Numerical determination of strength and deformability of fractured rock mass by FEM modeling

摘要: Abstract The strength and deformability of fractured rock masses are important factors in the design construction civil mining structures built or on masses. finite element method (FEM) was applied to study mechanical behavior A damage-softening statistical constitutive model intact implemented FEM code order strain-softening verified against a theoretical solution resulted good agreement. then investigate progressive failure process, scale effect anisotropic characteristics uniaxial compressive (UCS), deformation modulus numerical results showed that representative elementary volume (REV) for is 12 m with an acceptable variation 10%, complete stress–strain curves models greater than REV size were very similar each other. linear relationship also found between UCS modulus. This result seems support idea mass has critical strain corresponding UCS, regardless modulus, direction.