Relevant bibliographies by topics / Orientation des fissures

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  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Orientation des fissures'

Author: Grafiati
Published: 5 October 2024

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Journal articles on the topic "Orientation des fissures"

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Li, Feida, Feiyong Wang, Fujiang Wang, and Guoqing Li. "Developmental Characteristics and Genesis of Ground Fissures in Wangjiacun, Emei Plateau, Yuncheng Basin, China." Sustainability 16, no. 9 (2024): 3649. http://dx.doi.org/10.3390/su16093649.

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The Yuncheng Basin is part of the Fenwei Graben System, which has developed ground fissure hazards that have caused serious damage to farmland, houses, and roads and have brought about huge economic losses. Located in Wanrong County on the Emei Plateau in the northwestern part of the Yuncheng Basin in China, the Wangjiacun ground fissure is a typical and special ground fissure developed in loess areas, and its formation is closely related to tectonic joints and the collapsibility of loess. In order to reveal the formation and genesis of the Wangjiacun ground fissure, the geological background,
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Han, Zeng Qiang, Chuan Ying Wang, and Heng Yin Zhu. "Investigation of Deep Joints and Analysis of Lode Extension Direction in Shapinggou Molybdenum Mine." Applied Mechanics and Materials 638-640 (September 2014): 2151–54. http://dx.doi.org/10.4028/www.scientific.net/amm.638-640.2151.

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By investigating on the joints and fissures in Shapinggou molybdenum mine based on digital borehole camera technology, the dominant orientation of joint fissure in surrounding rock and ore body were statistically analyzed. Applying the theory of metallogeny and geostatistics, the relationship between joint fissure and lode’s extension direction is explored. The results indicate that joints in the ore body of ZK61borehole have only one dominant orientation SE126°∠68°, however, the dominant orientations of joints in surrounding rock were SE118°∠73°, SW225°∠70°and SE122°∠65°, NE79°∠63°. Then a pr
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Han, Zengqiang, Chuanying Wang, and Hengyin Zhu. "Research on Deep Joints and Lode Extension Based on Digital Borehole Camera Technology." Polish Maritime Research 22, s1 (2015): 10–14. http://dx.doi.org/10.1515/pomr-2015-0025.

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Abstract Structure characteristics of rock and orebody in deep borehole are obtained by borehole camera technology. By investigating on the joints and fissures in Shapinggou molybdenum mine, the dominant orientation of joint fissure in surrounding rock and orebody were statistically analyzed. Applying the theory of metallogeny and geostatistics, the relationship between joint fissure and lode’s extension direction is explored. The results indicate that joints in the orebody of ZK61borehole have only one dominant orientation SE126° ∠68°, however, the dominant orientations of joints in surroundi
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Hossain, D., and D. G. McKinlay. "The influence of fissures on the consolidation of a glacial till." Geological Society, London, Engineering Geology Special Publications 7, no. 1 (1991): 143–49. http://dx.doi.org/10.1144/gsl.eng.1991.007.01.11.

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AbstractThe influence of fissures on the permeability, compressibility and consolidation rate properties of glacial till at three sites in and near Glasgow, Scotland has been studied. This included both the determination of the orientation and other characteristics of the fissures in the tills, both in-situ and in laboratory specimens, and measurement of the above properties by testing large specimens at various loading/drainage orientations.Comparatively large variations in permeability and consolidation rate and small variations in compressibility were observed for specimens of different siz
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Xiao, Runing, and Jinzhi Zhou. "Pulmonary Fissure Detection in 3D CT Images Using a Multiple Section Model." Algorithms 12, no. 4 (2019): 75. http://dx.doi.org/10.3390/a12040075.

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As a typical landmark in human lungs, the detection of pulmonary fissures is of significance to computer aided diagnosis and surgery. However, the automatic detection of pulmonary fissures in CT images is a difficult task due to complex factors like their 3D membrane shape, intensity variation and adjacent interferences. Based on the observation that the fissure object often appears as thin curvilinear structures across 2D section images, we present an efficient scheme to solve this problem by merging the fissure line detection from multiple cross-sections in different directions. First, an ex
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Tudisco, Erika, Claudia Vitone, Cristina Mondello, et al. "Influence of fissure inclination and confining pressure on the local behaviour of natural clays." E3S Web of Conferences 92 (2019): 03004. http://dx.doi.org/10.1051/e3sconf/20199203004.

