SURVEYING DISTRIBUTION OF GPS CONTROL NETWORK FOR EXTRA LONG TUNNEL AND ITS ACCURACY
Xiang Zhang · 2001
Taking the Qinling Tunnel engineering project as example and the survey and design as presupposition, the paper expounds the surveying distribution method by using the GPS control network for the extra long tunnel, including the design of working scheme, outdoor reconnaissance and the resloving calculation and evaluation of traverse′s vectors, the lateral error of control network and its accuracy and reliability,etc. At the same time, the relative existing problems in surveying distribution and the matters for which attention should be paied are also introduced briefly in this paper.