Abstract: By analyzing the stability of datum in dam deformation monitoring system in Nangao hydropower station, this article revealed the existing problems and influencing factors on horizontal displacement and vertical displacement monitoring system. Moreover, some suggestions on the monitoring system are put forward in this article, which provided the help for the dam safety managers.

摘要： 通过对南告水电站大坝变形监测系统中基点的稳定性分析，揭示出大坝水平位移、垂直位移监测系统中存在的问题及影响因素，同时对监测系统提出了几点建议，为今后大坝安全管理提供有益的依据。