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

Table 4

Comparison of ignition activation energy between coal samples without inhibitor and with 4% CaCl₂ inhibitor.

Coal sample	No blocking agent coal		After adding inhibitor coal		Change in activation energy
	No. 1 (reference)	122.62	0.947295	137.07	0.957907	14.85
No. 2 (reference)	118.57	0.995854	127.04	0.932112	8.47
No. 3 (reference)	117.19	0.980744	91.99	0.994968	-25.2
No. 5 (15# layer)	140.57	0.994579	128.76	0.990811	-11.81
No. 6	134.86	0.992412	133.20	0.935610	-1.66
No. 8	141.80	0.992549	138.46	0.988901	-3.34
No. 9	132.34	0.993876	128.14	0.988914	-4.2