地面三维激光扫描技术通过高速激光逐点扫描测量和摄影的方法,高分辨率地获取被测对象表面的三维坐标数据,真实再现所测物体的三维立体模型和景观。目前广泛应用于各类精密工程测量、三维建模、变形观测等领域。本文结合工程项目,介绍地下管线铺设工程三维建模中地面三维激光扫描技术的应用及流程,总结并分析目前该技术在地下管线测量中的问题和情况。 Ground 3D laser scanning technology through high-speed laser point-by-point scanning measurement and photography methods, high-resolution acquisition of the surface of the measured object’s three-dimensional coordinate data, the true reproduction of the measured object three-dimensional model and landscape. Currently widely used in various types of precision engineering surveying, three-dimensional modeling, deformation observation and other fields. Based on the project, this paper introduces the application and flow of surface 3D laser scanning technology in 3D modeling of underground pipeline laying project, summarizes and analyzes the problems and situations of the technology in underground pipeline measurement at present.