Mechanical Damage Test and Model Study of Layered Composite Rock Based on Acoustic Emission and DIC Characteristics

Table 1

Main physical and mechanical parameters of original rock and similar rock specimens.

Rock type	Uniaxial compressive strength (MPa)	Elastic modulus (GPa)	Poisson’s ratio	Density (g·cm^−3)
Sandstone	182.22	20.18	0.27	2.59
Sandstone-like	43.37	5.46	0.26	2.14
Mudstone	152.71	15.43	0.31	2.48
Mudstone-like	34.26	4.27	0.30	2.03