 3–13. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52773-4_1.

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Roxburgh, I. S. "The suitability of argillaceous rocks as HLW repositories." In Geology of High-Level Nuclear Waste Disposal, 75–93. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-2609-7_4.

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Corominas, Jordi, Joan Martinez-Bofill, and Albert Soler. "TXT-tool 3.034-1.1: A Textural Classification of Argillaceous Rocks and Their Durability." In Landslide Dynamics: ISDR-ICL Landslide Interactive Teaching Tools, 421–33. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-57777-7_24.

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O’Brien, Neal R., and Roger M. Slatt. "Introduction." In Argillaceous Rock Atlas, 1–6. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7_1.

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O’Brien, Neal R., and Roger M. Slatt. "Conclusions." In Argillaceous Rock Atlas, 129–31. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7_11.

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O’Brien, Neal R., and Roger M. Slatt. "Fabric Analysis Techniques." In Argillaceous Rock Atlas, 7–10. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3422-7_2.

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Conference papers on the topic "Argillaceous rocks"

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Wang, Linlin, Michel Bornert, and Serge Chanchole. "Micro-Scale Experimental Investigation of Deformation and Damage of Argillaceous Rocks under Hydric and Mechanical Loads." In Fifth Biot Conference on Poromechanics. Reston, VA: American Society of Civil Engineers, 2013. http://dx.doi.org/10.1061/9780784412992.193.

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Abbas, Mohammed A., and Watheq J. Al-Mudhafar. "Lithofacies Classification of Carbonate Reservoirs Using Advanced Machine Learning: A Case Study from a Southern Iraqi Oil Field." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31114-ms.

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Abstract Estimating rock facies from petrophysical logs in non-cored wells in complex carbonates represents a crucial task for improving reservoir characterization and field development. Thus, it most essential to identify the lithofacies that discriminate the reservoir intervals based on their flow and storage capacity. In this paper, an innovative procedure is adopted for lithofacies classification using data-driven machine learning in a well from the Mishrif carbonate reservoir in the giant Majnoon oil field, Southern Iraq. The Random Forest method was adopted for lithofacies classification using well logging data in a cored well to predict their distribution in other non-cored wells. Furthermore, three advanced statistical algorithms: Logistic Boosting Regression, Bagging Multivariate Adaptive Regression Spline, and Generalized Boosting Modeling were implemented and compared to the Random Forest approach to attain the most realistic lithofacies prediction. The dataset includes the measured discrete lithofacies distribution and the original log curves of caliper, gamma ray, neutron porosity, bulk density, sonic, deep and shallow resistivity, all available over the entire reservoir interval. Prior to applying the four classification algorithms, a random subsampling cross-validation was conducted on the dataset to produce training and testing subsets for modeling and prediction, respectively. After predicting the discrete lithofacies distribution, the Confusion Table and the Correct Classification Rate Index (CCI) were employed as further criteria to analyze and compare the effectiveness of the four classification algorithms. The results of this study revealed that Random Forest was more accurate in lithofacies classification than other techniques. It led to excellent matching between the observed and predicted discrete lithofacies through attaining 100% of CCI based on the training subset and 96.67 % of the CCI for the validating subset. Further validation of the resulting facies model was conducted by comparing each of the predicted discrete lithofacies with the available ranges of porosity and permeability obtained from the NMR log. We observed that rudist-dominated lithofacies correlates to rock with higher porosity and permeability. In contrast, the argillaceous lithofacies correlates to rocks with lower porosity and permeability. Additionally, these high-and low-ranges of permeability were later compared with the oil rate obtained from the PLT log data. It was identified that the high-and low-ranges of permeability correlate well to the high- and low-oil rate logs, respectively. In conclusion, the high quality estimation of lithofacies in non-cored intervals and wells is a crucial reservoir characterization task in order to obtain meaningful permeability-porosity relationships and capture realistic reservoir heterogeneity. The application of machine learning techniques drives down costs, provides for time-savings, and allows for uncertainty mitigation in lithofacies classification and prediction. The entire workflow was done through R, an open-source statistical computing language. It can easily be applied to other reservoirs to attain for them a similar improved overall reservoir characterization.
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Wang, Linlin, Michel Bornert, and Serge Chancole. "Microscopic Investigation of the Deformation Mechanisms of Argillaceous Rock." In Sixth Biot Conference on Poromechanics. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480779.181.

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Gens, A., B. Garitte, and J. Vaunat. "Analysis of a Deep Shaft Excavation in Argillaceous Rock." In GeoFlorida 2010. Reston, VA: American Society of Civil Engineers, 2010. http://dx.doi.org/10.1061/41095(365)148.

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Fierz, Thomas, Médéric Piedevache, Jacques Delay, Gilles Armand, and Jacques Morel. "Specialized Instrumentation for Hydromechanical Measurements in Deep Argillaceous Rock." In Seventh International Symposium on Field Measurements in Geomechanics. Reston, VA: American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40940(307)33.

