| 穿层钻孔周围煤体次生应力变形及瓦斯流动规律的研究 |
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| 引用本文： | 周晓军,马心校.穿层钻孔周围煤体次生应力变形及瓦斯流动规律的研究[J].重庆大学学报(社会科学版),1995,1(5). |
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| 作者姓名： | 周晓军 马心校 |
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| 作者单位： | 重庆大学资源及环境工程学院，重庆大学资源及环境工程学院 重庆，630044，重庆，630044 |
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| 摘 要： | 从煤层钻孔周围煤体发生的次生应力和变形出发,建立了受煤体次生应力、瓦斯压力等因素影响的煤体变透气性系数的新数学模型,并以此改进了钻孔周围瓦斯流动的本构方程。通过对白皎煤矿20102试验区穿层钻孔周围瓦斯流场的解算,证明该模型和本构方程与实际相符,同时对常、变透气性也做了对比。
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| 关 键 词： | 次生应力 变形 本构方程 透气性系数 数学模型 瓦斯流动 |
Study on Methane Flow Regularity and Secondary Stress and Deformation of Coal Bady around Penetration Boreholes in Coal Seam |
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| Zhou Xiaojun Ma Xinxiao.Study on Methane Flow Regularity and Secondary Stress and Deformation of Coal Bady around Penetration Boreholes in Coal Seam[J].Journal of Chongqing University(Social Sciences Edition),1995,1(5). |
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| Authors: | Zhou Xiaojun Ma Xinxiao |
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| Institution: | Zhou Xiaojun Ma Xinxiao |
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| Abstract: | A new mathematical model for the coefficient of variable permeability affected by coal body, secondary stress & pressure in coalseam & a constitutive equation for gas migration are improved on the basis of the Secondary stress & deformation of coal body around boreholes in coalseam. Using this model and equation,the gas flow field belongs to the 20102 experimental zone in BaiJiao coal Mine is computed & this verifies that the model & constitutive equation are both agreeable to practical results. Stmultaneotisly, a-comparison between the variable and constant permeabilities is carried out. |
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| Keywords: | secondary stress deformation constitutive equation permeability coefficient mathematical model methane flow |
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