摘要
根据高速铁路隧道控制性工程的特点,论述了高铁平面控制网布设原则、CGCS2000坐标系特点等,总结了高速铁路隧道施工过程中建立独立坐标系的3种方法,分析了高速铁路隧道平面控制网独立坐标系的建立及坐标转换等问题。结合某高速铁路隧道平面控制网施测的实例,通过对GPS数据的处理及精度分析,进一步阐述了在不同独立坐标系下CPI控制网坐标转换等问题,为提高高速铁路隧道平面控制网精度,进而减小贯通误差提供了参考。
According to the characteristics of the high-speed railway tunnel controlling engineering,this paper discusses the principle of high-speed plane control network is CGCS2000 coordinate system characteristics,summarizes the high-speed railway tunnel construction in the process of establishing independent coordinate system of the three methods,analyzes the high-speed railway tunnel plane control network problem such as the establishment of the independent coordinate system and the coordinate transformation.Combined with a high-speed railway tunnel plane control network,measured by the instance of GPS data processing and precision analysis,further elaborated under different independent coordinate system in the CPI control network problem such as coordinate transformation,to improve the precision of plane control network of high speed railway tunnel,and thus reduce the breakthrough error provides standard and reference.
作者
姜留涛
王燕
JIANG Liutao;WANG Yan(Shaanxi Railway Institute,Weinan 714000,China;Weinan Urban and Rural Planning Surveying and Mapping Service Center,Weinan 714000,China)
出处
《测绘与空间地理信息》
2019年第7期201-204,共4页
Geomatics & Spatial Information Technology
关键词
高速铁路隧道
平面控制网
高斯投影
坐标转换
high-speed railway tunnels
plane control network
Gauss projection
coordinate transformation
