煤中剪切指向标志的类型讨论

The types of shear sense indicators in coals

摘要: 通过与岩石中的剪切指向标志对比,初步研究了煤中的剪切指向标志。发现了如羽状脉体等特殊的指向标志。煤中剪切指向标志研究,是岩层构造运动学分析的主要内容,可判别局部剪应力方向,进而为确定应力场提供依据。

Abstract: Based on comparing with the shear sense indicators in rocks systematically summarized, the indicators in coal have been preliminarily researched. It is found that there are some special kinds of shear sense indicators such as pinnate veins. The investigation of shear sense indicators in coals can provide a basis for determination of local shear stress orientation, hence for determination of the whole stress field.