GPS技术在天古崖隧道工程施工控制测量中的应用

The Application of GPS Technology in Construction Control Survey of Tianguya Tunnel Engineering

以岢瓦铁路天古崖隧道工程测量控制为例,详细介绍了GPS全球定位系统在长大隧道工程测量控制中的具体应用,指出采用GPS建立和布设隧道洞外复测测量控制网、GPS洞外加密控制测量网具有精密导线测量不可替代的优越性和可实施性,不受地形限制、精确度高,是今后长大隧道洞外施工控制测量技术发展的方向。

Taking the construction control survey of Tianguya Tunnel Engineering on Kelan-Watang Railway as an example,this paper introduces in detail the concrete application of GPS in the survey control of large tunnel engineering,and points out that the GPS outside tunnel retesting survey control network and GPS outside tunnel densified survey control network,which possess the superiority and actionability that can’t replaced by precise traversing,aren’t restricted by landform,have higher precise and are the future development direction of control survey technology in the outside construction of large tunnel.