长大隧道洞内短边高精度方位角传递测量方法及其精度验证实验  

High-precision Azimuth Transfer Measurement Method for Short Side in Long Tunnel and Its Precision Validation Experiment

作　　者：杨帆 曹体涛[3] 杨雪峰[1,2] 刘成龙 YANG Fan;CAO Titao;YANG Xuefeng;LIU Chenglong(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;State-province Joint Engineering Laboratory in Spatial Information Technology for High-Speed Railway Safety,Southwest Jiaotong University,Chengdu 611756,China;China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China)

机构地区：[1]西南交通大学地球科学与环境工程学院,四川成都611756 [2]西南交通大学高速铁路运营安全空间信息技术国家地方联合工程实验室,四川成都611756 [3]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《测绘与空间地理信息》2022年第6期35-38,共4页Geomatics & Spatial Information Technology

基　　金：川藏铁路平面控制测量关键技术研究(KDNQ202030)资助。

摘　　要：为了提高工程效率,长大隧道通常以设置斜井、横洞以及平行导洞等辅助坑道的方式实现长隧短打,而各坑道与正洞连接处一般十分狭窄且不易通视,因此在洞内的平面联系测量工作中经常会出现50 m以下的短边,而短边方位角传递的精度往往难以控制。本文介绍了两种有效且便于实施的短边方位角高精度联系测量方法:一种为自由测站与固定测站相结合的测量方法;另一种为多公共转点侧方边角交会测量的方法。针对上述两种方法,本文设计了实际测量实验进行精度验证,实验结果表明两种方法均可以实现高精度的短边方位角传递测量。In order to improve the engineering efficiency,service galleries such as inclined shafts,transverse galleries and parallel drifts are usually set up to realize the short excavation of long tunnels.However,the joints between service galleries and main tunnel are generally narrow and have poor intervisibility conditions.Therefore,the short side below 50 m is usually found in the plane transfer survey of tunnel,and the azimuth transmission accuracy of short side is often difficult to control.This paper introduces two effective and easy to implement short side azimuth high-precision transfer survey methods,one is the combination of free station and fixed station measurement method,the other is the intersection measurement method of multi common points.For the above two methods,this paper designs the measurement experiment to verify the accuracy.The experimental results show that the both methods can achieve high-precision short side azimuth transfer measurement.

关 键 词：长大隧道 短边测量 多公共转点 方位角传递 自由测站 

分 类 号：P25[天文地球—测绘科学与技术] TB22[天文地球—大地测量学与测量工程]