基于三维激光扫描技术的岩质边坡泥化夹层空间分布和几何形态

doi:10.13278/j.cnki.jjuese.20200014

吉林大学学报(地球科学版) ›› 2021, Vol. 51 ›› Issue (4): 1139-1151.doi: 10.13278/j.cnki.jjuese.20200014

基于三维激光扫描技术的岩质边坡泥化夹层空间分布和几何形态

刘文连^1,2, 张家明², 王志强¹, 徐则民²

1. 中国有色金属工业昆明勘察设计研究院有限公司, 昆明 650051;
2. 昆明理工大学建筑工程学院, 昆明 650500

收稿日期:2020-01-14 出版日期:2021-07-26 发布日期:2021-08-02
通讯作者: 张家明(1984-),男,讲师,博士,主要从事岩土体工程地质特性方面的研究,E-mail:zjm_engeo@163.com E-mail:zjm_engeo@163.com
作者简介:刘文连(1964-),男,教授级高级工程师,全国工程勘察设计大师,主要从事岩土体工程地质特性方面的研究,E-mail:lwenl702@sina.com
基金资助:
国家自然科学基金项目（41807258，41931294）；中国有色金属工业昆明勘察设计研究院有限公司科技创新项目（2019YN05）

Spatial Distribution and Geometrical Morphology of Muddy Interlayer in Rock Slopes Based on Three-Dimensional Laser Scanning Technique

Liu Wenlian^1,2, Zhang Jiaming², Wang Zhiqiang¹, Xu Zemin²

1. Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co., Ltd., Kunming 650051, China;
2. Faculty of Civil Engineering and Mechanics, Kunming University of Science and Technology, Kunming 650500, China

Received:2020-01-14 Online:2021-07-26 Published:2021-08-02
Supported by:
Supported by the National Natural Science Foundation of China (41807258,41931294) and the Science and Technology Innovation Project of Kunming Prospecting Design Institute of China Nonferrous Metals Industry Co.,Ltd. (2019YN05)

摘要/Abstract

摘要： 为了定量研究泥化夹层的空间分布和几何形态，以云南省玉溪市生活垃圾焚烧发电厂高边坡局部开挖剖面为对象，利用徕卡ScanStation C10三维激光扫描仪和瑞典ROMER RA-7520-2六轴关节臂三维测量仪进行扫描，得到了开挖剖面和泥化夹层的原始点云数据；然后采用Cyclone和Geomagic Wrap软件对点云数据进行一系列处理，分析了泥化夹层的三维空间分布、层面产状、间距、层面粗糙度和几何形态。结果表明：大部分泥化夹层横向分布于整个扫描剖面，少数呈局部分布；泥化夹层的平均倾向为196.41°±5.51°，平均倾角为22.27°±2.23°，间距在3.7~49.1 cm之间，平均值为（20.4±12.0）cm；不同层位及同一层位不同横向位置的泥化夹层厚度都不等，最厚约20 mm，最薄小于1 mm；泥化夹层顶面局部典型区域的平面拟合偏差在-22.4~32.5 mm之间，沿夹层倾向的粗糙度系数在5.67~16.77之间，平均值为10.11±3.25；泥化夹层的表面积与体积之比在5.14~5.86 cm^-1之间。运用三维激光扫描技术研究泥化夹层的空间分布和几何形态是可行的。玉溪市生活垃圾焚烧发电厂高边坡的泥化夹层具有宏观整体上相对平直、相互近似平行、非等距分布、间距小、层数多、厚度薄，细观上顶面粗糙底面相对光滑、三维形态复杂的特点。

关键词: 软弱夹层, 泥化夹层, 空间分布, 几何形态, 三维激光扫描仪

Abstract: The research on the spatial distribution of muddy interlayers is of great significance in engineering practice and science,however, the published works mainly focus on qualitative description. The objective of this work is to quantitatively investigate the spatial distribution and geometrical morphology of muddy interlayers. By taking the high slope excavation sections of Yunnan Yuxi municipal solid waste incineration power plant as an example, the point clouds of excavation sections and muddy interlayers were obtained by Leica ScanStation C10 3D laser scanner and ROMER RA-7520-2 arm 6-axis 3D measuring instrument, and the 3D spatial distribution, orientation, spacing, roughness, and geometrical morphology of muddy interlayers were analyzed after post-processing of the point cloud data using Cyclone and Geomagic Wrap software. The results show that most of the muddy interlayers are laterally distributed in the whole scanning section, and only a few are locally distributed. The mean inclination and mean dip angle of the muddy interlayers are 196.41°±5.51° and 22.27°±2.23°, respectively. The spacing varies from 3.7 to 49.1 cm with an average of (20.4±12.0) cm. The thickness of different lateral positions of muddy interlayers in different layers and the same layer is different, the thickest is about 20 mm, and the thinnest is less than 1 mm. For the typical area of the top surface of muddy interlayers, the plane fitting deviation is between -22.4 mm and 32.5 mm, and the roughness coefficient along the interlayer trend ranges from 5.67 to 16.77 with an average of 10.11±3.25. The ratio of surface area to volume of muddy interlayers is between 5.14 and 5.86 cm^-1. These findings suggest that it is feasible to study the spatial distribution and geometrical morphology of muddy interlayers in rock slopes by using the 3D laser scanning technique. In the high slope of Yuxi municipal solid waste incineration power plant, at the macroscopic level, the muddy interlayers are characterized by relatively straight, approximately parallel to each other, non-isometric distribution, small spacing, many layers, and thin thickness, while at the microscopic level, the muddy interlayers have rough top surface with relatively smooth bottom and complex three-dimensional geometrical morphology.

Key words: soft interlayer, muddy interlayer, spatial distribution, geometrical morphology, three-dimensional laser scanning

中图分类号:

P642

刘文连, 张家明, 王志强, 徐则民. 基于三维激光扫描技术的岩质边坡泥化夹层空间分布和几何形态[J]. 吉林大学学报(地球科学版), 2021, 51(4): 1139-1151.

Liu Wenlian, Zhang Jiaming, Wang Zhiqiang, Xu Zemin. Spatial Distribution and Geometrical Morphology of Muddy Interlayer in Rock Slopes Based on Three-Dimensional Laser Scanning Technique[J]. Journal of Jilin University(Earth Science Edition), 2021, 51(4): 1139-1151.

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基于三维激光扫描技术的岩质边坡泥化夹层空间分布和几何形态

Spatial Distribution and Geometrical Morphology of Muddy Interlayer in Rock Slopes Based on Three-Dimensional Laser Scanning Technique

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