测量机器人在运营地铁隧道监测中的应用研究

魏双

摘 要

随着城市经济的发展，我国地铁交通建设的规模逐渐扩大，在我国基础建设工程中占有重要地位。地铁促进经济发展的同时沿线的商业项目对地铁安全运营造成了不利影响。因此对地铁隧道进行自动化监测及时掌握隧道结构安全情况具有重要意义。

本论文基于索佳测量机器人在武汉运营地铁隧道监测中的应用研究，具体研究内容如下。首先介绍研究背景和研究意义，对测量机器人的国内外研究成果进行了总结综述。其次详细介绍了自动变形监测系统的组成、测量原理及应用要点，根据地铁隧道监测环境的特点提出了采用自由设站法和极坐标法来确定工作基站和监测点的三维坐标。然后详细介绍了工程的地质情况、位置关系，并分析了测量机器人在隧道监测的可行性，制定了隧道监测专项实施方案，系统阐述了自动变形监测的实施过程。最后对变形监测数据进行改正处理和精度分析，测量结果满足隧道监测精度要求，分析了隧道结构的局部变形特征，变形最大位移点发生在基坑开挖见底工况，与现场施工进展所导致的周边土体变形基本一致，达到了地铁隧道监测的预期目标。分析了基坑开挖和施工降水对隧道结构变形的影响，对工程施工和地铁维护提出了合理化建议。

关键词：测量机器人；地铁隧道；自动变形监测；数据分析

Abstract

With the development of urban economy, subway construction，with its scale which is gradually expanding, occupies an important position in the infrastructure projects in China. The subway construction promotes economic development. Meanwhile, the construction of the commercial projects along the line has adverse effects on the safety of subway operation. Therefore, it is of great significance to monitor the subway tunnel automatically and get clear about the safety of the tunnel structure in time.

This paper is based on the research of applying SOKKIA measurement robot in Wuhan Metro tunnel monitoring. What follows is the detailed research content. Firstly, the research background and significance are introduced. And the research achievements at home and abroad about measurement robots are summarized. In addition, the composition, measurement principles and application key points of the automatic deformation monitoring system are introduced in detail. According to the characteristics of the subway tunnel monitoring environment, the free station setting method and polar coordinate method are proposed to determine the three-dimensional coordinates of the working base station and monitoring points. Furthermore, the geological situation and position relationship of the project are introduced in detail, and the feasibility of the measurement robot’s monitoring in the tunnel is analyzed. The special implementation scheme of the tunnel monitoring is formulated, and the implementation process of the automatic deformation monitoring is systematically described. And he deformation monitoring data are corrected and analyzed. The measurement results meet the requirements of tunnel monitoring accuracy. The partial deformation characteristics of the tunnel structure are analyzed. The maximum deformation point occurs at the bottom of the excavation of the foundation pit, which is basically consistent with the deformation of the surrounding soil caused by the progress of the site construction. And the target of subway tunnel monitoring is achieved. Finally, this paper analyzes the influence of foundation pit excavation and construction dewatering on the deformation of tunnel structure, and puts forward reasonable suggestions on the construction of projects surrounding subways and subway maintenance.

Key words: Measurement robot, Subway tunnel, Automatic deformation monitoring , Data analysis