Study on Impact Tendency of Coal and Rock Mass Based on Different Stress Paths

Table 3

Test of the elastic modulus of coal seam and roof rock samples.

Rock stratum	Serial number						Average elastic modulus (GPa)
	1	2	3	4	5	6
Argillaceous sandstone	9.62	9.88	10.21	10.33	10.01	9.21	9.88
Coal	1.66	1.72	1.68	1.75	1.70	1.72	1.71
Silty sandstone	10.45	9.76	9.57	10.53	10.26	9.29	9.98