Modeling of Subsidence and Stress-Dependent Hydraulic Conductivity for Intact and Fractured Porous Media

摘要: This study investigates the changes in deformation and stress dependent hydraulic conductivities that occur as a result of underground mining intact fractured porous media. The medium is assumed to be comprised regularly packed spherical grains uniform size. variation grain size or pore space due effect changing intergranular stresses results change rock conductivity. A model developed describe sensitivity conductivity effective through Hertzian contact grains. approximated an equivalent fracture network which single idealized planar opening having constant thickness aperture. Changes aperture elastic control presented illustrate coupling between strain Subsidence induced deformations from both These are examined compared with case study.