Which gas is primarily increased in concentration when sealing an area affected by mine fire?

When sealing an area affected by a mine fire, the concentration of carbon dioxide increases significantly due to the combustion process. Fires in mines typically consume oxygen and produce carbon dioxide as a byproduct of burning organic materials and other substances. As the fire burns and exhaust gases accumulate in the sealed area, the oxygen level decreases while carbon dioxide levels rise.

Maintaining the stability of mine atmosphere and safety involves monitoring these gases, as increased carbon dioxide can pose health risks to miners and complicate firefighting efforts. Understanding the dynamics of gases in mine fires is crucial for effectively managing emergencies and ensuring the safety of personnel involved in firefighting operations or recovery efforts in affected areas.