Gas hazard in coal production is gas inrush from a stope face and CO2 inrush from driven sandstone in coal-bearing formation.

煤矿生产中的瓦斯灾害，以往是指煤层掘进或回采工作面的瓦斯突出或涌出，以及煤系地层中砂岩掘进时的二氧化碳突出。

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Abstract: in the process of coal mining, fissure water and gas enrichment, storage, transport, water-inrush from coal floor and gas outburst is induced.

摘要：在煤矿开采过程中，裂隙是水及瓦斯富集、存储、运移的场所，是诱发煤层底板突水和瓦斯突出的重要因素。

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Research results for further research on crack Angle on the influence of creep and water-inrush from coal floor and gas outburst prevention provide a theoretical basis.

研究成果为深入研究裂隙角度对蠕变的影响以及预防煤层底板突水和瓦斯突出提供了理论依据。

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