重庆大学学报：自然科学版2012，Vol.35Issue(7)：114-118,132,6.
含瓦斯煤体渗透率与煤体结构关系的实验
Experiments on the relationship between permeability of gas-bearing coal and coal body structure
摘要
Abstract
Permeability tests of type I to V coal from Jiaozuo coalfield are carried out to study the gas permeability difference of coals with different structures.The experimental results show that the relation curve of permeability to different coal structures show normal distribution,and the value of permeability first increases quickly and then decreases sharply.Type II coal’s permeability is the maximum and that of type V is the minimum.There is little difference of perm abilities of type I,type IV and type V.The concepts of variation coefficient of permeability and permeability ratio are brought in to evaluate the heterogeneity and anisotropy of No.21 coal seam.It found both of them are high,however,the homogeneity of a single type structure coal is good.Mechanisms of gas sub region and banding,gas emission,gas outburst of gas-bearing coal are explained by the permeability differences.Permeability changes are the direct result of pore-fracture development and the major controlling factor of gas distribution,gas emission and coal and gas outburst.关键词
煤体结构/渗透率/变异系数/渗透率级差/非均质Key words
coal structure/permeability/variation coefficient of permeability/permeability ratio/heterogeneity分类
力学引用本文复制引用
吕闰生,彭苏萍,徐延勇..含瓦斯煤体渗透率与煤体结构关系的实验[J].重庆大学学报：自然科学版,2012,35(7):114-118,132,6.基金项目
国家自然科学基金资助项目（41172141）,国家自然科学基金资助项目 （）
河南省生物遗迹与成矿过程重点实验室开放基金资助项目 （）
