The Effect of High Loading Rate on the Behaviour and Mechanical Properties of Coal-Rock Combined Body

Table 1

Testing results of coal-rock combined body.

No.	(mm)	(mm)	(kg/m^3)	(km/s)	Impact pressure; (MPa)
A1	48.0	51.2	1886.2	2.1	0.5
A2	48.1	50.9	1909.0	1.8	0.5
A3	48.0	52.4	1862.2	2.4	0.6
A4	48.0	51.3	1852.9	2.0	0.6
A6	48.0	52.2	1871.4	2.1	0.7
A7	48.1	52.4	1901.1	1.9	0.7

Note. : diameter of combined body; : thickness of combined body; : total density of combined body; : longitudinal wave velocity of combined body.