摘要
青草沙岛域段隧道工作井深度大、圆弧多,贯通测量难度较大,本文首先对本工程分析了控制测量中每个环节的设计精度。以1-2井东线地下导线的实际测量数据为例,通过各种导线分析方法,判断出1-2井东线导线的测量成果中的问题,并证明地面GPS控制测量和地下导线联系测量的完成和偏差均符合设计要求。文末提出保证隧道控制测量精度的几点措施,保证了剩余隧道的横向贯通误差控制在±50mm之内。
The tunnel working well in Qingcaosha island area has a large depth,many arcs,and it is difficult to make through survey.Firstly,this paper analyzes the design accuracy of each link in the control survey of the project.Taking the actual measurement of the underground traverse data of the east line of well 1-2 as an example,through a variety of traverse analysis methods,it is concluded that the connection survey of the east line of well 1-2 has obvious deviation,while the underground traverse survey and the ground GPS have obvious deviation conclusion that the control measurement meets the design requirements.Finally,the measures to ensure the accuracy of the tunnel control survey are put forward,which can ensure that the transverse through error of the other sections of the tunnel is within 5cm.
作者
邹锟
ZOU Kun(Shanghai Tunnel Engineering Co.,Ltd.,Shanghai,200032 China)
出处
《科技创新导报》
2020年第21期29-31,34,共4页
Science and Technology Innovation Herald
关键词
横向贯通误差
竖井联系测量
精度分析
质量控制
Horizontal penetration error
Shaft connection measurement
Accuracy analysis
Quality control
