双金属标在潘家口大坝垂直位移中的应用  

Application of Bimetal Bench Mark in Vertical Displacement in Panjiakou Dam

作　　者：张云歧 李海星 ZHANG Yunqi;LI Haixing(Hebei Qianxi County Haiwei Luan Diversion Project Management Bureau,Tangshan 064300,China)

机构地区：[1]河北省迁西县海委引滦工程管理局,河北唐山064300

出　　处：《河南水利与南水北调》2022年第3期56-57,共2页Henan Water Resources & South-to-North Water Diversion

摘　　要：潘家口大坝变形观测主要包括水平位移,垂直位移的观测。潘家口垂直位移采用真空激光及静力水准方式进行的测量,原设计是在▽202廊道以下采用双金属管标,在▽202廊道以上采用竖直传高。由于在廊道内采用竖直传高误差来源较多,测值精度不容易控制,为提高垂直位移测点的观测精度,结合现场实际情况,在潘家口水库大坝安全监测自动化改造中分别在14#、51#坝段各设置了2套双金属管标,▽202廊道高程以下的双金属管标采用正装,▽202廊道高程以上双金属管标采用倒装的方法实现高程传递。改造实施后,测量精度达到规范要求,满足了监测自动化系统高程的传递,该传递方法可推广应用。The deformation observation of Panjiakou Dam mainly includes horizontal displacement and vertical displacement. The vertical displacement of Panjiakou is measured by vacuum laser and static leveling. The original design is to adopt bimetal bench marks below corridor ▽202 and vertical transmission above corridor ▽202. Because there are many error sources in vertical height transmission in corridor, it is not easy to control the measurement accuracy. In order to improve the vertical displacement observation accuracy of the measurement points, combined with the actual situation on the spot, two sets of bimetal bench marks are installed in dam sections 14# and51# respectively in the reform of the Panjiakou Reservoir Dam safety monitoring automation. The bimetal pipe mark below corridor elevation of ▽202 is installed in normal, and the bimetal bench mark above the elevation of Corridor ▽202 is inverted to realize the elevation transfer. After the implementation of the transfomation, the measurement accuracy meets the requirments of specification and the elevation transmission of the monitoring automation system is satisfied. The transmission method can be popularized and applied.

关 键 词：潘家口水库 监测自动化 垂直位移 双金属标 高程传递 

分 类 号：TV698.1[水利工程—水利水电工程]