机载激光雷达技术在G4京港澳高速改扩建中的应用  

Application of Airborne LiDAR Technology in the Reconstruction and Expansion of G4 Beijing-Hong Kong-Macao Expressway

作　　者：张子昕 ZHANG Zixin(Hunan Communications Research Institute,Changsha 410114,China)

机构地区：[1]湖南省交通科学研究院有限公司,湖南长沙410114

出　　处：《城市勘测》2025年第2期183-186,共4页Urban Geotechnical Investigation & Surveying

摘　　要：随着交通流量逐年增长,G4京港澳高速(湖南段)现有双向四车道无法满足交通需求,改扩建需求迫在眉睫。改扩建项目不同于新建项目,需对老路桥隧等重要地物进行拼宽利用,所以对测量精度要求特别高;同时改扩建项目一般交通大动脉,勘测期间还不能影响交通通行。为解决以上问题,本文提出了机载激光雷达测量技术方法,给出了方法实施的作业流程,并对实施效果进行了分析,最终实现公路路面中误差优于2 cm之内。在交通设施运维管理方面,有助于实现精准病害监测和智能养护决策,提升运维效率和质量;在测绘技术领域,引领推动了跨界融合,为行业发展提供了新的思路和方法。With the annual growth of traffic flow,the existing two-way four-lane G4 Beijing-Hong Kong-Macao Expressway(Hunan section)can no longer meet the traffic demand,making the reconstruction and expansion an urgent need.Different from new construction projects,the reconstruction and expansion project requires widening and utilization of important features such as old roadbed,bridges,and tunnels,so the requirement for measurement accuracy is particularly high.At the same time,as the reconstruction and expansion project is generally a major traffic artery,traffic flow should not be affected during the survey.To address the above issues,this paper proposes the measurement technology of airborne LiDAR,presents the operation process of implementing this method,and analyzes the implementation effect.Ultimately,the mean square error of the road surface is achieved to be better than 2 cm.In terms of the operation and maintenance management of transportation facilities,it helps to achieve accurate disease monitoring and intelligent maintenance decision-making,improving the efficiency and quality of operation and maintenance.In the field of surveying and mapping technology,it leads and promotes cross-border integration,providing new ideas and methods for the development of the industry.

关 键 词：G4京港澳高速改扩建 机载激光雷达 数据采集 数据处理 实施效果分析 

分 类 号：P225.2[天文地球—大地测量学与测量工程]