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.
出处
《测绘科学》
CSCD
北大核心
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)
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
extra-long tunnel
in-tunnel horizontal control network
free-station linear-angular intersection network
lateral transfixion error
precision estimation
