Method for visualizing the shear process of rock joints using 3D laser scanning and 3D printing techniques
Method for visualizing the shear process of rock joints using 3D laser scanning and 3D printing techniques
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DOI：
10.1016/j.jrmge.2022.02.013
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发表时间：
2022-04
影响因子：
7.3
通讯作者：
Man Huang;Chenjie Hong;Peng Sha;S. Du;Zhan-you Luo;Z. Tao
中科院分区：
文献类型：
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作者：
Man Huang;Chenjie Hong;Peng Sha;S. Du;Zhan-you Luo;Z. Tao
这项研究提出了一种可视化的方法来跟踪关节表面形态。采用三维激光扫描（3DLS）和3D打印（3DP）技术记录岩石节理剪切过程中的渐进破坏。3DP树脂用于创建透明标本，以精确再现自然关节的表面形态。为了更准确地再现硬岩的力学性能，采用了冻结法来增强3DP试样的力学性能。利用一个包含电荷耦合器件（CCD）摄像机的视频摄像机记录直剪试验过程中接头表面损伤区域的演变。最佳拍摄距离和拍摄角度建议分别为800 mm和40°。通过对CCD摄像机拍摄的图像进行校正，定量描述了接头表面的损伤区域。验证表明，该方法能准确描述不同剪切阶段的总剪切面积。这些发现有助于阐明岩石节理的剪切特性。
This study presents a visualized approach for tracking joint surface morphology. Three-dimensional laser scanning (3DLS) and 3D printing (3DP) techniques are adopted to record progressive failure during rock joint shearing. The 3DP resin is used to create transparent specimens to reproduce the surface morphology of a natural joint precisely. The freezing method is employed to enhance the mechanical properties of the 3DP specimens to reproduce the properties of hard rock more accurately. A video camera containing a charge-coupled device (CCD) camera is utilized to record the evolution of damaged area of joint surface during the direct shear test. The optimal shooting distance and shooting angle are recommended to be 800 mm and 40°, respectively. The images captured by the CCD camera are corrected to quantitatively describe the damaged area on the joint surface. Verification indicates that this method can accurately describe the total sheared areas at different shear stages. These findings may contribute to elucidating the shear behavior of rock joints.