Study on Spontaneous Combustion Law and Prevention Technology of Abandoned Coal in Goaf of Coal Mine

Table 6

Comparison of ignition activation energy between coal samples without inhibitor and with 15% MgCl₂ inhibitor.

Coal sample	No blocking agent coal		After adding inhibitor coal		Change in activation energy
	No. 1 (reference)	122.62	0.947295	152.71	0.966805	30.09
No. 2 (reference)	118.57	0.995854	194.32	0.969737	75.75
No. 3 (reference)	117.19	0.980744	209.41	0.970496	92.22
No. 5 (15# layer)	140.57	0.994579	178.64	0.975889	38.07
No. 6	134.86	0.992412	188.52	0.961331	53.66
No. 8	141.80	0.992549	196.24	0.943866	54.44
No. 9	132.34	0.993876	184.04	0.974814	51.7