摘要
传统的地铁盾构管片姿态测量的方法存在作业时间长,与施工流水线交叉作业劳动量大,且无法实时测量等不足。本文提出了利用近景摄影测量的方法对盾构管片姿态进行测量,通过在盾构管片环上铺设人工标志点,使用数码相机进行拍摄,利用光束法平常对摄影图片进行数据解算,得到解算标志点坐标后,再根据空间三点定圆心原理确定盾构环圆心点的坐标。试验结果表明,对比传统测量方法,新方法误差不超过3 cm,能够完全满足盾构管片姿态的测量精度要求,具有很好的推广价值。
Traditional posture measurement of subway shield has the disadvantage of long operation time,cross operation with the construction line,a large amount of labor,and the unavailability of real-time measurement.In this paper,the method of close-range photogrammetry is used to measure the shield segment posture.The artificial marks are laid on the shield ring to make digital camera shoot,and the flux of light method is used to process data solution for shot pictures.Finally,the coordinate of the shield ring's center point is determined based on the space three-point determination of the circle center after getting the coordinate of the signalized point. The experimental results show that the error of the traditional measurement method is within 3 cm,which can completely meet the measurement accuracy requirement of the shield segment's posture,with good promotion value and economic benefits.
作者
徐洲洋
肖东升
XU Zhouyang;XIAO Dongsheng(Department of Surveying and Mapping Engineering,School of Civil Engineering and Architecture,Southwest Petroleum University, Chengdu 610500,China)
出处
《测绘通报》
CSCD
北大核心
2019年第1期75-78,143,共5页
Bulletin of Surveying and Mapping
基金
国家自然基金(面上项目)(517704250)
四川省科技创新(苗子工程)培育项目(2017098
2018059)
关键词
地铁
盾构管片姿态测量
近景摄影测量
数码相机
subway
shield tube attitude measurement
close range photogrammetry
digital camera
