Compression Mechanical Properties and Constitutive Model for Soft–Hard Interlayered Rock Mass

Table 4

Average porosity of the samples.

Orientation of interface	Porosity of two-layer rock-like (%)	Porosity of three-layer rock-like (%)
0°	14.4	15.6
10°	11.7	13.7
30°	11.6	12.7
45°	10.8	14.5
60°	11.3	12.2