Seepage Flow Properties of a Columnar Jointed Rock Mass in a True Triaxial Experiment

Table 1

Fitting results of the nonlinear Forchheimer equation and calculated values of and .

Sample number	Intermediate principal stress (MPa)	Fitting coefficient (Pa·s·m^-)	Fitting coefficient (Pa·s^2·m^-)	Evaluation coefficient	Intrinsic permeability (m^2)	Nonlinear coefficient; (m^-1)
SS0°	1			0.9987
	2			0.9990
	3			0.9989
	4			0.9967
	5			0.9955
	6			0.9947
SS15°	1			0.9963
	2			0.9995
	3			0.9991
	4			0.9990
	5			0.9963
	6			0.9988
SS30°	1			0.9993
	2			0.9984
	3			0.9995
	4			0.9993
	5			0.9975
	6			0.9961
SS45°	1			0.9990
	2			0.9993
	3			0.9992
	4			0.9995
	5			0.9990
	6			1.0000
SS60°	1			0.9996
	2			0.9989
	3			0.9997
	4			0.9995
	5			0.9991
	6			0.9983
SS75°	1			0.9964
	2			0.9965
	3			0.9982
	4			0.9982
	5			0.9999
	6			0.9992
SS90°	1			0.9979
	2			0.9934
	3			0.9963
	4			0.9981
	5			0.9987
	6			0.9986