Rocscience rs2 download with crack11/1/2023 One result of adopting transverse anisotropy is the recognition of significantly different patterns of stress redistribution around rectangular roadways such as those used in coal mining. This paper presents an approach to examining the deformation and support of highly stressed sedimentary rock that assumes an anisotropic continuum with an equivalent Independent Shear Modulus (E/G) readily calculated from the spacing of the layer discontinuities and joint stiffness in the order of 1000 MPa/m. Although this type of rock can never be considered as an isotropic continuum, it is also not practical to explicitly model all the possible discontinuities as joints. In addition to there being a discernible texture within the matrix, layers can be in the form of discontinuities with spacing sometimes measuring less than 10 cm. Seedsman Geotechnics Pty Ltd, Mittagong, Australiaįine-grained sedimentary rocks such as mudstones and sandstones are layered and of relatively low strength.
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