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Dong, Cheng Shan, Yan Chao Yuan, Jian Feng Hu, and Zheng Quan Yang. "The Variation Law of Longitudinal Sonic Wave Velocity in Argillaceous Rock in Kohala Hydropower Project in Pakistan." In 2017 3rd International Forum on Energy, Environment Science and Materials (IFEESM 2017). Paris, France: Atlantis Press, 2018. http://dx.doi.org/10.2991/ifeesm-17.2018.56.

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Kunimaru, Takanori, Ryuji Takeuchi, and Tatsuji Matsuzaki. "Technical Know-How of Selection Process for the Horonobe Underground Research Laboratory Area and Site." In ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59088.

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This study demonstrates the selection process for the Horonobe URL based on surveys of existing information and geophysical surveys on a regional scale. In addition, preliminary requirements on the geological environment, safety (during construction of the underground facility) and social and environmental constraints were taken into consideration. The technical know-how utilised through the experiences for the site selection is described here. The proposed Horonobe URL site required the existence of argillaceous sedimentary formations and associated groundwater. Further fundamental requirements were appropriate rock mechanical properties and low gas content in the host rock to meet safe underground construction and operation regulations. This led to a stepwise narrowing down from several potential URL areas located completely within the Horonobe District to one candidate URL area and, finally, to a specific URL site. In the URL investigation area (ca. 3 km × 3 km) the main surface-based investigations were conducted as the first step to choosing the actual URL site. This was selected based on establishing fundamental factors related to the geological environment, safety and societal issues. This paper provides an outline of the process utilised in selecting the URL site by taking into consideration technical and social requirements. Thus stepwise approach and experience in selecting the URL site will be applicable when NUMO needs to select a site through literature surveys, and preliminary and detailed investigations in the future.
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AL-Rashidi, Hamad, Mahmoud Reda Aly Hussein Hussein, Abdulaziz Erhamah, Satinder Malik, Abdulrahman AL-Hajri, Dwane Almeida, Nazanine Salehi, German Omonte, and Alain Zaitoun. "Mitigating Water Production from High Viscosity Oil Wells in Unconsolidated Sandstone Formations." In SPE Annual Technical Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/206333-ms.

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Abstract Large reserves of High-Viscous Oil in Kuwait calls for Improved Oil Recovery scenarios. In Kuwait unconsolidated sandstone formations, the sandstone intervals represent extensive reservoir intervals of sand separated by laterally extensive non-reservoir intervals that comprise finer-grained, argillaceous sands, silts and muds. The reservoir is shallow with high permeability (above 1000 mD) and under bottom aquifer pressure support. Due to strong viscosity contrast between oil and water, after breakthrough, the water cut rises quickly resulting in strong loss of production efficiency. Mitigating water production is thus mandatory to improve production conditions. The candidate wells have 2 to 3 open intervals in different rock facies with comingle production. The total perforated length is between 38 and 48 ft. Production is through PCP at a rate of around 300 bpd and BS&W is between 71 and 87%. The technology applied utilizes pre-gelled size-controlled product (SMG Microgels) having RPM properties, i.e. inducing a strong drop of relative permeability to water without affecting oil relative permeability. The size is chosen to selectively treat the high-permeability water producing zones while preserving the lower-permeability oil zones. The chemical can also withstand downhole harsh conditions such as salinity of around 170,000ppm and presence of 2% H2S. The treatment consisted of bullhead injection of 300 bbls of pre-gelled chemical through tubing. The first results seem very favourable, sincefor two wells, the water cut has dropped from 80 to 40% with almost same gross production rate. The incremental oil is more than 100 bopd. The third well did not show marked change after WSO treatment. The wells are under continuous monitoring to assess long-term performance. Such result, if confirmed, may lead to high possibilities for the improvement of heavy-oil reservoir production under aquifer support by mitigating water production with simple chemical bullhead injection.
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Joshi, Girija K., Mihira N. Acharya, Marie Van Steene, Sandeep Chakravorty, Christophe Darous, Mejbel S. Al-Azmi, and Qasem Dashti. "Direct TOC Quantification in unconventional Kerogen-rich Shale Resource Play from Elemental Spectroscopy Measurements: A Case Study from North Kuwait." In SPE Middle East Unconventional Resources Conference and Exhibition. SPE, 2015. http://dx.doi.org/10.2118/spe-172975-ms.

