Experimental Study of the Characteristic Changes of Coal Resistivity during the Gas Adsorption/Desorption Process

Table 3

Variation of coal resistivity following continuous desorption and isovolumetric desorption.

Experimental method	Equilibrium pressure (MPa)	Content of residual gas (mL/g)	Rate of change
Continuous desorption	0.534	8.57	21.8%
Isovolumetric desorption	0.72	6.23	41.9%