基于陀螺全站仪的地铁贯通定向分析应用

Application of Metro Holing Through Orientational Analysis Based on Gyroscopic Total Station

地铁隧道工程的开挖掘进由于缺少可靠的检核条件,导致控制导线的精度较低,大大影响了隧道的贯通精度。本文采用高精度的陀螺全站仪通过逆转点方法对地铁隧道进行加测陀螺定向边,并对陀螺仪的定向原理进行分析利用,结合相应的计算公式进行优化分析,得到精确的导线边方位角。通过验证确保了成果的可靠性,有效提高了控制网的精度,减小了导线网的测角误差积累及地下导线测量最弱边对地铁贯通的影响,保障地铁隧道顺利贯通。

The excavation and driving of subway tunnel projects often suffer from low accuracy of control traverse due to the lack of reliable inspection conditions,which significantly affects the holing through accuracy of the tunnel.This paper adopts a high-precision gyroscopic total station to perform gyroscopic orientation side reinforcement measurements on subway tunnels through the reversal point method and analyzes and utilizes the orientation principle of the gyroscope.Combined with corresponding calculation formulas,optimization analysis is conducted to obtain precise traverse side azimuths.Through verification,the reliability of the results is ensured,effectively improving the accuracy of the control network,reducing the accumulation of angular measurement errors in the traverse network,and mitigating the impact of the weakest side of the underground traverse measurement on subway holing through,thereby ensuring the smooth holing through of subway tunnels.