青岛国家水准原点网建设与维护  

Construction and Maintenance of the National Leveling Origin Network in Qingdao

作　　者：欧阳桂崇 杨华忠 魏彩虹 

机构地区：[1]测绘信息技术总站,陕西西安710054

出　　处：《测绘科学与工程》2013年第6期25-28,共4页Geomatics Science and Engineering

摘　　要：现阶段我国使用的1985国家高程基准，其高程起算面采用黄海平均海水面，由青岛国家水准原点网标定。本文介绍了青岛国家水准原点网的选址、建设及检测过程，归纳了历次检测所发现的点位破坏情况，通过分析原点网内各点的高程变化，得出了青岛国家水准原点网点位稳定、原点等主点保存良好、验潮站水准点逐年下沉的结论。At present, the National Vertical Datum 1985 which sets the mean sea level of the Yellow Sea as the height da-tum is adopted in China, and it is calibrated by the National Leveling Origin Network in Qingdao. In this paper, the process of site selection, construction and test of the network is introduced, and the destroyed point positions detected in all previous tests are summarized. After analyzing the height change of each point in the origin network, it is concluded that the point positions of the National leveling origin network are stable, the origin and other main points are kept well, and the bench mark of tidal station descends from year to year.

关 键 词：水准原点 水准测量 平均海水面 高程基准 

分 类 号：P228[天文地球—大地测量学与测量工程]