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Shear behavior of two-order morphology in rock joints

Journal of Mountain Science 2023年第3期20卷 845-858页

作者： HUANG Man CHEN Xuan-nan HONG Chen-jie LIU Dan LUO Zhan-you DU Shi-gui WU Zao-sheng Dept.of Civil Engineering Shaoxing UniversityShaoxing 312000China State Key Laboratory for GeoMechanics and Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Civil and Environmental Engineering Ningbo UniversityNingbo 315000China Geological Survey Engineering Department Shaoxing Huahui Engineering Design Group Co.LTDShaoxing 312000China

Two-order morphology of rock joints named as waviness and unevenness can be separated by morphology classification method,which plays a decisive role in the evolution of shear stress during the shear *** joint morphology is obtained by using 3D printing and 3D laser scanning techniques and the joint model samples in two-order morphology are produced by cement ***,shear tests are performed under different normal *** shows that the waviness is dominant in the total morphology during the shear test,and the shear contribution of unevenness mainly occurs in the climbing phase of shearing *** the failure modes of two-order morphology,waviness mainly embodies shear dilation characteristics and unevenness mainly shows shear wear *** on this,a quantitative parameter is proposed to represent the ratio of the peak shear strength of the two-order morphology to that of total *** functional relationship between the peak shear strength of total and two-order morphologies is determined,providing a theoretical method for further in-depth study on the shear strength of the interaction with two-order morphology of rock joints.

关键词： Rock joints Two-order morphology Shearcharacteristics S hear strength Damage mechanism

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