Abstract: The oxygen concentration method is the most effective and most commonly used method in dividing spontaneous combustion “three zone” in low-gas goaf in engineering practice at present. But this method cannot be directly applied to high-gas goaf, because it neglects gas concentration. Based on the principle of chemical dynamics and theoretical derivation, the division standard of the spontaneous combustion “three zone” in high-gas goaf was proposed, and spontaneous combustion “three zone” in actual high-gas goaf was divided by this standard. The result was tested and verified by measuring and analyzing the temperature of residual coal in goaf. The study provides guidance for prediction and prevention of spontaneous combustion in high-gas goaf.

Key words: oxygen concentration；physisorption；rate of oxygen consumption；high-gas goaf；spontaneous combustion &ldquo, three-zone&rdquo