摘要
该文针对黔中水利枢纽输水线路长、平面控制网精度要求高的特点,为了有效控制测量误差的积累[1,2],采用了目前较为先进的双频GPS接收机进行外业观测,在内业处理过程中合理解决施工控制网与勘测设计阶段测图控制网的衔接问题,恰当处理大规模施工控制网数据处理中遇到的难题。由于该控制网精度要求较高,施测难度大,因此,通过事前控制网的技术设计和观测过程中的质量控制以及数据处理,解决了该控制网网型大、精度高、施测难度大的问题,为贵州山区类似工程控制网的建立提供了范例。
According to the characteristics that the water conveyance lines are very long and the horizontal control network requires very high accuracy in Qianzhong water conservancy project, in order to control the error accumulation effectively, the advanced dual-frequency GPS receivers is adopted to field observation in the paper, and the relationship between construction control network and mapping control network has been solved reasonably during indoor processing, and the difficult problems had been solved properly in data processing of large construction control network . Due to high accuracy of control network and large difficulty of measure- ment, the problems are solved by the methods of control network design ahead and quality control between field observation and data processing, which provided a demonstration for similar engineering control network of mountainous area in Guizhou province.
出处
《勘察科学技术》
2012年第2期49-53,共5页
Site Investigation Science and Technology
关键词
黔中水利枢纽工程
控制网
GPS
Qianzhong water conservancy project
control network
GPS
