【摘要】 本文结合西安地铁2号线工程,从贯通测量的误差分析角度出发,研究了高精度方位定向对改善导线精度的影响,在此基础上给出了高精度陀螺全站仪在长隧道贯通测量中应用的观测方案以及实测数据处理的理论与方法。实际贯通结果表明,加测陀螺方位角可以有效地削弱贯通误差,提高导线的精度和可靠性,用加测陀螺方位的成果指导施工,顺利地实现了隧道的贯通。更多还原

【Abstract】 The influence of errors on the through-survey is discussed with construction of Xi’an metro line 2 tunnel. A feasible scheme using Gyro Total Station measurement is proposed. Data processing theory and method are also introduced with a successful tunnel transfixion case. The results show that through error can be eliminated effectively by including gyrotheodolite azimuth and the traverse accuracy and reliability can be improved.更多还原