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Experimental investigation of the anisotropic mechanical behavior of phyllite under triaxial compression
Ist Teil von
International journal of rock mechanics and mining sciences (Oxford, England : 1997), 2018-04, Vol.104, p.100-112
Ort / Verlag
Berlin: Elsevier Ltd
Erscheinungsjahr
2018
Link zum Volltext
Quelle
Elsevier ScienceDirect Journals Complete
Beschreibungen/Notizen
The physical and mechanical properties (e.g., strength, permeability, and heat transfer) of anisotropic rocks are affected significantly by weak planes. Numerous engineering projects have dealt with anisotropic rocks, including underground excavation, the storage of radioactive materials, and oil and gas exploration. In recent years, the behavior of anisotropic rocks, including phylllte, schist, gneiss, slate, shale, sandstone, and synthetic rock, has been attracting increased interest, and their behavior has been studied using uniaxial and triaxial compression tests. The results of these past research projects clearly indicate that weak planes affect the macroscopic fracture patterns, the mesoscopic failure mechanisms, and the failure process of anisotropic rock. A comprehensive study of these phenomena will help gain a better understanding of the anisotropic features of rock. Thus, this paper describes our use of triaxial compression tests to investigate the anisotropy of phyllite with different water contents. In addition to fracture patterns and strength, the mesoscopic failure mechanisms were obtained through SEM fractographic studies and 3D laser profilometry on the fractured surface.