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In this experimental study the influence of fissuring orientation and confinement pressure on the mechanical behaviour of natural clays is investigated. The tested material, the scaly clay from Santa Croce di Magliano (south of Italy), is characterised by an intense network of pre-existing fissures of single orientation. Several plane strain compression tests have been conducted, under different confinement pressures (i.e., from 50 to 600 kPa), on specimens having fissures with vertical, medium and horizontal inclination. Digital Image Correlation has been used to follow the deformation proces
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Wang, Kun, Bowei Wei, Tongbin Zhao, et al. "An Automated Approach for Mapping Mining-Induced Fissures Using CNNs and UAS Photogrammetry." Remote Sensing 16, no. 12 (2024): 2090. http://dx.doi.org/10.3390/rs16122090.

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Understanding the distribution and development patterns of mining-induced fissures is crucial for environmental protection and geological hazard prevention. To address labor-intensive manual inspection, an automated approach leveraging Convolutional Neural Networks (CNNs) and Unmanned Aerial System Photogrammetry (UASP) is proposed for fissure identification and mapping. Initially, the ResNet-50 network was employed for the binary classification of the cropped UASP orthophoto images. A comparative analysis was conducted to determine the optimal model between DeepLabv3+ and U-Net. Subsequently,
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Fokin, P. A. "Disjunctive dislocations in Upper Cretaceous rocks of the Chufut-Cale plateau northeastern slope (Bakhchisaray distr., Crimea)." Moscow University Bulletin. Series 4. Geology, no. 3 (August 7, 2023): 22–30. http://dx.doi.org/10.55959/msu0579-9406-4-2023-63-3-22-30.

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The paper contains description of systems fissures and low-amplitude faults in Upper Cretaceous rocks of Chufut-Cale “cave town” outskirts. Analysis of orientation and kinematics of breaks and fissures’ parageneses allowed to restore stress-fields of Alpine tectonic epoch and their rough order. A guess of sublatitudinal compression appearance in Mountaineous Crimea was suggested.
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Maulana, Baso Rezki, Muhammad Sulhuzair Burhanuddin, and Muh Fikri Akbar. "Lineament Density and Implications for the Distribution of Ground Fissures After 2021 MW 7.3 Flores Sea Earthquake on Kalaotoa Island, Indonesia." Journal of Geoscience, Engineering, Environment, and Technology 8, no. 1 (2023): 17–26. http://dx.doi.org/10.25299/jgeet.2023.8.1.10849.

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A 7.3 MW earthquake occurred at 11:20 am on December 14, 2021, in the Flores Sea, and the main shake was centered ±100 km north of Maumere, Indonesia, with a depth of 14.3 km, antecedent a landslide. This research consists of two stages, namely: quantitative data collection in the form of tectonic lineament density measurements using Shuttle Radar Topography Mission (SRTM) data which is extracted manually using GIS-based applications, and qualitative data in the form of field observations which include strike-dip measurements of rocks, lithological data, morphological conditions, ground fissur
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Einarsson, Páll, and Ásta Rut Hjartardóttir. "Structure and tectonic position of the Eyjafjallajökull volcano, S-Iceland." Jökull 65, no. 1 (2015): 1–16. http://dx.doi.org/10.33799/jokull2015.65.001.

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The Eyjafjallajökull volcano, one of the oldest active volcanoes in Iceland, is located in the volcanic flank zone of South Iceland, a few tens of kilometers south of the nearest branch of the mid-Atlantic plate boundary. It is an elongated, broad cone of about 1650 m height. A 100–200 m thick glacier covers the upper part of the volcano and its elliptical 2.5–km-wide summit crater or caldera. An E–W trending rift zone transects the volcano, but a few radial fissures are observed around the summit area. Eruptive fissures on the west flank are curved and tend to be aligned along the maximum gra
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Dissertations / Theses on the topic "Orientation des fissures"

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Hawi, Hanan. "Μοdélisatiοn de transfert de matières dissοutes et particulaires dans un milieu fracturé". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMLH09.

