摘要
为了确保国内目前最长盾构法施工隧道的顺利贯通,并结合超长盾构隧道导向测量的具体工程实践,根据经典平差理论研究了加测一个陀螺方位角的精度和加测位置对地下控制导线端点横向中误差的影响,推导了相应的平差计算公式,并同时导出了最佳加测位置的计算公式并进行了深入的分析,最后给出了一般情况下的加测位置的近似估计公式为:k=0.75n(k为加测位置的边数,n为导线总边数)。
To ensure penetrating the longest domestic shield construction tunnel,based on the practice of traverse survey of extralong shield construction tunnel of the underground railway in Shanghai.The theory that the underground control traverse with a peg-top azimuth surveyed specially during construction of the underground railway with the shield method is computed was studied,and the computation formula of the optimal position additional surveying was derived finally,the conclusion is the approximate formula of the optimal position additional surveying: k=0.75n (there k is the position additional surveying ,n is the total traverse sides.)
出处
《南京工业大学学报（自然科学版）》
CAS
2005年第3期47-50,共4页
Journal of Nanjing Tech University(Natural Science Edition)
