倒垂线作为大型建筑物变形监测的基准设施，广泛应用于大型水利枢纽工程中。
The inverted perpendicular, being a deformation monitoring datum with large-scale building, is widely applied to the water resource projects.
倒垂线在大坝变形监测中是一个观测基准点，其安装精度的高低直接影响着大坝变形的观测精度。
The inverted vertical in dam distortion monitoring is an observing reference point, the installation precision of which affects the observation precision.
介绍岩滩水电站大坝倒垂线观测系统的倒垂线孔钻孔的孔斜控制、孔斜测量、孔斜纠偏等施工技术及廊道内遇长岩芯的处理方法。
This paper introduced construction technique of the inverted vertical line survey system, boring, hole slope measuring, slope correcting, etc. of the Yantan hydropower station.
文中介绍了飞来峡大坝安全监测系统倒垂线断裂后主要的修复处理方案、技术要求和施工过程，为水利工程中类似问题提供参考。
This paper introduces the main restoring treatment plan, technical request and construction process after the plumb-line of dam safety monitoring system was broken in Feilaixia Hydro Project.
大坝蓄水运行期间的观测结果显示大坝的变形符合一般的变形规律。坝体的垂直位移变形值在设计要求之内，说明倒垂线系统安装是成功的。
Moreover, it is successful to use the inverted vertical system for the observation of dams, and the installation method as mentioned here is also successful.
大坝蓄水运行期间的观测结果显示大坝的变形符合一般的变形规律。坝体的垂直位移变形值在设计要求之内，说明倒垂线系统安装是成功的。
Moreover, it is successful to use the inverted vertical system for the observation of dams, and the installation method as mentioned here is also successful.
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