Permeability Enhancement and Gas Drainage Effect in Deep High Gassy Coal Seams via Long-Distance Pressure Relief Mining: A Case Study

<div>The failure criterion of the Mohr–Coulomb criterion and the behavior exhibited by the double-yield. (a) Mohr-Coulomb model. (b) Double yield model.</div>

Advances in Civil Engineering

fig6

Figure 6

Figure 6: Permeability Enhancement and Gas Drainage Effect in Deep High Gassy Coal Seams via Long-Distance Pressure Relief Mining: A Case Study 