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Pour faire face aux problèmes émergents de pollution et de dégradation de la qualité des eaux, il est nécessaire de maîtriser le fonctionnement hydrogéologique des roches réceptrices de polluants. Cela implique de définir la vulnérabilité des aquifères et d'optimiser la modélisation des phénomènes de rétention et des mécanismes de transport des particules dans les roches. Dans les aquifères karstiques, les fractures servent de voies préférentielles pour les particules, permettant ainsi leur transport rapide. Le transport des particules et de la matière dissoute dans les fractures est régi par
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Guenet, Thomas. "Modélisation du comportement des bétons fibrés à ultra-hautes performances par la micromécanique : effet de l'orientation des fibres à l'échelle de la structure." Thesis, Université Laval, 2016. http://www.theses.fr/2016PESC1006/document.

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Cette thèse s’inscrit dans le contexte d’une optimisation industrielle et économique des éléments de structure en BFUP permettant d’en garantir la ductilité au niveau structural, tout en ajustant la quantité de fibres et en optimisant le mode de fabrication. Le modèle développé décrit explicitement la participation du renfort fibré en traction au niveau local, en enchaînant une phase de comportement écrouissante suivie d'une phase adoucissante. La loi de comportement est fonction de la densité, de l'orientation des fibres vis-à-vis des directions principales de traction, de leur élancement et
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Gavérina, Ludovic. "Caractérisation thermique de milieux hétérogènes par excitation laser mobile et thermographie infrarouge." Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0012/document.

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De nos jours, les matériaux composites sont très largement utilisés dans l’industrie aéronautique et aérospatiale car ils ont de très bonnes tenues mécaniques, mais ces matériaux comportent de fortes hétérogénéités dues aux fibres et aux liants qui les constituent. Ainsi, depuis de nombreuses années, l’équipe TIFC «Thermal Imaging Fields and Characterization » du département TREFLE de l’institut I2M développe des méthodes de mesure des propriétés thermophysiques de matériaux hétérogènes dans le plan ou dans l’épaisseur. Ces méthodes sont très variées du point de vue des méthodes inverses (tran
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Rafacho, Marina Bigeli. "A internet como um recurso de acesso à informação para pais de crianças com fissura labiopalatina." Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/61/61132/tde-19072012-150156/.

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Objetivo: elaborar e avaliar um website com material informativo sobre fissura labiopalatina para pais de crianças de um mês a dez anos de idade. Participantes: 100 pais ou acompanhantes de pacientes com fissura labiopalatina em tratamento no HRAC-USP. Metodologia: o projeto foi realizado em duas etapas: elaboração do website abordando 11 temas, de forma clara e com vocabulário acessível, e avaliação do mesmo pelos participantes. Resultados: A maioria dos participantes encontrava-se na faixa etária dos 20 aos 59 anos de idade (98%), eram mães (75%), haviam completado o ensino médio (61%), res
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Osterman, Fredrik. "The Impact of Fracture Orientation on the Choice of Grout Fan Geometry - a Statistical Analysis." Thesis, KTH, Jord- och bergmekanik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-259668.

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Water ingress into rock tunnels is a problematic phenomenon – especially in urban areas – as a lowered groundwater table may cause harmful settlements. Furthermore, too much ingress can be an incentive for the environmental court to halt the tunnel process, in order to protect the nature as part of a national interest.Water ingress is normally lowered by injecting a water and cement mixture into boreholes in the rock mass – a process called rock grouting – thus sealing the rock fractures. Very little information and research has been on the subject of how the rock fracture orientation interact
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Трубенко, О. М. "Тектонічна тріщинуватість гірських порід внутрішньої зони Передкарпатського прогину як критерій оцінки перспектив нафтогазоносності". Thesis, Івано-Франківський національний технічний університет нафти і газу, 2000. http://elar.nung.edu.ua/handle/123456789/3895.

