轨道交通工程盾构区间贯通测量误差预计及实践

Prediction and Practice of Holing Through Error in Shield Section of Rail Transit Project

为解决盾构法施工过程中,因控制测量误差过大造成隧道贯通误差超限问题,采用贯通测量误差预计的方法,分析在隧道施工过程中可能引起测量误差的几种因素,并针对这几种因素采取相应的措施,以降低测量误差的积累,达到使隧道顺利贯通的目的。结果表明:通过施工前期的贯通测量误差预计,指定良好的测量方案,能够解决贯通误差超限的问题。

In order to solve the problem of tunnel breakthrough error caused by control measurement in the construction of shield tunneling method, several factors of measurement error in tunnel construction process are analyzed, and corresponding measures are taken to reduce the accumulation of measurement error to achieve the purpose of tunnel. The results show that through the connect measurement error prediction, the specified measurement scheme can solve the problem of breakthrough error.