中文摘要：

以双圆盾构隧道为研究对象，结合工程实例，给出了双圆盾构隧道变形基准和变形量的基本模型，并推导了变形量严格的数学求解公式．针对变形分析模型，又给出了计算机分析系统的实现，以及系统应用的流程和分析实例．目前系统已应用于上海某地铁的盾构隧道施工监测中。

英文摘要：

This paper presents a study of the double-circle shield tunnel based on an engineer case. A fundamental model of deformation datum and deformation value is established, and a mathematics equation of deformation value is deduced. A computer analysis system is then established for the deformation analysis model. The procedure of system application and the analysis of a practical case are presented. The system is now applied to the shield tunnel construction monitoring in Shanghai.