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Дисертація присвячена вивченню характеру розподілу тектонічної тріщинуватості крейдово-палеогенових відкладів у Внутрішній зоні Передкарпатського прогину. У дисертації вдосконалено існуючу класифікацію тектонічних тріщин. Вперше в роботі встановлено характер розподілу густоти тріщинуватості гірських порід в межах окремих структур і в цілому для Внутрішньої зони. У дисертації показано на картосхемах і картах зв’язок між ділянками підвищеної густоти тріщинуватості в приповерхневих структурах та густотою тектонічних порушень на глибині з ділянками відкритих покладів нафти і газу, а також з перспе
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Chieragatti, Rémy. "Influence de l'orientation cristallographique sur le comportement en fatigue oligocyclique du mar-m200 monocristallin." Paris, ENMP, 1987. http://www.theses.fr/1987ENMP0024.

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Etude experimentale sur le superalliage soumis a une charge cyclique uniaxiale suivant la direction de croissance 001 et les orientations 111, 011 et 123 a 650 c et 900c. Analyse des courbes d'ecrouissage cyclique. Caracterisation des systemes de glisement associes aux grandes deformations plastiques. Description par un modele de l'influence quantitative de l'orientation sur les courbes, d'ecrouissage cyclique. Mise en evidence du role preponderant de la periode de propagation des fissures sur l'endommagement. Prevision theorique de la duree de vie en fatigue en utilisant des donnees de fissur
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Book chapters on the topic "Orientation des fissures"

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Kelly, Casey Ryan. "Epilogue." In Caught on Tape. Oxford University PressNew York, 2023. http://dx.doi.org/10.1093/oso/9780197677865.003.0006.

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Abstract I conclude by illustrating what it would entail for us to, in Žižek’s words, “traverse the fantasy” of postracial and postfeminist culture to bring about a productive reckoning with the horrors, fissures, and failures of the Symbolic—to cease attributing the Other with the possession of the lost object and to transform white masculinity’s relationship to the death drive. In this Epilogue, I consider the implications of calling back the law of the paternal signifier in relation to the Other’s enjoyment. Part of the problem with prescribing political alternatives is that prohibition is the ultimate source of enjoyment for the transgressor. I suggest that one healthy route is to create space for indifference to the Other’s enjoyment—not so much a matter of ignoring the law as much as it is a refusal to look, so as to change our psychical orientation toward the death drive.
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Lumsden, Linda F., and Andrew F. Bennett. "Flexibility and Specificity in the Roosting Ecology of the Lesser Long-Eared Bat, Nyctophilus geoffroyi: A Common and Widespread Australian Species." In Functionaland Evolutionary Ecology of Bats. Oxford University PressNew York, NY, 2006. http://dx.doi.org/10.1093/oso/9780195154726.003.0016.

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Abstract An increasing body of literature suggests that tree-cavity roosting bats are selective in their use of roosts. By comparing aspects of roosting ecology for which there is a high level of specificity with those where roost use appears more flexible, we may gain a better understanding of the key influences on roost selection. Here we review eight studies on the roosting ecology of the lesser long-eared bat, Nyctophilus geoffroyi, a common and widespread vespertilionid in Australia. Nyctophilus geoffroyi is flexible in the distribution of roost sites, with roosts occurring in urban, rural, and a wide range of natural environments. While predominantly roosting in tree cavities, individuals (especially males) also use other natural and artificial roost sites. Tree roosts include a range of forms and orientations, but roosts located under bark and in fissures are common, frequently with a northerly orientation. A strong preference is shown by both sexes for roosts in dead trees, and entrance dimensions of roosts are consistently narrow (2.5–2.8 cm). Males predominantly roost solitarily, while females form larger colonies, especially while breeding. In some studies, females displayed a significant preference for roosts in larger trees, especially for maternity roosts, but this pattern was not consistent in all areas. In all studies, individuals shifted roosts frequently (every 1–2 days), and these roosts occurred within restricted areas. We suggest that key influences on roosting ecology for this species are the thermal requirements of roosts, the risk of predation, social organization within populations, and the pattern of roost availability in the landscape.
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Hassan, Waïl S. "Introduction." In Arab Brazil. Oxford University PressNew York, 2024. http://dx.doi.org/10.1093/oso/9780197688762.003.0001.

