长大隧道洞内自由测站边角交会网平面控制测量  

Horizontal control survey of in-tunnel free-station linear-angular intersection network for extra-long tunnel

作　　者：邹浜[1] 刘成龙[1] 王鹏[2] 马洪磊[1] 杨雪峰[1] 

机构地区：[1]西南交通大学地球科学与环境工程学院,成都610031 [2]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《测绘科学》2014年第10期42-47,共6页Science of Surveying and Mapping

基　　金：中央高校基本科研业务费专项基金(SWJTU12ZT07)

摘　　要：为了减小长大隧道洞内控制网中的横向贯通误差,文章提出一种隧道洞内平面控制测量新方法——自由测站边角交会网。文中介绍了自由测站边角交会网的网型特点、外业观测方法和内业数据处理方法,并提出了自由测站边角交会网的附合路线闭合差和横向贯通误差计算等方法。通过对洞内横向贯通中误差进行估算并结合仿真测量实验,验证了自由测站边角交会网应用于隧道洞内平面控制中的可行性,实验表明,自由测站边角交会网在削减横向贯通误差等方面,要优于传统的导线网。To reduce the lateral transfixion error in in-tunnel control network of extra-long tunnel,the paper proposed the method of free-station linear-angular intersection network.It introduced the characteristics of the network,the observation method of field work and the data processing of interior work,and the calculation of the annexed lines closure and lateral transfixion error of free-station linear-angular intersection.Simulation experiment and the estimate result of the transfixion MSE verified the feasibility of free-station linear-angular intersection network.It was demonstrated that the method could reduce much more lateral transfixion error than traversing.

关 键 词：长大隧道 洞内平面控制网 自由测站边角交会网 横向贯通误差 精度估算 

分 类 号：P221[天文地球—大地测量学与测量工程] TB22[天文地球—测绘科学与技术]