摘要
玉京山地区上二叠统龙潭组中C5煤层孔隙和裂隙都较发育,其孔隙以微孔为主,孔比表面积大,具有较大的吸附气附着空间,孔隙结构为开放孔;而其中的裂隙规模为大型,但裂隙常被方解石充填,致使甲烷的扩散和渗流能力不强,一定程度限制了煤层气的释放。
The pore and fissure are developed in Upper Permian Longtan Formation coal bed C5 ol Yujinshan area. The pore is mainly in microscopic scale, which is larger than surface area, with the large space lor absorp-tion gas. And the pore structure is open. The fissure is in large scale, which is often filled by calcite. So the diffu-sion and seepage ability of methane isn,t intense, which restricts the release of coal bed gas.
出处
《云南地质》
2016年第4期563-569,共7页
Yunnan Geology
