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

Table 4

Cap pressure table of the double-yield gob elements [41].

Strain	0.0	0.02	0.05	0.07	0.1	0.12	0.15	0.17	0.20
Pressure (MPa)	0.0	0.1	0.3	0.6	1.25	2.25	5.0	10.0	20.0
Bulk modulus 0.60 GPa			Shear modulus 0.45 GPa			Friction angle 40°