摘要
简要介绍了港珠澳大桥首级控制网的建网与复测情况及取得的主要技术成果,阐述了港珠澳大桥GSNS连续运行参考站系统的建设特点、难点、关键技术及系统应用与维护中需要解决的主要问题,分析了工程坐标系投影长度变形对主体工程施工的残余影响,提出了按精度等级由低至高、分阶段实施的海中高程基准传递的总体技术路线。
The main technical results of building and main taining of the first-order survey control network of the Hong Kong-Zhuhai-Macao Bridge are briefly described.The charac teristics,difficulties,key techniques of the GNSS continuously operating reference stations and the main technical problems need to be solved in applications and maintaining of the engineering CORS system are explained.The projection length dis tortion of the Engineering Coordinates System in the engineering construction is analyzed.Finally,the overall technical route of the leveling datum transmitting oversea construction,and of carrying out according surveying precision by stages,is put forward.
出处
《测绘地理信息》
2013年第1期49-51,共3页
Journal of Geomatics
关键词
特大型跨海桥隧工程
首级控制网
工程CORS
跨海高程传递
extra large-scale cross-sea bridge and tunnel en gineering
the first order control network
engineering CORS
crossing sea levelling
