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Consideration of the Volumetric Changes that Accompany Rock Mass Failure

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Abbreviations

\({\rho _{\text{d}}}\) :

Dynamic rock mass density (kg/m3)

\({\rho _{\text{s}}}\) :

Initial rock mass in situ density (kg/m3)

\(\eta\) :

Porosity

\({\eta _{{\text{eqiv}}}}\) :

Equivalent porosity

\({\eta _{{\text{max}}}}\) :

Maximum porosity achieved by a rock mass. Default 0.4.

\({\varepsilon _{{\text{vsi}}}}\) :

Volumetric strain increment

\({\varepsilon _{{\text{vsi(max)}}}}\) :

Maximum volumetric strain achievable by a rock mass

Ψ:

Dilation angle (degrees)

\({\psi _{{\text{dyn}}}}\) :

Dynamic dilation angle (degrees)

ϕ:

Friction angle (degrees)

\({\sigma _{{\text{ci}}}}\) :

Intact Unconfined Compressive Strength (MPa)

\({\sigma _3}\) :

Minor principal stress magnitude (MPa)

\({E_{{\text{dyn~}}}}\) :

Dynamic deformation modulus (GPa)

\({E_{{\text{in}}\,{\text{situ}}}}\) :

Initial peak in situ rock mass deformation modulus (MPa)

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  1. School of Science, Engineering and Built Environment, Deakin University, Waurn Ponds, VIC, 3216, Australia

    Bre-Anne Louise Sainsbury

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  1. Bre-Anne Louise Sainsbury
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Correspondence to Bre-Anne Louise Sainsbury.

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Sainsbury, BA.L. Consideration of the Volumetric Changes that Accompany Rock Mass Failure. Rock Mech Rock Eng 52, 277–281 (2019). https://doi.org/10.1007/s00603-018-1560-8

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