Experimental Study of Joint Roughness Influence on Fractured Rock Mass Seepage

Table 3

Test value of permeability coefficient of CS-1 sample (unit: ×10⁻⁸ cm/s).

Water pressure (MPa)	Confining pressure (MPa)
	2	4	6	10	15
0.5	2.6403	1.7526	1.2497	0.5867	0.1593
1.0	9.1492	2.6971	1.6380	0.6620	0.1931
1.5	14.8280	3.8188	1.9794	0.6977	0.2565
2		4.6878	2.1414	0.7265	0.3190
2.5		5.7841	2.4469	0.7822	0.3785
3		7.2458	2.7069	0.8305	0.4049
5			4.2924	0.9372	0.4394
7				1.4529	0.5409
9					0.8308