本文就城市轨道交通的隧道结构断面的测量方法进行了研究,提出了一种采用地面激光扫描仪技术的测量方法,研究了此方法的主要工作流程、基本原理和方法。把此方法用到天津城市轨道交通二号线工程,使用地面激光扫描仪测量隧道的结构断面,其精度和效率较常规仪器和方法都有显著提高。 In this paper, the measurement method of tunnel structure section of urban rail transit is studied. A measurement method based on ground laser scanner technology is proposed. The main work flow, basic principle and method of this method are studied. This method is applied to Tianjin Urban Rail Transit Line 2 project, the use of ground laser scanner measuring the structural cross section of the tunnel, the accuracy and efficiency than the conventional instruments and methods have significantly improved.