摘要
为了研究不同布孔方案对瓦斯抽采的影响,在考虑气体滑脱效应的基础上建立了考虑裂隙、微裂隙的煤体气固耦合控制方程,并以此数学模型为基础,利用COMSOL Multiphysics进行了布孔方案对瓦斯抽采的影响规律研究。研究结果表明,变间距布孔的瓦斯抽采率比等间距布孔的抽采率增加的更加明显,瓦斯抽采率在一定范围内随布孔间距增大而提高。
In order to investigate the effects of different hole arrangement schemes on gas extraction,established a coal-gas coupled control equation considering fractures and micro-fractures in the coal seam on the basis of considering gas slip effect.Based on this mathematical model,the influence law of hole arrangement scheme on gas extraction was studied by using COMSOL Multiphysics.The research results show that the gas extraction rate of variable-spacing borehole layout increases more significantly than that of equal-spacing borehole layout,and the gas extraction rate increases within a certain range as the borehole spacing increases.
作者
韩昀
赵国翔
王晓东
李耀谦
郭春生
贾霖
李克文
Han Yun;Zhao Guoxiang;Wang Xiaodong;Li Yaoqian;Guo Chunsheng;Jia Lin;Li Kewen(College of Energy Resources,China University of Geosciences(Beijing),Beijing 100083,China;College of Petroleum Engineering,China University of Petroleum(Beijing),Beijing 102249,China;Huayang New Material Technology Group Co.,Ltd.,Yangquan 045000,China)
出处
《煤矿机械》
2023年第7期80-85,共6页
Coal Mine Machinery
关键词
布孔方案
瓦斯抽采
数值模拟
滑脱效应
hole arrangement scheme
gas extraction
numerical simulation
gas slip effect
