摘要
分析、归纳了大量的扫描电子显微镜观测结果 ,以煤岩学、构造地质学研究为基础 ,依据煤中显微裂隙的形态、大小、排列组合等发育特征 ,将内生裂隙进一步划分为失水裂隙、缩聚裂隙、静压裂隙 ,将外生裂隙进一步划分为张性裂隙、压性裂隙、剪性裂隙、松弛裂隙。描述了各类裂隙的发育特征 ,探讨了裂隙的演化、识别和影响裂隙发育的因素。裂隙成因类型的研究 ,有助于判断不同裂隙对煤储层渗透率的贡献。
In accordance with coal sample observation by scanning electron microscope (SEM) and researches based on such subjects as anthracology, tectonic geology and material mechanics, the endokinetic fractures in coal are further classified into dewatering fractures, condense fractures and static pressure fractures, while the exogenetic fractures are further divided into tensile fractures, pressure fractures, shrink fractures and slack fractures, consistent with the development regularity of the geometric shapes, sizes and arrangement of fractures. The evolution, identification and controlling factors of the microfractures in coal are discussed, and the role of various fractures in coal reservoir is also analyzed. The researches on coal microfractures are of great significance in the study of coal reservoir, the exploration and development of coalbed methane, and the drainage of coal gas from coal mines.
出处
《岩石矿物学杂志》
CAS
CSCD
北大核心
2002年第3期278-284,共7页
Acta Petrologica et Mineralogica
