摘要
本文在南桐矿区井下煤壁、手标本和煤岩光片观测的基础上，对煤的宏观和微观坏特征以及破坏类型划分进行了研究。采用煤层某一分层的平均破碎程度级别将煤体宏观破坏类型分为两类四型七种。参照构造岩的分类将煤体显微破坏类型分为６类，划分出８种显微结构，描述了各类破坏煤特征并指出了宏观和显微破坏类型之间的关系。
Macroscopic and microscopic features of broken coal and its classification have been studied based on the data of underground coal walls,hand samples and polished sections obser.vation and measurement in Nantong Mining Area.Macroscopic breakage has been classirfied in-to seven types,microscopic ones into six types.Eight types of microtexture have been parti-tioned,broken coal features of all types have been described.Relation between macroscopic and microscopic broken coal types has been put out.It has important theoretical and practical signif-icanee for study of forming reason and mechanism of broken coal as well as prevention of coal and gas outbursts.
关键词
破坏
煤
分类
微观特征
煤突出
瓦斯突出
broken coal
coal and gas outburst
classification
feature
Nantong Mining Area
