隧道地表平面控制网测量误差对横向贯通精度影响值的计算和网的最优化设计

CALCULATION OF THE LATERAL BREAK-THROUGH ERROR OF TUNNEL CAUSED BY SURVEYING ERRORS OF THE HORIZONTAL CONTROL NETWORK AND THE OPTIMIZATION OF THIS NETWORK

为了保证隧道按技术标准贯通建成,根据间接平差,考虑铁路隧道测量的特点,不列权函数式,推导了计算地表平面控制网测量误差对隧道横向贯通精度影响值的严密公式。并通过对控制网优化设计的讨论,引出了有益的结论。

In this paper we ptesent the method and formulas for rigorously calculating the lateral break-through error of tunnel caused by surveying errors of the horizontal control network. The method has a universal applicability for different conditions. In the end of the paper we discuss the optimization of the tunnel control network and draw some beneficial conclusions.