Mechanism of Fire Prevention with Liquid Carbon Dioxide and Application of Long-Distance Pressure-Holding Transportation Technology Based on Shallow Buried and Near-Horizontal Goaf Geological Conditions

Table 1

Atmosphere composition for tests on the influence of CO₂ concentration (% by volume).

Experiment	O2 (%)	N2 (%)	CO2 (%)
1	21	79	0
2	15	51.7	33.3
3	9	30	61
4	3	18.2	78.8