基于车载激光雷达的铁路既有线复测技术研究

摘要

Research purposes: With the increase of railway operation mileage and speed, the workload about retest of existing lines is growing.There is a great security risk, multi-step process and low measurement efficiency in the traditional way to retest the existing lines.Thus the research on an efficient, safe and practical work method is needed.Research conclusions:(1)Vehicle laser radar measurement technique can obtain the spatial geometric information of the terrain around the railway rapidly and in real time with almost zero interference on operations.(2)With a few points to refine the original laser point cloud, you can obtain massive data which meets the accuracy requirements on the retest of railway.(3)Digital imaging results truly record the conditions of railway and corporate equipment on the spot, making the investigation results more intuitive and reliable.(4)The research results can be applied to retesting of existing lines, adding new lines, maintenance of equipment, landscape visualization and so on, creating conditions for information management of railway operation systems.%研究目的:随着铁路运营里程的增加和行车速度的提升,既有线复测的工作量也日益增多.传统的既有线复测方法存在较大的安全隐患,且工序多,作业效率较低,故急需探索一种高效、安全、实用的作业手段.研究结论:(1)车载激光雷达测量技术可以快速、实时地获取铁路周围地形的空间几何信息,对铁路运营管理几乎零干扰;(2)通过少量地面控制点对原始激光点云数据进行精化处理,可获得满足铁路复测精度要求的海量数据;(3)获取的数码影像成果真实记录了铁路周围的现场状况以及公务设备情况,使得各项调查成果更加直观可靠;(4)本研究成果可应用于既有铁路复测、增设复线、设备维护、景观可视化等方面,可为铁路运营系统信息化管理创造条件.