非等温吸附变形条件下瓦斯运移多场耦合模型研究  

The research of gas migration multi-physics coupling model under the non-isothermal adsorption distortion

作　　者：秦玉金[1,2] 罗海珠[1] 姜文忠[1] 田富超[1] 

机构地区：[1]煤炭科学研究总院沈阳研究院,辽宁沈阳110016 [2]辽宁工程技术大学安全科学与工程学院,辽宁阜新123000

出　　处：《煤炭学报》2011年第3期412-416,共5页Journal of China Coal Society

基　　金：国家重点基础研究发展计划(973)(2011CB201206);国家科技重大专项"大型油气田及煤层气开发"(2008ZX0540-01;2008ZX0540-02)

摘　　要：基于已有相关渗流理论和多物理场耦合理论,初步探讨了煤体的吸附解吸变形及温度对瓦斯含量的影响,并建立了关于应力场、渗流场和温度场之间瓦斯运移的多物理场耦合模型,借助数值分析软件(Comsol Multiphysics)对模型进行了有限元分析求解,分析了淮南矿业集团潘三煤矿13-1煤层瓦斯压力、含量等随埋深的变化规律及煤层温度和煤的吸附变形对瓦斯分布的影响。结果表明:该模型模拟结果与煤层实际瓦斯赋存特征基本相符。Based on percolation theory and the related multi-physics coupling theory,discussed the adsorption and desorption of coal deformation and temperature on gas content,and established the gas migration multi-physics coupling model which was among the stress field,flow field and temperature field,and used numerical analysis software Comsol Multiphysics to carry on the finite element analysis and solution of the model,analyzed the influence of gas distribution about gas pressure and content of the variation with depth,temperature and coal seam deformation on the adsorption of gas distribution in Huainan Mining Industry Co.Ltd.Pansan Coal Mine 13-1 coal seam.The simulation indicates that：the coupling of the model results which consistent with the actual coalbed gas occurrence and migration characteristics.

关 键 词：瓦斯运移 多物理场耦合 数值模型 Comsol MULTIPHYSICS 控制方程 

分 类 号：TD712.5[矿业工程—矿井通风与安全]