为保证盾构施工安全，防止盾尾在施工过程中漏浆，施工前须对盾尾圆度进行检测。通过对3D摄影测量检测系统测量设备、测量原理及方法进行阐述，并通过实例对盾尾各部分相对于标准设计图形的具体偏差进行分析。主要结论如下： 1）采用3D摄影测量新技术，能快速、准确地检测出盾尾圆度； 2）3D摄影测量技术方法在盾尾质量检测上的成功应用，为盾构等重大装备构件尺寸误差质量比对提供了一种新方法。

The circular degree of shield tails should be inspected before the shield machines start boring, so as to guarantee the safety of shield tunneling and to avoid slurry leakage. The 3D photogrammetry measuring system is presented in terms of facility, theory and method. The deviation between the designed circular degree of shield tail and actual circular degree is measured and analyzed. The conclusions drawn are as follows: 1)The circular degree of shield tail can be measured rapidly and exactly by means of 3D photogrammetry technology. 2)The successful application of 3D photogrammetry technology in the quality inspection of the shield tail can provide reference for the quality inspection of shield machines in the future. 