运营普速铁路测量快速建网技术及应用  

Technology and Application of Rapid Networking Construction for Operation Common Speed Railway Measurement

作　　者：杨立光 YANG Liguang(Beijing Tieke Special Engineering Technology Co.Ltd.,Beijing 100081,China;Railway Engineering Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China)

机构地区：[1]北京铁科特种工程技术有限公司,北京100081 [2]中国铁道科学研究院集团有限公司铁道建筑研究所,北京100081

出　　处：《铁道建筑》2022年第11期53-57,共5页Railway Engineering

基　　金：中国国家铁路集团有限公司科技研究开发计划(N2021G048);中国铁道科学研究院集团有限公司基金(2020YJ110)。

摘　　要：结合襄渝铁路控制网建设项目,提出了运营普速铁路控制网测量体系,从北斗基准站网与固定桩控制网两方面评价控制网的平面和高程测量精度。结果显示:采用GNSS测量北斗基准站网和固定桩控制网平面精度可满足规范要求;采用卫星测高+似大地水准面模型改正技术测量北斗基准站网高程精度可以满足三等水准测量精度要求;固定桩控制网高程采用传统水准测量方法精度指标可以满足四等精度要求。采用该测量体系可极大减少外业线下水准测量工作量,减少站区固定桩控制网测量时遮挡等问题,为线路养护维修提供稳定可靠基准。Combined with the construction project of Xiangfan-Chongqing railway control network,the measurement system of control network for operating common speed railway was proposed,and the plane and elevation measurement accuracy of control network was evaluated from two aspects of BDS reference station network and fixed pile control network.The results show that the plane accuracy of BDS reference station network and fixed pile control network measured by GNSS can meet the specification requirements.The elevation accuracy of BDS reference station network measured by satellite altimetry+quasi geoid model correction technology can meet the measurement accuracy requirements of third order leveling.The accuracy index of the fixed pile control network elevation using the traditional leveling method can meet the fourth order leveling accuracy requirements.The use of this measurement system can greatly reduce the workload of field offline leveling measurement,reduce the problems such as shielding during the measurement of the fixed pile control network in the station area,and provide a stable and reliable reference for track maintenance.

关 键 词：普速铁路 快速建网 现场试验 北斗基准站 固定桩控制网 似大地水准面模型 约束平差 

分 类 号：P224.1[天文地球—大地测量学与测量工程] P228[天文地球—测绘科学与技术]