Permeability of Sand-Based Cemented Backfill under Different Stress Conditions: Effects of Confining and Axial Pressures

Table 4

Results of the orthogonal experiments on permeability.

Experiment No.	Axial pressure (MPa)	Confining pressure (MPa)	Permeability (m^2)
S1	2.5	3.0
S2	3.5	3.0
S3	4.5	3.0
S4	5.5	3.0
S5	2.5	1.0
S6	2.5	2.0
S7	2.5	4.0