Elastic anisotropy due to aligned cracks in porous rock
Elastic anisotropy due to aligned cracks in porous rock
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DOI：
10.3997/2214-4609.201410817
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发表时间：
1991-05
期刊：
影响因子：
--
通讯作者：
L. Thomsen
中科院分区：
文献类型：
--
作者：
L. Thomsen
岩石中裂纹对声速影响的理论是建立在Eshelby（1957）的经典论文基础上的。一组稀疏的排列椭圆形裂纹的影响（参见例如，哈德逊，1980）是公认的，尽管有限的浓度或裂纹形状分布是有问题的（Alfresen，1986 b）。尽管历史悠久，但基本上没有实验证实这一理论。困难在于制造含有受控数量、位置、方向、形状和尺寸的裂纹的样品。Rathore等人（1991）讨论的新技术似乎已经解决了这个问题，至少对于多孔岩石中的裂缝来说是这样。
The theory of the effects of cracks upon acoustic velocity in rock is founded upon the classic paper of Eshelby (1957). The effects of a dilute set of aligned ellipsoidal cracks (cf e.g., Hudson, 1980) are well established, although finite concentrations or crack-shape distributions are problematic (Thomsen, 1986b). Despite a long history, there has been essentially no experimental confirmation of this theory. The difficulty has been in fabricating samples containing cracks of controlled number, location, orientation, shape, and size. The new technique discussed by Rathore, et al. (1991) appears to have solved this problem, at least for cracks in porous rock.