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A state-of-the-art review of mechanical characteristics and cracking processes of pre-cracked rocks under quasi-static compression

引用

Journal of Rock Mechanics and Geotechnical Engineering 2022年第6期14卷 2034-2057页

作者： Liwang Liu Haibo Li Xiaofeng Li State Key Laboratory of Geomechanics and Geotechnical Engineering Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhan430071China University of Chinese Academy of Sciences Beijing100049China

The mechanical characteristics and failure behavior of rocks containing flaws or discontinuities have received wide attention in the field of rock *** external loads are applied to rock materials,stress-induced cracks would initiate and propagate from the flaws,ultimately leading to the irreversible failure of *** investigate the cracking behavior and the effect of flaw geometries on the mechanical properties of rock materials,a series of samples containing one,two and multiple flaws have been widely investigated in the *** this paper,the experimental results for pre-cracked rocks under quasistatic compression were systematically *** progressive failure process of intact rocks is briefly described to reveal the background for experiments on samples with ***,the nondestructive measurement techniques utilized in experiments,such as acoustic emission(AE),X-ray computed tomography(CT),and digital image correlation(DIC),are *** mechanical characteristics of rocks with different flaw geometries and under different loading conditions,including the geometry of pre-existing flaws,flaw filling condition and confining pressure,are ***,the cracking process is evaluated from the perspective of crack initiation,coalescence,and failure patterns.

关键词： Pre-cracked rock crack initiation pattern crack coalescence pattern Failure pattern

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