A review of methods, techniques and approaches on investigation of rock anisotropy

An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of...

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Bibliographic Details
Main Authors: Abbass, H. A., Mohamed, Z., Yasir, S. F.
Format: Conference Proceeding
Language:English
Subjects:
Anisotropy
Crack propagation
Dependence
Destructive testing
Literature reviews
Mathematical analysis
Matrix methods
Strength
Strength testing
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Summary:An extensive review on the anisotropy of rock samples has been carried out to characterize the velocity and strength behaviors under a variety of geometrical and mechanical conditions. Primarily, the causes and impacts of anisotropy is discussed to further understand the importance of the effect of such material from an engineering point of view. The strength anisotropy is investigated in laboratory using the standard strength testing practices (UCS, Triaxial, direct shear and etc..) to perceive the directional dependence of strength for anisotropic rocks and the velocity anisotropy using the ultrasonic scanning of the samples under destructive tests to evaluate the cracks propagation, density and orientation. Then, thorough literature review is done to highlight the significant observations that have been previously elicited. Furthermore, the mathematical determination methods of the degree of anisotropy are explored. Finally, this paper summarize that the strength and velocity anisotropy might be influenced by almost the same factors; however, the behavior of each anisotropy may not be the same considering the rock matrix and failure criteria.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5062638