摘要
收敛监测是隧道变形监测中的必测项目,全站仪在盾构隧道中能满足收敛监测的精度要求,利用误差传播定律,理论上对全站仪收敛监测精度进行公式推导分析。进一步分析实际收敛监测结果得出:入射角的变化对全站仪的监测精度影响较大,在一定距离和入射角范围内,全站仪反射片模式和免棱镜模式的监测精度均能达到收敛监测精度要求,且反射片模式监测精度高于免棱镜模式。
Convergence monitoring is a necessary project in tunnel deformation monitoring.This paper introduces the precision requirement of the total station instrument in the shield tunnel to meet the convergence monitoring.By using the law of error propagation,the formula of the convergence monitoring accuracy of total station instrument is deduced and analyzed theoretically.From further analysis of the actual convergence monitoring results,it can be concluded that the change of incident angle has a great influence on the monitoring accuracy of the total station,and the monitoring accuracy of the total station reflector mode and the prism-free mode can be achieved in the range of distance and angle of incidence,and the monitoring accuracy of the reflector is higher than that of the prism-free mode.
作者
陈浩
岁秀珍
楼亨庞
虞献军
CHEN Hao;SUI Xiuzhen;LOU Hengpang;YU Xianjun(Yiwu Geodetic Digital Surveying and Mapping,Co.Ltd,Yiwu 322000,China;Yiwu Design and Research Institute of Exploration and Surveying,Yiwu 322000,China)
出处
《山东交通学院学报》
CAS
2018年第2期70-76,共7页
Journal of Shandong Jiaotong University
关键词
隧道监测
收敛
全站仪
精度
入射角
tunnel monitoring
convergence
total station
accuracy
incident angle
