测绘通报 ›› 2020, Vol. 0 ›› Issue (8): 157-159.doi: 10.13474/j.cnki.11-2246.2020.0270

• 测绘地理信息技术应用案例 • 上一篇    下一篇

基于点云的地铁隧道断面精确拟合与形变分析

李志远1, 王健1, 于德亮2, 孙文潇1   

  1. 1. 山东科技大学, 山东 青岛 266590;
    2. 兖州煤业股份有限公司兴隆庄煤矿, 山东 济宁 272102
  • 收稿日期:2020-06-15 出版日期:2020-08-25 发布日期:2020-09-01
  • 通讯作者: 王健。E-mail:wangj@sdust.edu.cn E-mail:wangj@sdust.edu.cn
  • 作者简介:李志远(1995-),男,硕士生,研究方向为三维激光扫描数据处理。E-mail:2498689969@qq.com
  • 基金资助:
    山东省重大科技创新工程项目(2019JZZY020103)

Accurate fitting and deformation analysis of metro tunnel section based on point cloud

LI Zhiyuan1, WANG Jian1, YU Deliang2, SUN Wenxiao1   

  1. 1. Shandong University of Science and Technology, Qingdao 266590, China;
    2. Yanzhou Coal Industry Co., Ltd., Xinglongzhuang Coal Mine, Jining 272102, China
  • Received:2020-06-15 Online:2020-08-25 Published:2020-09-01

摘要: 针对三维激光扫描技术应用于地铁圆形、马蹄形等不同形状的隧道断面难以精确拟合和形变分析问题,提出了一种基于三次B样条曲线的隧道断面拟合分析方法,首先利用三次B样条曲线对断面进行拟合;然后根据拟合曲线提取断面特定点,实现断面形变分析。对某段地铁隧道点云数据进行断面分析表明,该方法可以快速准确地分析隧道断面的形变信息。

关键词: 点云, 三次B样条曲线, 断面拟合, 特征点提取, 形变分析

Abstract: Aiming at the problem that 3D laser scanning technology is difficult to accurately fit and analyze the deformation of tunnel sections with different shapes, such as circular and horseshoe-shaped subways, a method of tunnel section fitting analysis based on cubic b-spline curve is proposed.Firstly, cubic b-spline curve is used to fit the section. Then, the feature points of the cross section are extracted according to the fitted curve to realize the deformation analysis of the cross section. The cross-section analysis of the point cloud data of a subway tunnel shows that this method can analyze deformation information of tunnel section quickly and accurately.

Key words: point cloud, cubic B-spline curve fitting, section fitting, feature point extraction, deformation analysis

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