摘要
为解决传统勘测方法效率较低等问题,从数字高程模型制作、横纵断面生产、大比例数字地形图测绘、通防扫描和既有线测量等方面分析激光雷达技术在高铁勘测中的应用优势,并以长赣高铁项目为例进行应用实验,得出以下结论。(1)激光点云数据的平面和高程中误差均小于0.1 m,能满足实际项目应用需求;(2)采用激光点云数据测量中线,相较于外业人工实测,效率平均提升1倍以上;(3)点云测量中线效率受地形影响较小,外业实测中线效率受地形影响较大,地势越陡峭、地形越复杂,基于激光点云数据内业采集中线的优势越明显。
In order to study the application of lidar technology in railway surveying,this article analyzes the advantages of lidar technology in railway surveying from the aspects of making digital elevation models,producing transverse and vertical sections,surveying and mapping large-scale digital topographic maps,scanning,and existing railway surveying.And takes the application experiment of the Changsha-Ganzhou High-speed Railway project as an example,the following conclusions are drawn:(1)The plane and elevation errors of the laser point cloud data are both less than 0.1 m,which can meet the actual project application requirements.In addition,the strong penetration ability of point cloud vegetation indicates that the laser point cloud data is reliable;(2)Center line survey based on the laser point cloud data which is less affected by terrain,compared with manual measurement,the efficiency is greatly improved.The steeper the terrain and the more complex the terrain,the more obvious the advantage of the center line survey based on laser point cloud data.The research results of this paper have guiding significance for the popularization and application of lidar technology in railway survey.
作者
赵胜强
Zhao Shengqiang(China Railway SiYuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)
出处
《铁道勘察》
2022年第6期38-42,共5页
Railway Investigation and Surveying
关键词
高速铁路
激光雷达
点云数据
测绘方法
数字模型
high-speed railway
Lidar
point cloud data
surveying and mapping method
digital cartography
