Study on the Inerting Effect and Migration Law of Nitrogen and Carbon Dioxide in Large Inclined Goaf by Physical Simulation Model.

In this paper, the inerting effect and migration law of inert N₂ and CO₂ in large inclined goaf are studied using a physical simulation model. The differences in oxygen reduction and inert gas migration are analyzed and compared. The results show that as N₂ and CO₂ injection increased, the oxidation zone's range and width shrunk, and the end of the loose and oxidation zones moved closer to the working face. The migration profile of CO₂ and N₂ resembled a trumpet and an L shape, respectively, and under the same inerting flow rate, the effect of CO₂ inerting on oxygen reduction was much less significant than that of N₂. [ABSTRACT FROM AUTHOR]