煤中氢气氦气释放现象的研究

Study on the Release Phenomenon of Hydrogen and Helium in the Coal

煤中普遍存在着氢气氦气的释放。并且在受采支影响的情况下,氢气氦气的释放发生异常变化。氦气具有较稳定的化学性质及很强的扩散渗透能力;煤体内部急剧的物理化学变化引起氢气浓度变化,在应力集中带氢气浓度明显升高。通过研究氢气氦气的异常释放。

The release of hydrogen and helium from coal universally exists.In the effect of mining,the release of hydrogen and helium changes abnormally,The helium has steady chemical property and strong diffusibility as well as penetrability.The sudden physical and chemical change arouses the change of hydrogen′s concentration and their concentration raises obviously in the area of stress concentration.On the study of such abnormal release,an technology would be found to pre-warm the outburst of coal and gas effectively.