Jinneng Holding Coal Industry Group Meiyukou Mine
Shanxi Coal Transportation and Sales Group Science and Technology Research Co.

为了研究煤峪口矿1/3焦煤的临界氧浓度指标，提高矿井的防灭火措施的有效性和针对性，采取煤样程序升温试验的方法，在供氧浓度分别为20.9%、10%、7%时，进行了煤样升温产气规律试验，获得了不同供氧条件下，CO和CO2气体、烯烃气体、烷烃气体、乙炔气体的产生规律。通过对比分析最终得出，煤峪口矿1/3焦煤试验煤样自然发火临界氧气指标为7.0%。

In order to study the critical oxygen concentration index of 1/3 coking coal in Meiyukou Mine and improve the effectiveness and pertinence of fire prevention and extinguishing measures in the mine, the method of coal sample programmed heating experiment is adopted. At oxygen supply concentrations of 20.9%, 10%, and 7%, coal sample heating gas production law experiments are conducted, and the production laws of CO and CO2 gas, olefin gas, alkane gas, and acetylene gas are obtained under different oxygen supply conditions. Through comparative analysis, it is finally concluded that the critical oxygen index for natural ignition of 1/3 coking coal experimental coal sample in Meiyukou Mine is 7.0%.

1 试验条件
2 程序升温煤自燃气体产物规律
2.1 CO、CO2气体产生规律
1)CO气体产生规律
2)CO2气体产生规律
2.2 烯烃气体（C2H4、C3H6）产生规律
2.3 烷烃气体（CH4、C2H6、C3H8）产生规律
2.4 乙炔气体（C2H2）产生规律
3 结论

谢承莹,杨建武,卫伟.基于程序升温试验的自燃气体产生规律及临界氧浓度指标研究[J].山东煤炭科技,2023,41(07):126-128.