浅谈GPS测量系统在长大隧道平面控制测量中的运用

摘要

基于GPS测量法建立的平面控制网具有相对定位精度高，观测速度快，功能齐全，操作简便，全天候、全球性作业、选点灵活、布网方便、对GPS网的几何图形也没有严格的要求，不受通视限制等优点，现已广泛应用于长大隧道的测量工程中。论文以湘渝高速公路武水段羊角隧道为例，介绍了采用GPS静态定位技术对羊角隧道洞外进行平面控制测量的方法和技术要求，阐述了GPS在长大隧道控制测量中的实际应用，得出了在长达隧道中运用GPS建立平面控制网较传统的方法更具有经济效益和社会效益的结论，以期对该行业工作者起到一定借鉴意义。%That based on the measuring method of GPS has the advantages of high precision, fast observation speed, complete functions, easy operation and all-weather and global observation. Meanwhile, it has the merits of choosing site flexibility; netting distributed conveniently without the limitation of visibility, so it having been wide applied to the survey project of super-long tunnel. Citing the tunnel of Wushui-yangjiao in Xingyu, this paper introduces application of plain control survey and the requirement of technology outside the Yangjiao tunnel by static technology of GPS, demonstrating the practical application of super-long tunnel with GPS. Lastly, from the conclusion the beneficial reference meaning to some workers in this walk can be obtained.