Abstract: Houziyan concrete face rockfill dam (CFRD) is constructed in a narrow river valley which is not symmetrical. There will be large deformation in the dam after building. Reliable and stable monitoring system is critical for the dam. To establish an integrated monitoring system, Houziyan CFRD has not only summarized the successful experience of traditional monitoring techniques but also used some latest technologies such as fiber optical gyroscope, magnetic technology and distributed optical fiber temperature measurement system. This article elaborates three monitoring items, namely horizontal and vertical displacement, face slab deflection and leakage. And, the application principle of these technologies are analyzed as an example of reference to similar projects.

Key words: Houziyan concrete face rockfill dam, safety monitoring, traditional technology, fiber optical gyroscope, magnetic technology, fiber sensor technique

摘要： 猴子岩面板堆石坝位于地形复杂的“深切型”不对称河谷，坝体后期变形较大。可靠、稳定的安全监测系统是大坝的关键性技术问题。在总结常规监测技术的基础上，猴子岩工程引进光纤陀螺、磁惯导、光纤测渗漏等新型面板堆石坝监测技术，建立了一套完善的安全监测系统。笔者介绍了坝体水平垂直位移、面板挠度、渗流渗压三个监测项目，分析了各监测技术应用原理，供类似水电工程借鉴。

关键词: 猴子岩面板堆石坝, 安全监测, 常规技术, 光纤陀螺系统, 磁惯导系统, 光纤传感技术