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Abstract How do Arab immigrants fit in Brazil as a society built on racial and cultural mixture? Under the influence of European racial theory, mixture was seen in the late nineteenth and early twentieth centuries as an impediment to national progress. However, in the 1920s Modernists like Oswald de Andrade described it as an enriching kind of cultural anthropophagy, and in the early 1930s sociologist Gilberto Freyre turned nineteenth-century racial theory on its head by arguing that the special richness and unique character of Brazil was the result of the racial and cultural mixture of Native Brazilian, Portuguese, and African elements—the Portuguese one being itself hybridized through the Arab-Moorish presence in medieval Iberia. Yet the discrimination and stereotyping faced by Arab immigrants in Brazil point to fissures within this notion of mistura that Brazilian Orientalism explains: faced with immigrants who did not fit easily within one of the three recognizable racial groups (Amerindians, Europeans, Africans), Brazilian intellectuals appropriated Euro-American Orientalism to make sense of the Arab presence in Brazil and to define the country’s place in the world. In so doing, they revealed both their overwhelmingly European orientation and their anxiety about the kind of mixing that was being celebrated as Brazil’s defining feature.
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Bouchez, Jean-Luc, and Adolphe Nicolas. "Brittle deformation structures." In Principles of Rock Deformation and Tectonics. Oxford University Press, 2021. http://dx.doi.org/10.1093/oso/9780192843876.003.0003.

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The discontinuous nature of brittle behavior contrasts with the apparent continuous nature of ductile deformation. Continuity is obviously scale dependent. Faults and fractures are common features of discontinuous deformation. They are particularly abundant in near-surface geological formations, that is, settings at low confining pressures. If ductile behaviour happens to be present in the upper crust, for example in clay and gypsum formations, brittle behaviour is not lacking in the deep crust. This is illustrated by dyke emplacement, feldspar crystals affected by fractures in granite magmas, and brittle behaviour of the mantle at Moho level. Discontinuous structures implying no or limited displacement – namely joints, fissures and tensile cracks – are briefly considered first, and faults, on which large displacements may take place are examined in detail. Faults, ductile faults and shear zones are representative strain localization structures. In this chapter, the relationships between brittle structures and the state of stress responsible for their orientation and evolution are discussed. According to its viscosity (‘viscosity’ is often preferred over ‘competence’), the behaviour of a rock is purely brittle, brittle–ductile or purely ductile. These two latter behaviours will be examined in the following chapter. Fractures are preferred fluid-collection sites, hence potential location for mineralization and formation of ore-veins. They are critically important during the formation stage of plutons and volcanos (see Chapter 7) due to silicate melt circulation into fractures.
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Rhys, David A., Nadia St. Jean, Rodolfo Lagos, David Emmons, George A. Schroer, and Richard Friedman. "Chapter 18: Geology of Round Mountain, Nevada: A Giant Low-Sulfidation Epithermal Gold Deposit." In Geology of the World’s Major Gold Deposits and Provinces. Society of Economic Geologists, 2020. http://dx.doi.org/10.5382/sp.23.18.

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Abstract The Round Mountain low-sulfidation epithermal Au deposit occurs within the rhyolitic tuff of Round Mountain (26.86 Ma) on the northeast side of an elliptical volcanic center that has morphology and volcanic facies suggesting it originated as a caldera. The hosting tuff comprises three pyroclastic flow and fall deposits (units T1 to T3). These are overlain successively by lacustrine sediments and volcaniclastic rocks. which may contain paleowater table levels formed at the time of ore formation and a 26.4 Ma postmineralization tuff unit. A linear vertical drop in the basement contact coincides with thick tuff fill and megabreccia, which is interpreted to follow the position of a WNW-trending ring fissure or vent wall that may have focused the locations of subsequent hydrothermal upflow zones. Orebodies are developed in strata-bound zones that are most extensive in poorly welded tuff, focused below overlying impermeable welded tuff in a WNW-trending, gently NW-plunging corridor above and mantling the SW-dipping paleoslope of basement rocks. Ore comprises disseminated pervasive adularia-quartz-pyrite ± illite alteration with electrum. The disseminated mineralization surrounds, and is most intensely developed in association with, a low-displacement extensional fault-vein network composed of conjugate NE- and SW-dipping faults and steeply dipping extensional veins. Vein orientations and kinematic indicators suggest ore formation occurred during localized NE-SW-directed extension that may have been related to late stages of volcanic subsidence, potentially in association with deep resurgent magmatism into ring fissures approximately 0.5 m.y. after deposition of the host tuff sequence.
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"Ernesto Laclau and Chantal Mouffe: The Evolution of Post-Marxism." In Reflections on Post-marxism, edited by Stuart Sim. Policy Press, 2022. http://dx.doi.org/10.1332/policypress/9781529221831.003.0008.

