Study on Spontaneous Combustion Risk Areas in Narrow Coal Pillar-Utilized Deep Mining and Double-Pipe Liquid CO
            <sub>2</sub>
            Injection Technology

Liu, Yang; Qi, Xuyao; Luo, Dayong; Zhang, Yongqing; Ma, Bin

doi:10.1080/00102202.2024.2347598

Combustion Science and Technology

2024

DOI: 10.1080/00102202.2024.2347598

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Study on Spontaneous Combustion Risk Areas in Narrow Coal Pillar-Utilized Deep Mining and Double-Pipe Liquid CO ₂ Injection Technology

Yang Liu,

Xuyao Qi,

Dayong Luo

et al.

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Experimental Study on the Inerting Effect of Premixed Inert Gas of CO2 and N2 in Goaf

Shi,

Zhao

2024

Fire

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As the conventional inert gas, it is used for the prevention and control of coal’s spontaneous combustion, mainly N2 and CO2. However, there is limited research focusing on the inerting effect of composite inert gas. This paper studied the impact of using a premixed inert gas (N2 accounted for 50%, 60%, 70%, and 80%) instead of CO2 on the inerting effect of nearly horizontal and gently inclined goaf by building a physical similarity simulation experiment platform. The experimental results showed that the inerting effect of premixed inert gas was better than that of CO2. For instance, in a nearly horizontal goaf, the inerting effect of the premixed inert gas was optimal when the N2 accounted for 70%. The average O2 concentration in the monitored area decreased from 9.7% with CO2 to 6.4%. In addition, in the gently inclined goaf, the premixed inert gas exhibited an accumulation state similar to CO2, primarily occurring in the lower part region adjacent to the working face. Furthermore, the accumulation state of premixed inert gas was inversely proportional to its inerting effect. This study has important reference significance for applying inert gas fire prevention and extinguishing technology in mines.

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Experimental Study on the Inerting Effect of Premixed Inert Gas of CO2 and N2 in Goaf

Shi,

Zhao

2024

Fire

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Study on Spontaneous Combustion Risk Areas in Narrow Coal Pillar-Utilized Deep Mining and Double-Pipe Liquid CO ₂ Injection Technology

Cited by 1 publication

References 45 publications

Experimental Study on the Inerting Effect of Premixed Inert Gas of CO2 and N2 in Goaf

Experimental Study on the Inerting Effect of Premixed Inert Gas of CO2 and N2 in Goaf

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Study on Spontaneous Combustion Risk Areas in Narrow Coal Pillar-Utilized Deep Mining and Double-Pipe Liquid CO 2 Injection Technology

Cited by 1 publication

References 45 publications

Experimental Study on the Inerting Effect of Premixed Inert Gas of CO2 and N2 in Goaf

Experimental Study on the Inerting Effect of Premixed Inert Gas of CO2 and N2 in Goaf

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Product

Resources

About

Study on Spontaneous Combustion Risk Areas in Narrow Coal Pillar-Utilized Deep Mining and Double-Pipe Liquid CO ₂ Injection Technology