Technical path of model reconstruction and shear wear analysis for natural joint based on 3D scanning technology
Technical path of model reconstruction and shear wear analysis for natural joint based on 3D scanning technology
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DOI：
10.1016/j.measurement.2021.110584
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发表时间：
2021-12-21
期刊：
影响因子：
5.6
通讯作者：
Zhang, Dan
中科院分区：
文献类型：
--
作者：
Song, Leibo;Jiang, Quan;Zhang, Dan
节理是影响岩体稳定性的关键因素，但其复杂的形态给节理的研究带来了挑战。三维（3D）扫描技术可以获得无接触物体的点云数字模型。本课题旨在将该技术引入到关节特性分析中。为此，首先通过构造平移矩阵M和旋转矩阵r求解关节三维扫描数据的云平面倾角，然后通过参数分析确定三维扫描技术分析关节形态的合适采样间隔。接下来，结合3D扫描、3D打印和3D雕刻技术，提出了两种具有相同自然形态和岩性的关节模型制作方法，克服了实验中关节样品不足的问题。最后，基于三维扫描数字模型，提出了潜在剪切区域的识别方法和剪切破坏特征的测量技术。本研究为分析节理形态和剪切机理提供了一种新的途径，也有利于三维扫描技术在岩土工程中的推广。
Joint is a crucial factor affecting rock mass stability, but its complex morphology brings challenges to its research. The three-dimensional (3D) scanning technology can obtain the point cloud digital model of the object without contact. The research is to introduce this technology into the analysis of joint characteristics. For this purpose, firstly, cloud plane inclination of joint 3D scanning data is solved by constructing translation matrix M and rotation matrix R. Then, the appropriate sampling interval for 3D scanning technology to analyze the joint morphology is determined by parametric analysis. Next, by integrating 3D scanning, 3D printing, and 3D carving technologies, the two fabrication methods of joint models with the same natural morphology and lithology are proposed, which overcomes the problem of insufficient joint samples in the experiment. Finally, based on the 3D scanning digital model, the recognition method of the potential shear region and the measurement technique of shear failure characteristics are presented. This research provides a new way to analyze the joint morphology and shear mechanism, and is also conducive to the popularization of 3D scanning technology in geotechnical engineering.