三维激光扫描在地下溶洞的应用

Application of 3D Laser Scanning in Underground Caves

地下溶洞内部可见程度低、空间形态结构多种多样、环境复杂,对于地下溶洞的精确测量一直是一个难题。三维激光扫描技术可以非接触式的精确获取物体表面的三维点云数据,经过处理后能建立起物体的三维空间数据模型。本文以某喀斯特地貌地下溶洞项目为例,阐述了三维激光扫描技术在地下溶洞测量中测量原理、数据处理方法、工作流程,建立了洞穴主线的总览图、三维侧面、剖面图,对其中的钟乳石进行了三维建模,完全复现了溶洞内的空间模型。最后总结了三维激光扫描技术在地下溶洞测量中的优势和应用范围,希望给同类的工程项目一定借鉴作用。

Accurate measurement of underground caverns has always been a difficult problem due to their low visibility,diverse spatial structures and complex environments.Three-dimensional laser scanning technology can accurately obtain the three-dimensional point cloud data on the surface of the object in a non-contact way,and after processing,it can establish the three-dimensional spatial data model of the object.This paper takes a karst landscape underground cave project as an example,describes the 3D laser scanning technology in the underground cave measurement measurement principle,data processing methods,workflow,establishes the overview map of the main line of the cave,three-dimensional side,profile,three-dimensional modeling of the stalactites,which completely reproduces the spatial model of the cave.Finally,the advantages and application scope of 3D laser scanning technology in underground cave measurement are summarized,and it is hoped that it will give a certain reference to similar engineering projects.