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In their groundbreaking Hegemony and socialist strategy (1985), Ernesto Laclau and Chantal Mouffe develop a new account of radical politics in which the subjective construction of hegemony establishes political conditions, not the objective historical stages and class contexts of traditional Hegelian Marxism. On this basis, they forcefully justify the ‘identity politics’ of contemporary women’s, African-American, gay, and working class groups and organisations and oppose both the hegemony of the new right and the ‘classism’ and revolutionary orientation of the radical left. In their later work, they elaborate their accounts of hegemony and move in new directions. In On populist reason (2005) and The rhetorical foundations of society (2014), Laclau draws on poststructuralist discourse or rhetoric as well as notions of populism or the masses to show that hegemony involves what he terms antagonism, frontiers or we/they oppositions, equivalential logics, and other elements. By contrast, in On the political (2005) and Agonistics: thinking the world politically (with Wagner, 2013), Mouffe elaborates the notion of the fissured subject which, as she and Laclau argued in Hegemony, was constituted by the antagonisms of diverse social movements or the dislocation of social structures; however, her new accounts of the antagonisms or, as she says, ‘agonisms’ dividing the political field forcefully oppose universal norms of rationality or democracy in order to establish a genuine pluralism on a national and a global scale.
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Conference papers on the topic "Orientation des fissures"

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Aten, Quentin. "Facets and Fissures of a Fractured SOI Wafer." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87584.

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This scanning electron micrograph shows a cross section of a cleaved silicon-on-insulator (SOI) wafter. The wafer cleave passed through a partially released device that included the array of etch release holes visible in this image. The patterned monocrystalline silicon layer had a different crystalline orientation than the much thicker monocrystalline silicon substrate. When the wafer was cleaved, substrate silicon fractured along a single crystalline plane, leaving a flat, smooth surface. The patterned layer did not share this crystalline plane, and fractured in many directions resulting in
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Abd-Allah, Mohammed, and Ahmed Abdelrahman. "An Integrated Ensemble Based Prediction Approach to Quantify and Propagate Uncertainties of Naturally Fractured Carbonate Reservoirs." In Middle East Oil, Gas and Geosciences Show. SPE, 2023. http://dx.doi.org/10.2118/213457-ms.

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Abstract Naturally fractured reservoirs are holding most of the hydrocarbon proven reserves worldwide. Field development planning and optimization of fractured reservoirs face significant challenges due to fracture system complexity, high reservoir heterogeneity and multiple recovery mechanisms. Fractured systems generally have multiple sets of fractures in different orientations, multiple apertures ranging from tiny fissures to large fracture conduits resulting in complicated fluid flow. Reservoir modeling plays a key role in field optimization by examining reservoir recovery under various sc
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Kim, D. Y., S. S. Kim, S. M. Seo, et al. "Quantitative Assessment of Anisotropic Elastic Properties of Rock Using Disk Specimens." In 58th U.S. Rock Mechanics/Geomechanics Symposium. ARMA, 2024. http://dx.doi.org/10.56952/arma-2024-0892.

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ABSTRACT: Rocks exhibit anisotropy in various properties, including ultrasonic waves and diametrical deformation in the radial direction. While previous studies have attempted to analyze rock failure and anisotropy using several cores, the aim of this research is to evaluate the properties and anisotropic characteristics of rock materials through non-destructive experimental analysis of a single core. This analysis focuses on three physical properties: diametrical change, P-wave velocity, and compressive elastic modulus. The specimens were shaped into disks, with a diameter of 50 mm and thickn
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