孔隙气压对煤层气体渗透性影响的实验研究  

Experimental Study on Influence of Pore Gas Pressure upon Gas Permeability of Coal Seam

作　　者：隆清明[1] 赵旭生[1] 牟景珊[1] 

机构地区：[1]煤炭科学研究总院重庆研究院,重庆400037

出　　处：《矿业安全与环保》2008年第1期10-12,共3页Mining Safety & Environmental Protection

基　　金：国家重点基础研究发展计划(973计划)项目(2005CB221502)

摘　　要：运用瓦斯渗透测试设备,进行孔隙气压对煤体渗透性影响的实验研究。阐述了可控孔隙气压下煤渗透性实验的方法与过程,研究表明,煤的渗透率随孔隙气压增大而减小的特性是由孔隙气压变化引起滑脱效应和孔隙结构本身变化所致。Experimental study was conducted on the influence of pore gas pressure upon gas permeability with gas permeation test device. This paper described the method and process of the gas permeation test of coal at controlled pore gas pressure. The study showed that the reduction of the gas permeation rate of coal with the increase of pore gas pressure resulted from the decollement effect produced by pore gas pressure variation and the pore structure.

关 键 词：煤层气 气体渗流 孔隙气压 滑脱效应 

分 类 号：TD712.6[矿业工程—矿井通风与安全]