Stress-dependent permeability of coal fracture networks: A numerical study with Lattice Boltzmann method

Since coal permeability is sensitive to stress, fundamental understanding of gas flow in coal fracture networks and permeability change with varying effective stress are necessary in the processes of CBM production. Based on the rock elastic theory and finite difference method, the stress-strain model of reconstructed coal fracture networks is established. It has provided a more accurate geometry model under stress condition. For comparison...