研究目的:为了研究渤海海峡海底特长隧道施工控制测量对施工贯通的影响，针对设计方案中最长贯通距离的海底特长隧道进行贯通误差估算分析，并根据贯通误差对施工控制网精度进行设计。研究结论:(1)影响隧道贯通误差有洞外GPS控制测量、洞内导线测量、洞外跨海高程传递和洞内水准测量四个方面，其中洞内导线控制测量和洞外跨海高程传递测量精度对贯通误差影响更为显著；(2)提出了渤海海峡海底最长开挖长度贯通面间的贯通误差限差和洞内外平面、高程控制网精度建议方案；(3)就目前的测量手段、方法和测量精度，对于渤海海峡海底特长隧道的开挖贯通在测量技术上是可行的，贯通误差是可控的；(4)研究成果对渤海海峡铁路通道海底隧道及类似工程施工控制测量的技术方案制定及实施具有参考价值。

In order to study the influence of the undersea tunnel of Bohai Strait construction control survey on construction completed, the breakthrough error is estimated and analyzed based on the designed undersea tunnel with the longest length. According to the breakthrough error, the precision of construction control network is designed. Research conclusions:(1)The breakthrough error of tunnel affected from four aspects, such as outside tunnel GPS control survey, inside tunnel traversing, outside height transfer across the strait and inside tunnel leveling. The inside tunnel traversing and outside height transfer across the strait have more significant impact on breakthrough error. (2)This paper has proposed some suggestions about the tolerance of breakthrough error of the Bohai Strait tunnel between the longest breakthrough faces, and the solution on precision design of horizontal and vertical control network of inside and outside tunnel. (3)By the current measuring tools, methods and accuracy, the surveying technology for the construction and the breakthrough of Bohai Strait undersea long tunnel is feasible, and its breakthrough error is controllable. (4)The research results have important reference value for the technical plan making and its implementation of construction control survey for undersea tunnel of Bohai Strait railway corridor and similar project.