钻孔周围瓦斯运移分析
nalysis on the gas flow around the drill
根据气体在多孔介质中的扩散与渗流理论，结合钻孔周围煤体应力分布，从微观和宏观的角度分别对钻孔周围瓦斯的运移特征进行了分析。根据瓦斯气体主要成分的动力学直径和不同矿区的煤体孔隙率，分析了不同矿区煤层的瓦斯扩散模式。运用边界层理论对瓦斯在钻孔周围裂纹中的流动进行了分析，提出了在大裂纹中瓦斯流动的速度分布。提出煤体周围应力变化导致瓦斯扩散和流动模式响应变化。对进行矿井瓦斯抽放和正确认识钻孔周围瓦斯流动有着重要的理论意义。
On the basis of the stress situation around the drill, analyzes the characteristic of gas flow around the drill in microscopic and macroscopic perspective. Analyzes the flow rule in different coal mine, combined with the kinetic diameter of gas and porosity of coal from different mine. On the basis of boundary layer theory, analyzes the gas flow rule in big fracture. And obtaines the gas flow velocity distribution in the fractures around the drill. And proposed that gas flow rule would change with the stress situation around the drill. It has important significance to understand the gas flow around the drill and to drainage the gas in coal mine.
冯占文、马衍坤、宋大钊、马衍乾、徐文全
矿业工程理论与方法论矿山压力、矿山支护矿山开采
瓦斯流动渗流裂隙速度分布
gas flow permeability fracture，velocity distribution
冯占文,马衍坤,宋大钊,马衍乾,徐文全.钻孔周围瓦斯运移分析[EB/OL].(2008-11-21)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/200811-607.点此复制
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