延期性煤与瓦斯突出是瓦斯突出的一种特殊类别,和即时性煤与瓦斯突出不同。延期性煤与瓦斯突出是在突出危险煤层中采掘作业时,受外力诱导,没立即发生突出,而是间隔一段时间后发生的瓦斯突出。延期性突出对煤矿安全危害极大,而且不易预防。目前对其机理和防治措施的研究尚不完善。 Postponement of coal and gas outburst is a special category of gas outburst, and the immediate nature of coal and gas outburst are different. The delaying coal and gas outburst are induced by external force when they are excavated in the dangerous coal seam. There is no immediate occurrence of gas outburst, but gas outbursts occurred after an interval of time. Prominent extension of the great harm to the safety of coal mines, and not easy to prevent. At present, the research on its mechanism and prevention measures is not perfect.