近景摄影测量支持下的地铁盾构管片姿态测量方法及其应用
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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.
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.
引文
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[2]戴水财,杨李龙.基于椭圆的盾构隧道管片姿态及形变检测方法研究[J].工程勘察,2015,43(1):76-79.
[3]冯文灏.近景摄影测量物体外形与运动状态的摄影法测定[M].武汉:武汉大学出版社,2002.
[4]李德仁,王树根,周月琴.摄影测量与遥感概论[M].北京:测绘出版社,2008.
[5]何辉明,胡伍生,王克宇.摄影测量光束法加密精度的分析[J].测绘通报,2004(2):13-15.
[6]梁晓娜.近景摄影测量在边坡变形监测中的研究[D].长春:吉林建筑大学,2015.
[7]张春森,冯鹏飞.相机检校控制场像点坐标自动定位与高精度量测[J].测绘科学,2015,40(3):76-79.
[8]徐辛超,徐爱功,马力,等.镜头畸变参数对航测像点量测精度的影响[J].测绘通报,2017(4):30-34.
[9]曹良中,杨辽,阚培涛,等.地面检校场的非量测型数码相机检校[J].测绘科学,2015,40(2):132-137.
[10]王海涛,洪亮,谭成国.一种用于相机检校的黑白棋盘格角点提取算法[J].测绘通报,2016(12):33-38.
[11]徐斌,李英成,刘晓龙,等.附加约束条件的光束法区域网平差在四拼数码航空相机平台检校中的应用[J].测绘学报,2014,43(1):66-73.
[12]张剑清,胡安文.多基线摄影测量前方交会方法及精度分析[J].武汉大学学报(信息科学版),2007,32(10):847-851.
[13]李天子,刘志奇,杨振明,等.基于近景摄影测量的基坑土方量计算及精度评价[J].测绘工程,2017,26(9):36-40.
[14]XIAO D,TAN L,SU Y.Non-contact detection algorithm and realisation of displacement of suspended cylinder[J/OL].Survey Review,2017(2017-08-07)[2018-04-02].http:doi.org/10.1080/00396265.2017.135.7892.
[15]徐绍铨,张华海,杨志强,等.GPS测量原理及应用[M].武汉:武汉大学出版社,2008.