摘要
采用扫描电镜、压汞法和氮吸附法系统研究了南桐矿区不同煤层及同一煤层不同破坏程度分层的孔隙特征。通过扫描电镜研究将煤的孔隙类型分为六种；运用压汞法和氮吸附法研究了煤的孔径分布及孔隙结构与煤的破坏程度、煤岩组成、显微结构和煤的变质程度之间的关系，取得了一些新认识。最后还对煤层的突出倾向及瓦斯抽放的难易程度进行了初步评价。
SEM,mercury intrusion and low temperature N 2 absorption have been used to systematically study proe features of different coal seams and different layers of same coal seam with different broken degree in Nantong Mining Area.Coal proe has been classified into six types under SEM.The relationship between proe diameter distribution and proe texture of coals and broken degree,petrography components,microtexture and metamophic degree of coals has been researched by means of mercury intrusion and low temperature N 2 absorption methods.Some new achievements have been made.In the end,we have made a preliminary assessment of outburst tendency and gas-extraction feasibility of coal seams.
出处
《山东矿业学院学报》
CAS
1997年第2期154-162,共9页
Journal of Shandong University of Science and Technology(Natural Science)
基金
油气藏地质及开发工程国家重点实验室开放研究基金
关键词
孔隙结构
显微结构
变质程度
煤层
南桐矿区
proe texture
microtexture
metamorphic degree
coal seam
Nantong Mining Area
