三维激光扫描在地面沉降监测中的应用研究
Application of 3D laser scanning in land subsidence monitoring
冯健贤 1邱锦安 1洪庆仁 1魏任行2
作者信息
- 1. 广东省地质灾害应急抢险技术中心,广东 广州 510080
- 2. 广东省地质工程公司,广东 广州 510080
- 折叠
摘要
地面沉降伴随着路面塌陷、隆起等破坏现象,传统的监测手段存在工作量大、耗时长、监测面不广等缺点.三维激光扫描技术突破了传统全站仪、水准仪等单点定位的测量缺点,对表面进行高精度、高密度、高速度扫描获取其三维空间信息.使用三维激光扫描技术监测,配合全景相机与激光融合技术,生成彩色三维点云,通过预处理以及后期建模、对比分析,最终得到地面沉降监测成果.本文以某个典型地面沉降点为例,分析了三维激光扫描技术应用流程,对采集到的不同期次的点云数据进行处理和对比分析,精度上升为毫米级,与传统二等水准测量成果相符.三维激光扫描技术提高了地面沉降监测的工作效率和工作精度,为地面沉降监测提供有效的解决方案.
Abstract
Ground subsidence is accompanied by damage phenomena such as pavement collapse and bulge.Traditional monitoring methods have disadvantages such as heavy workload,lengthy duration,and limited monitoring area.3D laser scanning technology surpasses the limitations of traditional methods like total stations and levels,which only offer single-point positioning.It enables high-precision,high-density,and rapid surface scanning to capture three-dimensional spatial information.3D laser scanning technology,combined with panoramic camera and laser fusion techniques,was employed for monitoring to generate colored three-dimensional point clouds.Through pre-processing,modeling,and comparative analysis,the monitoring results of ground subsidence were finally obtained.Taking a typical ground subsidence point as an example,this paper analyzes the application process of 3D laser scanning technology and processes and compares point cloud data collected at different times.Achieving millimeter-level accuracy consistent with the traditional second-class leveling results.3D laser scanning technology improves the work efficiency and accuracy of land subsidence monitoring and provides an effective solution for land subsidence monitoring.
关键词
三维激光扫描/地面沉降/数据采集/监测流程Key words
3D laser scanning/land subsidence/data acquisition/monitoring process引用本文复制引用
基金项目
广东省地质灾害应急抢险技术能力提升研究项目(0809-2140GDC35071)
广东省重大突发地质灾害应急监测预警与处置技术研究项目(2022025)
广东省全省地质灾害风险普查(1∶25万)项目(0835-200Z22802231)
出版年
2024
NETL
NSTL
万方数据