外海超长沉管隧道精密贯通测量设计与实践

摘要

Based on the engineering practice of the Hongkong-Zhuhai-Macao Bridge immersed tube tunnel through survey,we analyzed control network design,the implementation of the precision of estimation and improve the precision through survey technology in order to guarantee the immersed tube tunnel horizontal precision through.It is proved by engineering practice that the method is scientific and reliable,which meets the need of precision through survey of offshore super long immersed tube tunnel.%通过港珠澳大桥沉管隧道贯通测量的工程实践,探析了保证沉管隧道横向精密贯通而进行的控制网设计、精度估算及提高贯通精度的测量技术.经工程实践验证,该方法科学可靠,满足外海超长沉管隧道精密贯通测量的需要.