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瓦斯是煤和瓦斯突出的主要能源,研究瓦斯对煤体的作用具有理论和实践意义。实验表明,当煤体吸附瓦斯后发生膨胀变形,其变形规律基本上服从朗格缪尔方程。当解吸瓦斯后,煤体发生收缩变形,基本上服从指数方程。变形值的大小与煤的变质程度、强度和孔隙性质有关。变形值可以作为预测煤体突出危险性的一项指标,并可用于预测抽放瓦斯措施的效果。
Gas is the main energy source of coal and gas outburst. It is of theoretical and practical significance to study the effect of gas on coal. Experiments show that when the coal body absorbs gas expansion and deformation occurs, its deformation basically follows the Langmuir equation. When the gas is desorbed, the coal shrinks and contracts and basically follows the exponential equation. Deformation value of the size and coal metamorphism degree, strength and pore properties. Deformation values can be used as an index to predict the outstanding danger of coal and can be used to predict the effect of gas drainage.