隧道连续超短边导线测量方法比较与应用

Comparison and Application of Tunnel Continuous Ultra-Short Edge Traverse Measurement Methods

为解决隧道洞内连续超短边导线测量难题及选择最优测量方案,结合青岛地铁跨海隧道斜井洞内导线测量出现的连续8条短边的工作实践,将常规双导线、虚拟双导线、多公共转点侧方交会导线、自由设站多公共点边角交会导线、常规双导线+陀螺组合定向测量方法在工程上进行综合应用;对各种方法的应用条件、测量效率、达到的效果等进行对比分析,将最优的测量成果用于指导跨海隧道施工,最终保证了隧道高精度贯通。通过总结几种测量方法的优缺点及应用条件,为隧道洞内短边导线测量提供多种方位传递方法,以摆脱对陀螺仪的依赖。

To realize continuous ultra-short edge traverse measurement in tunnel and select an appropriate measurement scheme,a case study is conducted on an inclined shaft of sea-crossing tunnel of Qingdao metro.Multiple traverse measurement methods such as conventional double traverse measurement,virtual double traverse measurement,side intersection traverse measurement with multi-turning points,corner intersection traverse measurement with free station and multi-public points,and conventional double traverse measurement+gyro composite directional measurements are applied in the project.The application conditions,measurement efficiency,and effects of various methods are compared and analyzed,and the best measurement results are used to guide the construction of cross-sea tunnels,so as to ensure the high precision of tunnel penetration.The advantages,disadvantages,and application conditions of these measurement methods are summarized,providing guidance for traverse measurement inside tunnel without help of gyroscope.