Kaiser effect of cracked sandstone under different loading rotating angles

被引：8
|
作者：
Kunpeng L. [1 ,2 ]
Wuzhou Z. [3 ]
Xiaotong X. [1 ,2 ]
Yu Z. [1 ,2 ]
Daoyong W. [1 ,2 ]
Xingyuan J. [1 ,2 ]
机构：
[1] College of Resource and Environmental Engineering, Guizhou University, Guiyang, 550025, Guizhou
[2] Key Laboratory of Karst Geological Resources and Environment Ministry of Education, Guizhou
[3] Guizhou Zhiheng Engineering Survey Design & Consulting Co., LTD, Guizhou
来源：
Arabian Journal of Geosciences | 2021年 / 14卷 / 18期
关键词：
Acoustic emission; Crack; Kaiser effect; Rotating angle;
D O I：
10.1007/s12517-021-08283-w
中图分类号：
学科分类号：
摘要：
The memorability of the loaded rock is the basis of the directionality of the rock acoustic emission (AE). The influence of cracks in the rock on the directionality of the rock AE Kaiser effect is still inconclusive. In this study, the Brazilian test was performed at different angles using the complete and pre-cracked sandstone disc specimens to verify the memorability of the rock to load and directionality of the rock AE Kaiser effect. We obtained the following results: (1) The angle between the second and original load directions affects the memorability of the rock. As the angle increases, the memorability of the load gradually disappears. In other words, the Kaiser effect of the rock gradually disappears as the angle increases; (2) the Kaiser effect directionality of cracked sandstone is clearer than that of complete sandstone, as the Kaiser effect of cracked sandstone disappears faster in the rotation process. © 2021, Saudi Society for Geosciences.
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