摘要
城市轨道交通工程贯通误差要求严格,而隧道长度及测量精度又对贯通精度起决定性影响,因此对长隧道施工,施工前及过程中对贯通误差进行分析及控制测量方案优化尤为关键。本文结合合肥市轨道交通5号线工程实例,对丽-清区间地下导线测量对贯通误差的影响进行了分析,并通过陀螺定向及双导线测量方法对隧道内导线方位角进行检核,确保了隧道的顺利贯通,可为其他城市轨道交通长隧道施工控制测量提供借鉴。
Urban rail transit engineering has strict requirements for penetration errors,and tunnel length and measurement accuracy have a decisive impact on penetration accuracy.Therefore,for long tunnel construction,analysis of penetration errors before and during construction and optimization of control measurement schemes are particularly critical.Based on the Hefei Rail Transit Line 5 project,this paper analyzes the influence of the underground traverse measurement of the Li-Qing tunnel section on the penetration error,and checks the azimuth angle of the traverse in the tunnel through the gyro-oriented and dual-wire measurement methods.It ensures the smooth passage of the tunnel,which can provide a reference for other urban rail transit long tunnel construction control surveys.
作者
费先明
Fei Xianming(Beijing Urban Construction Exploration&Survey Design Research Institute Co.,Ltd.,Beijing 100101,China)
出处
《城市勘测》
2021年第6期139-142,共4页
Urban Geotechnical Investigation & Surveying
