Abstract: Manwan hydropower dam has been in operation for 30 years. This article reviews the improvement of horizontal control network and the instruments for monitoring of dam horizontal displacement, external slope deformation and dam seepage. As well, the development of automatic monitoring system is introduced. While elaborating on observation methods, data processing and development of automation, the further development direction is also presented, for reference.

Key words: Manwan hydropower station, dam safety, monitoring

摘要： 漫湾水电站大坝已建成投产30年。笔者对30年历程中平面控制网、大坝水平位移、边坡外部变形、大坝渗流监测设施的改进和监测自动化系统的发展等进行回顾，阐述了各监测项目在观测方法、监测设备、数据处理和监测自动化发展方面的改进，并指出了未来发展的方向，为同类大坝提供借鉴。

关键词: 漫湾水电站, 大坝安全, 监测