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Erschienen in: Rock Mechanics and Rock Engineering 6/2016

14.08.2015 | Technical Note

Assessment of Inherent Anisotropy and Confining Pressure Influences on Mechanical Behavior of Anisotropic Foliated Rocks Under Triaxial Compression

verfasst von: Davood Fereidooni, Gholam Reza Khanlari, Mojtaba Heidari, Ali Asghar Sepahigero, Amir Pirooz Kolahi-Azar

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 6/2016

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The compressive strength and deformability are the most important mechanical properties of rocks in engineering applications. The critical factors influencing these parameters include constituent mineral composition, porosity, water content, temperature, anisotropy, and confining pressure (Li et al. 2012). Some rocks show well-defined fabric elements in the form of bedding, stratification, layering, foliation, fissuring or jointing. In general, these anisotropic rocks have physical, mechanical and hydraulic properties that are varied in different directions. Metamorphic rocks usually display the highest degree of anisotropy (Ramamurthy et al. 1993). The strength anisotropy of various rock types has been studied in compression tests by different researchers such as Donath (1964), McLamore and Gray (1967), Hoek (1968), Attewell and Sandford (1974), and Brown et al. (1977) on shales and slates, Ramamurthy et al. (1988) on phyllites, Akai et al. (1970), McCabe and Koerner (1975), Behrestaghi et al. (1996), Nasseri et al. (1997, 2003), Singh et al. (2001) and Zhang et al. (2011) on gneisses and schists. A review of the mentioned work shows that the maximum failure strength occurred when anisotropy angle (β) equals to 0°or 90° and it reaches to the minimum point when anisotropy angle (β) is about 30°. …

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Metadaten
Titel
Assessment of Inherent Anisotropy and Confining Pressure Influences on Mechanical Behavior of Anisotropic Foliated Rocks Under Triaxial Compression
verfasst von
Davood Fereidooni
Gholam Reza Khanlari
Mojtaba Heidari
Ali Asghar Sepahigero
Amir Pirooz Kolahi-Azar
Publikationsdatum
14.08.2015
Verlag
Springer Vienna
Erschienen in
Rock Mechanics and Rock Engineering / Ausgabe 6/2016
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI
https://doi.org/10.1007/s00603-015-0814-y

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