Effects of structure on deformation and strength characteristics of transversely isotropic man-made geomaterials

The laboratory tests on uniaxial and triaxial (Karman scheme) compression of bedded specimens (made of equivalent man-made geomaterial, meta-siltstone and shale) has allowed deriving relations between the strength and deformation characteristics and the bedding angle of the specimens. The elasticity...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2017-02, Vol.53 (1), p.12009
Main Authors: Usoltseva, OM, Tsoi, PA, Semenov, VN
Format: Article
Language:English
Subjects:
Compression
Compression tests
Criteria
Deformation
Deformation effects
Geomaterials
Laboratory tests
Lateral pressure
Mechanical properties
Modulus of elasticity
Poisson's ratio
Shale
Siltstone
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Summary:The laboratory tests on uniaxial and triaxial (Karman scheme) compression of bedded specimens (made of equivalent man-made geomaterial, meta-siltstone and shale) has allowed deriving relations between the strength and deformation characteristics and the bedding angle of the specimens. The elasticity and strength are assessed in accordance with the theoretical model by Salamon-Tien and the Hoek-Brown failure criterion. For the bedded geomedia (man-made geomaterial), the Salamon-Tien model yields a satisfactory estimate of the elastic characteristics (elasticity modulus, Poisson's ratio). Based on the use of the Hoek-Brown criterion, the authors have derived a strength parameter independent of the lateral pressure.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/53/1/012009