城市地铁地面控制测量的若干问题探讨

Discussion on some Problems of Ground Control Survey of Urban Subway

以城市地铁建设地面控制网为研究对象,结合某市地铁工程,就实施过程中坐标系统的选择、不同时期数据处理时坐标转换、不同时期各线路之间的公共控制点间的连接、对控制网的监理检查等问题,进行了技术要点分析、工作要点论述和探讨。并对地铁地面控制测量精度提升进行了理论升华,对从事相关工作的同行有重要的参考价值。

Taking the ground control network of urban subway construction as the research object,combined with a subway project in a city,this paper analyzes the technical points,discusses the work points,and puts forward some meaningful suggestions for the actual work on the selection of coordinate system in the implementation process,the coordinate transformation during data processing in different periods,the connection between public control points between lines in different periods.It also sublimates the theory of improving the accuracy of subway ground control measurement,which has important reference value and significance for colleagues engaged in related work.