轨道交通盾构隧道控制贯通精度设计

Research on Control Precision Design of Rail Transit Shield Tunnel

摘要: 本文论述盾构隧道洞外控制测量、洞内控制测量精度设计的主要内容，对贯通误差的估算方法进行了较详细的研究，就GNSS、精密导线等测量方法在的洞内贯通误差估算进行了分析、推导、计算，结合广州地铁1号线东杨区间隧道控制测量贯通精度进行论证，根据盾构隧道贯通测量估算预计提出合理的配赋的具体数值，最后提出了提高隧道洞内控制测量精度的措施，可供隧道测量同行参考。

Abstract: This paper discusses the main content of the shield tunneling control measurement and the accu-racy measurement design of the borehole control. The method of estimating the penetration error is studied in detail. The estimation of the through-hole error in the measurement method of GNSS and precision wire is carried out. Analysis, derivation, calculation, combined with the control accu-racy of the Dongyang interval tunnel of Guangzhou Metro Line 1 to demonstrate the specific value of the reasonable assignment of the shield tunneling measurement estimate, and finally propose to improve the control accuracy of the tunnel. The measures are available for tunnel peer reference.