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Abstract The deep organic-rich calcareous Kerogen of North Kuwait, a continuous 50ft thinly alternating carbonate – organic-rich argillaceous sequence, is not only a source rock but has gained importance as potential reservoirs themselves of typical unconventional category. Resource play or Kerogen characterization relies on quantifying total organic carbon (TOC) and estimating accurate mineralogy. This paper describes the first attempt to directly measure total organic carbon of the Limestone-Kerogen sequence. For the present study, empirical estimations of TOC have been carried out based on conventional log measurements and nuclear magnetic resonance (NMR). The introduction of a new neutron-induced capture and inelastic gamma ray spectroscopy tool using a very high-resolution scintillator and a new type of pulsed neutron generator for the deep unconventional kerogen resources have provided a unique opportunity to measure a stand-alone quantitative TOC value using a combination of capture and inelastic gamma ray spectra. In this process, Inorganic Carbon Content (ICC) is estimated by using elemental concentrations measured by this logging tool in addition to measuring Total Carbon, and this value is subtracted from the measured total carbon to give TOC. The advanced elemental spectroscopy tool measurements were first used to determine accurately the complex mineralogy of the layered carbonate and organic-rich shale sequence. Extensive laboratory measurements of core / cuttings data were used to calibrate the petrophysical evaluation and capture the heterogeneity seen on borehole image logs. The final analysis shows considerable improvements compared to conventional empirical estimation. Once the mineralogy is properly determined, the log-derived TOC matches very well with core measured TOC. This technique has provided a new direct and accurate log-derived TOC for Kerogen characterization. The application has a potential to be used for CAPEX optimization of the coring in future wells. This technique can also be applied in HPHT and High-angle horizontal wells, which can overcome challenging coring difficulties in horizontal wells.
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Zhang, Hengrong, Lizhi Xiao, Wensheng Wu, Xinyue Fu, and Shenglin He. "Inversion of Reservoir Parameters by Ultra-High Temperature and High Pressure CO2 Gas Reservoirs with Nuclear Logging." In International Petroleum Technology Conference. IPTC, 2021. http://dx.doi.org/10.2523/iptc-21319-ms.

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Abstract The Yinggehai basin is located in the western part of the South China Sea, the burial depth of the Huangliu and Meishan formations in the target layer is close to 4000 meters, the formation temperature is close to 200 degrees Celsius, and the formation pressure is up to 100 MPa. The reservoir is characterized by low porosity-ultra-low permeability, heavy carbonate cement, complex CO2 content, this leads to complex neutron and density logging effects. The solubility of CO2 Above CH4, the solubility change with temperature and pressure is different from CH4, which makes it difficult to identify the CO2 gas layer. In this paper, based on the difference in the physical characteristics of CO2 and CH4, the Boltzmann equation combined with MCNP software was used to simulate the neutron and density logging responses under different CO2 saturations. Environmental factors such as temperature and pressure, carbonate cement, mud content and pores were studied To measure the effect of logging response, the LM inversion method is used to jointly invert CO2 saturation of density and neutron logs. The purpose of the inversion is to reduce the non-uniqueness of the evaluation of porosity and CO2 saturation. By introducing the Levenberg-Marquardt (LM) method, the neutron logging response equation of the porosity, argillaceous content, CO2, CH4 in the rock and the corresponding temperature and pressure is solved, and also the response equation of above parameters to density logging, where porosity and CO2 content are the key parameters, and the calculation results prove the effectiveness of the method by comparing the sampling data. The results show that the accuracy of the estimated CO2 saturation is increased by 10% compared with the conventional interpretation method, and the new simulation method improves the calculation speed several times compared to the MCNP software. The joint inversion method has been successfully applied to field data, which has greatly improved the saturation evaluation results of traditional logging interpretation methods, can be extended to other fields of nuclear logging simulation and inversion.
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Reports on the topic "Argillaceous rocks"

1

Evans, James. Impact of Micro-to Meso-scale Fractures on Sealing Behavior of Argillaceous Cap Rocks For CO2 Sequestration. Office of Scientific and Technical Information (OSTI), August 2016. http://dx.doi.org/10.2172/1302338.

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Kopp, O. C., P. J. Mulligan, and D. K. Reeves. A preliminary assessment of the relationship between the mineralogy and diagenetic history of four argillaceous rocks and their thermomechanical properties. Office of Scientific and Technical Information (OSTI), November 1988. http://dx.doi.org/10.2172/6676643.

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Kopp, O. C. A preliminary assessment of mineralogical criteria on the utility of argillaceous rocks and minerals for high-level radioactive waste disposal. Office of Scientific and Technical Information (OSTI), December 1986. http://dx.doi.org/10.2172/6814958.

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Zheng, Liange, Jonny Rutqvist, Harris Greenberg, and Jens Birkholzer. Model Evaluation of the Thermo-Hydrological Response in Argillaceous Sedimentary Rock Repository for Direct Disposal of Dual-Purpose Canisters. Office of Scientific and Technical Information (OSTI), June 2014. http://dx.doi.org/10.2172/1136780.

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Conglomerates of the upper middle Eocene to lower Miocene Sespe Formation along the Santa Ynez Fault; implications for the geologic history of the eastern Santa Maria Basin area, California. Reconnaissance bulk-rock and clay mineralogies of argillaceous Great Valley an Franciscan strata, Santa Maria Basin Province, California. US Geological Survey, 1995. http://dx.doi.org/10.3133/b1995hi.

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