运动学涡度及其测量方法被引量：16

The kinematic vorticity number and its measurement

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摘要运动学涡度是从流体力学引入到地质学当中的,主要应用于应变非共轴程度的确定。自然界中的剪切变形通常是纯剪切和简单剪切2个端元复合作用的结果,称为一般剪切,利用运动学涡度(WK)可以定量分析两者间的相对大小。文章介绍了涡度的具体测量方法,即张裂脉中纤维法、旋转残斑法、石英C轴组构与主应变比值的方法、石英C轴组构与斜列颗粒形态的方法等。 The kinematic vorticity number (W_K),which is introduced into geology from fluid dynamics,is used to measure the degree of non-coaxiality of strain. The shearing deformation in nature,which is called the general shear,can be decomposed into the pure shear component and the simple shear component. The relationship between the simple shear and the pure shear can be analyzed quantitatively by using W_K. The measurement methods ofW_K include the way of veins and fibers,the rotated porphyroblast approach,the method based on the relation between quartz C-axis fabrics and strain ratio,the method based on the relation between oblique grain shape and quartz C-axis fabrics,and the method of ultimate Mohr circle.

作者王勇生朱光

机构地区合肥工业大学资源与环境工程学院

出处《合肥工业大学学报（自然科学版）》 CAS CSCD 2004年第11期1480-1484,共5页 Journal of Hefei University of Technology：Natural Science

关键词运动学涡度一般剪切应变非共轴程度旋转残斑石英C轴组构 kinematic vorticity number general shear degree of non-coaxiality of strain rotated porphyroblast quartz C-axis

分类号 P551 [天文地球—构造地质学] TU452 [建筑科学—岩土工程]

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