Gravitational stresses in anisotropic rock masses

Amadei, B.; Savage, W. Z.; Swolfs, H. S.

Abstract:

This paper presents closed-form solutions for the stress field induced by gravity in anisotropic rock masses. These rocks are assumed to be laterally restrained and are modelled as a homogeneous, orthotropic or transversely isotropic, linearly elastic material. The analysis, constrained by the thermodynamic requirement that strain energy be positive definite, gives the following important result: inclusion of anisotropy broadens the range of permissible values of gravity-induced horizontal stresses. In fact, for some ranges of anisotropic rock properties, it is thermodynamically admissible for gravity-induced horizontal stresses to exceed the vertical stress component; this is not possible for the classical isotropic solution. Specific examples are presented to explore the nature of the gravity-induced stress field in anisotropic rocks and its dependence on the type, degree and orientation of anisotropy with respect to the horizontal ground surface. ?? 1987.

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Article

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70014631

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Amadei, B.; Savage, W. Z.; Swolfs, H. S.

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English

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International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts

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p.5-14

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Elsevier

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Gravitational stresses in anisotropic rock masses; 1987; Article; Journal; International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts; Amadei, B.; Savage, W. Z.; Swolfs, H. S.