Experimental Research on the Mechanical Characteristics and the Failure Mechanism of Coal-Rock Composite under Uniaxial Load

Table 1

Physical and mechanical parameters of single coal and rock samples.

Category	Sample number	Size (mm)	Poisson’s ratio	Compressive strength (MPa)	Elastic modulus (GPa)
Standard rock	A-1	50 × 99.34	0.22	78.32	9.26
	A-2	50 × 100.12	0.24	80.86	11.24
	A-3	50 × 99.86	0.22	61.65	8.16
Standard coal	B-1	50 × 98.86	0.28	16.59	1.47
	B-2	50 × 99.56	0.29	21.41	3.23
	B-3	50 × 99.60	0.31	19.48	2.72