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Rock Mechanics and Rock Engineering

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25.02.2017 | Technical Note

Numerical Study of Biot’s Coefficient Evolution During Failure Process for Aue Granite Using an Empirical Equation Based on GMR Method

verfasst von: Xin Tan, Heinz Konietzky

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 6/2017

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Most rocks are saturated, and the internal cracks, pores and cavities are filled with various fluids. Therefore, hydromechanical coupling between pore pressure variation and rock deformation cannot be ignored in various kinds of engineering applications such as underwater construction, oil/gas exploitation, radioactive waste storage (Adelinet et al. 2011). The theoretical basis for the hydromechanical coupling is Biot’s theory (Eq. 1), which is based on the principle of effective stresses (also named theory of poroelasticity, Biot 1955, Biot and Willis 1957):

$$\sigma_{ij} ' = \sigma_{ij} - \alpha_{ij} p_{p}$$

(1)

where Biot’s tensor α _ij describes the influence of fluid pressure on the anisotropic elastic solid matrix. It is the key parameter of poroelastic theory. …

Vorheriger Artikel Effect of Loading Rate on the Felicity Effect of Three Rock Types

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Titel: Numerical Study of Biot’s Coefficient Evolution During Failure Process for Aue Granite Using an Empirical Equation Based on GMR Method
verfasst von: Xin Tan
Heinz Konietzky
Publikationsdatum: 25.02.2017
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 6/2017
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-017-1189-z

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