Experimental Investigation on Sandstone Permeability under Plastic Flow: Permeability Evolution Law with Stress Increment

Table 8

Experimental values, estimated values, and relative errors of the permeability.

State	Permeability (m^-2)
	Experimental values	Single-step estimated values	Relative error (%)
			—
			16.5%
			0.28%
			0.41%
			0.26%
			0.22%
			1.20%