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针对近年来采煤过程中出现的CO气体异常涌出现象,设计了在25℃条件下恒温充氮解吸装置和井下隔氧取样方法,测定了深部煤样含有可解吸的CO气体总量,为了排除取样过程中氧化CO气体可能造成的误差,采用恒温氧化实验进行辅助,通过实验结果和计算得出,所取煤层中每吨煤至少含0.15 L原生CO气体,证明了煤层原生赋存CO气体的存在。
In view of the abnormal emission of CO gas during the coal mining in recent years, constant temperature nitrogen and desorption devices and downhole oxygen sampling method were designed at 25 ℃. The total amount of desorbed CO gas in deep coal samples was determined. Excluding the possible error caused by oxidized CO gas in the sampling process, the experiments were performed with the help of a constant temperature oxidation experiment. The experimental results and calculations show that the coal seam contains at least 0.15 L of primary CO gas per tonne of coal, demonstrating that the CO gas The presence.