煤层原生CO气体存在性研究

Study on Existence of Coal Seam Primal CO Gas

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 recent years, CO gas abnormally flow out of coal seam during coal mining process. Isothermal nitrogen injection desorption device was designed, underground air quarantine sampling method was introduced, the total desorpted CO gas of deep coal sample was measured. To eliminate the error interference of CO produced during oxidation in sampling process, use isothermal oxidation experiment as supplementary method, by the experimental results, primal CO occurrenced in coal seam was 0.15 L per ton, which proved the existence of primal CO.