陀螺全站仪定向计算方法在隧道贯通测量中的应用  

Application of gyroscope orientation calculation method in tunnel penetration survey

作　　者：王露 李涛 郭千楠 WANG Lu;LI Tao;GUO Qiannan(Changjiang River Estuary Bureau of Hydrology and Water Resources Survey,Bureau of Hydrology,Changjiang Water Resources Com-mission,Shanghai 200136,China)

机构地区：[1]长江水利委员会水文局长江口水文水资源勘测局,上海200136

出　　处：《水利水电快报》2021年第10期43-46,共4页Express Water Resources & Hydropower Information

摘　　要：为了提高陀螺全站仪在隧道贯通测量中的测量精度,在传统陀螺仪隧道贯通测量方法的基础上,提出了在隧道出口已知边加测陀螺方位角,得出隧道内待定边方位角取平均的测量方法。使用GYRO-MAT 3000陀螺全站仪进行工程实际验证,分析了用取平均法进行陀螺全站仪定向计算的精度。结果表明:取平均法与传统方法计算的定向精度分别为±2.9″和±4.1″,分析认为主要误差来源是陀螺仪本身的定向误差和子午线收敛角的计算误差,取平均法精度较高,较传统方法提高了30%。In order to improve the measuring accuracy of gyro total station in tunnel penetrating survey,in this paper,based on the traditional gyroscopic tunnel holing-through survey method,it is suggested that a gyroscopic azimuth angle is added to the known side of the tunnel exit,and then a measurement method for averaging the azimuth angles of the undetermined sides in the tunnel will be obtained.By using GYROMAT3000 gyro total station on actual engineering,the accuracy of using averaging method for gyroscope orientation calculation is analyzed.The contrastive analysis shows that orientation accuracies calculated by the averaging method and traditional calculation method were±2.9″and±4.1″.The analysis believes that the main source of error is the orientation error of the gyroscope itself and the calculation error of the meridian convergence angle.Theoretically,the averaging method's accuracy is 30%higher than traditional method.

关 键 词：隧道贯通 工程测量 陀螺定向 坐标方位角 子午线收敛角 取平均法 

分 类 号：U452.1[建筑科学—桥梁与隧道工程]