4.5 Article

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

期刊

GEOFLUIDS
卷 2022, 期 -, 页码 -

出版社

WILEY-HINDAWI
DOI: 10.1155/2022/9295411

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资金

  1. National Natural Science Foundation of China [52074277]
  2. Natural Science Foundation of Jiangsu Province [BK20211585]

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The study found that with increasing injection of N-2 and CO2, the range and width of the oxidation zone decreased, and the loose and oxidation zones moved closer to the working face. The migration profile of CO2 and N-2 differed, and under the same inerting flow rate, the effect of CO2 on oxygen reduction was much less significant than that of N-2.
In this paper, the inerting effect and migration law of inert N-2 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 N-2 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 N-2 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 N-2.

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