二郎坝电站引水隧洞施工控制测量

Control measurement of water diversion tunnel of Erlangba Hydropower station

阐述了在二郎坝水电工程引水隧洞项目中控制测量施工的应用体会，对施工控制点的布设、测量以及施工过程中复测结果、放线过程和成果进行了理论计算分析，使该小断面长输水洞顺利贯通。本文是控制测量在长隧洞施工成功应用的经验总结。

The application of control measurement in construction of water diversion tunnel are summarized in this paper, which include analysis of the control nodes arrangement, the implementation of measurement, and the re checking in construction, shaking out construction lines, all of these measures ensured the perforation of tunnel with long length but small section.