Warning Method of Coal Bursting Failure Danger by Electromagnetic Radiation

Table 1

Physical and mechanical parameters of 4 coal samples.

Sample label	Height/mm	Diameter/mm	Uniaxial compressive strength/MPa	Bursting energy index	Elastic modulus/MPa
LM2#	98.16	49.12	6.801	1.182	3024.1
LM3#	90.4	49.22	13.824	1.875	3572.6
LM4#	80.68	49.3	4.622	1.022	1119.6
LM5#	99.12	49.22	9.811	1.541	3735.5