长江口崇明岛域跨江高程测量基准网构建与完善  

Construction and improvement of elevation measurement datum network for cross-river leveling survey in Chongming Island area of Yangtze River estuary

作　　者：雷婉南 赵鹏飞[2,3] LEI Wannan;ZHAO Pengfei(Shanghai Construction Management Vocational College,Shanghai 200232,China;Shanghai Surveying and Mapping Institute,Shanghai 200063,China;Key Laboratory of Spatial-Temporal Big Data Analysis and Application of Natural Resources in Megacities,Ministry of Natural Resources,Shanghai 200063,China)

机构地区：[1]上海建设管理职业技术学院,上海200232 [2]上海市测绘院,上海200063 [3]自然资源部超大城市自然资源时空大数据分析应用重点实验室,上海200063

出　　处：《上海国土资源》2023年第4期32-36,89,共6页Shanghai Land & Resources

基　　金：上海市科委“科技创新行动计划”社会发展科技攻关项目(21DZ1204100)。

摘　　要：从20世纪50年代开始,测绘工作者就一直尝试在崇明岛域建立精准的、并与上海陆域统一的高程基准。在回顾崇明岛高程基准建设及统一历史的基础上,以2021年上海市高程控制网复测项目为例,详细阐述了上海陆域到崇明岛的高程连测工作原则、实施路径与关键技术。在项目实施中,充分借助有利现场条件,实现了双线跨江高程连测,其中东线穿越LNG越江管道A线,西线跨越长江口北港,最终实现了上海陆域和崇明岛高程基准的完全统一。文章还就今后的施测及类似工程提出建议与展望。Since the 1950s,surveyors have been trying to establish a precise elevation datum in Chongming Island which is unified with Shanghai land.Firstly,the elevation datum construction and unified history of Chongming Island was reviewed.Taking the repetition of Shanghai elevation control network in 2021 as an example,the elevation connect leveling from Shanghai land to Chongming Island was elaborated in detail.In the implementation of the project,two cross river leveling lines were realized by making full use of field conditions.The eastern line crossed the A line of LNG cross-river pipeline,and the western line crossed the North Channel of Yangtze Estuary.The key technologies and specific implementation of the two leveling lines were analyzed and discussed in detail.Through the repetition of Shanghai elevation control network in 2021,the unification of the elevation datum of Shanghai land and Chongming Island was realized.Finally,suggestions and prospects for future survey and similar projects were put forward.

关 键 词：水准测量 测量基准 高程连测 跨江测量 基准网 

分 类 号：P224.1[天文地球—大地测量学与测量工程]