An Experimental Study of Seepage Properties in Crushed Sandstone and Mudstone

Table 2

Porosity (φ) and permeability (k) at various axial displacements for all the specimens.

Specimen number	Properties	Axial displacement (mm)
		10	15	20	25	30	35
A (1 : 0)		0.427	0.396	0.360	0.320	0.275	0.223
	(×10^−14)	94.92	68.43	58.31	30.51	15.34	11.20
B (4 : 1)		0.420	0.387	0.352	0.311	0.266	0.214
	(×10^−14)	47.80	38.40	39.72	18.85	11.81	8.23
C (3 : 2)		0.409	0.377	0.341	0.300	0.254	0.201
	(×10^−14)	45.99	33.81	27.97	16.32	6.31	5.11
D (2 : 3)		0.400	0.368	0.331	0.290	0.244	0.191
	(×10^−14)	21.72	20.35	12.46	9.30	3.94	2.98
E (1 : 4)		0.389	0.356	0.319	0.277	0.231	0.177
	(×10^−14)	12.79	8.94	7.32	4.60	3.34	1.20
F (0 : 1)		0.376	0.343	0.305	0.263	0.216	0.161
	(×10^−14)	6.16	4.71	3.38	2.62	1.06	0.91