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针对山东唐口煤矿1305综放工作面停产期间出现煤自然发火异常的情况,提出了采用注液态CO2治理综放工作面停产期间自然发火隐患,研究结果表明,采用液态CO2进行防灭火能够有效降低各类指标气体的浓度和温度,氧气体积分数由16.2%降低到8.2%,CO体积分数由39×10-6降低到8×10-6,温度由29.5℃降低到16.3℃,有效消除了工作面停产期间煤的自然发火隐患,保证了工作面停产期间的安全。
Aiming at the abnormal occurrence of spontaneous combustion of coal during the shutdown of 1305 fully mechanized top coal caving face in Tangkou Coal Mine in Shandong Province, the paper puts forward the suggestion of using liquid CO2 to control the natural fire hazards during the shutdown of fully mechanized top coal caving face. The results show that the use of liquid CO2 for fire prevention can be effectively reduced The concentration and temperature of all kinds of indicators gas decreased from 16.2% to 8.2%, CO volume fraction decreased from 39 × 10-6 to 8 × 10-6, and the temperature decreased from 29.5 ℃ to 16.3 ℃, effectively eliminating the work Face during the shutdown of natural coal fire hazards, to ensure the safety of the face during shutdown.