GAT-D陀螺经纬仪在长盾构区间测量中的研究与应用  

Research and Application of GAT-D Gyro Theodolite in Long Shield Interval Measurement

作　　者：朱辉 ZHU Hui(Xuzhou Research Institute of Surveying and Mapping Co.Ltd.,Xuzhou 221000,China)

机构地区：[1]徐州市勘察测绘研究院有限公司,江苏徐州221000

出　　处：《工程建设与设计》2022年第5期133-135,共3页Construction & Design for Engineering

摘　　要：长盾构区间的贯通是地下工程测量的重难点,采用陀螺经纬仪定向可有效提高隧道贯通精度。论文介绍了陀螺经纬仪的基本原理,以某盾构区间为例,将国产GAT-D系列陀螺经纬仪投入至地铁施工中,对长盾构区间控制点进行陀螺定向测量,并将陀螺定向成果与联系测量支导线方位角进行检核。研究表明:GAT-D陀螺经纬仪定向精度满足相关规范要求,可应用于长盾构区间测量,在测量时需注意定向精度受仪器振动、温度、子午线收敛角等因素影响。The completion of long shield section is a heavy and difficult point of underground engineering measurement,and the orientation of gyro theodolite can effectively improve the accuracy of tunnel penetration.This paper introduces the basic principle of the gyro theodolite.Taking a shield interval as an example,the domestic GAT-D series gyrotheodolite is put into the subway construction to measure the control point of the long shield section,and check the gyro orientation results and the azimuth of the contact measurement branch wire.The study shows that the directional accuracy of the GAT-D gyro theodolite meets the relevant specifications and can be applied to the long shield interval measurement.It should be paid attention to the directional accuracy that is affected by the instrument vibration,temperature,radial convergence angle and other factors.

关 键 词：陀螺定向 盾构区间 子午线收敛角 

分 类 号：TU198[建筑科学—建筑理论] TH761.1[机械工程—仪器科学与技术]