城市轨道交通工程地面控制网复测分析  

Analysis of Ground Control Network Retesting for Urban Rail Transit Projects

作　　者：李振昌 LI Zhenchang(China Railway Design Corporation,Tianjin 300142,China)

机构地区：[1]中国铁路设计集团有限公司,天津300142

出　　处：《城市勘测》2025年第1期97-102,共6页Urban Geotechnical Investigation & Surveying

摘　　要：地面控制网为城市轨道交通工程的建设提供空间位置基准,为了保证控制网的完整性和精准性,控制网复测需要贯穿于整个工程建设期间。本文结合深圳市某条城市轨道交通工程地面控制网第三次复测的案例,对卫星定位控制网、精密导线网及地面高程控制网复测进行论述。分别阐述了三个不同类型控制网的外业测量实施,以及所依据的测量技术要求;详细研究了数据处理流程,包括测量数据的质量检验和严密的平差计算;对复测成果进行分析,给出控制点成果更新的原则,确定控制点的稳定性和最终成果。本次城市轨道交通工程控制网复测的观测方法精确,数据处理严密,全部符合规范的要求,本工程案例可为类似项目的实施提供一定的借鉴意义。Ground control network provides spatial position reference for the construction of urban rail transportation project,in order to ensure the completeness and accuracy of the control network,the retesting of the control network needs to be carried out throughout the whole project construction period.This paper combines the case of the third re-testing of ground control network of an urban rail transit project in Shenzhen,and discusses the re-testing of satellite positioning control network,precision traversing network and ground elevation control network.The implementation of the field measurement of three different types of control networks and the measurement technical requirements based on them are elaborated respectively;the data processing process is studied in detail,including the quality inspection of measurement data and strict leveling calculation;the results of the remeasurement are analyzed,and the principle of updating the results of the control points is given to determine the stability of the control points and the final results.The observation method of this urban rail transit project control network remeasurement is precise,the data processing is strict,and all of them meet the requirements of the specification,and this project case can provide certain reference significance for the implementation of similar projects.

关 键 词：城市轨道交通 卫星定位控制网 精密导线网 地面高程控制网 复测 分析 

分 类 号：P258[天文地球—测绘科学与技术]