地面三维激光扫描在公路大比例尺数字测图及断面测量中的应用

Application of terrestrial laser scanner in large scale digital mapping and section survey of highways

针对山区高速公路高精度测量工作困难、安全隐患大、作业效率低等问题,本文将地面三维激光扫描技术应用到公路局部工点1∶500比例尺地形图测绘、断面测量,详细介绍了地面三维激光扫描在公路初测、定测阶段的工作流程、数据处理方法,并对成果精度进行分析。通过实际工程应用表明,采用地面三维激光扫描技术可以满足公路初测及定测阶段的地形测绘要求,有效减少外业测量工作量、缩短工期,是公路勘测技术手段的补充。

Aiming at the difficulty of high-precision,high security risks and low efficiency in mountainous expressway surveying,the terrestrial 3 D laser scanning technology is applied to 1∶500 scale topographic mapping and cross-section measurement of highway.The working process and data processing method are introduced in detail,and the accuracy of the results is analyzed.The practical engineering application shows that the terrestrial 3 D laser scanning technology can meet the requirements of topographic surveying and mapping in the initial and determination survey of highway,effectively reduce the workload of field survey and shorten the project time period,which is a supplement to highway survey technology.