基于分布式光纤传感的堤坝安全监测技术及展望

及时、准确地掌握堤坝的性态，是保证堤坝安全运行的基础.因此，需要一种实时监测系统对堤坝进行监测.分析了堤坝健康监测的主要内容，介绍了分布式光纤传感技术的工作原理及使用现状；探讨了分布式光纤传感技术在我国堤坝渗流和形变中的应用；指出了分布式光纤传感技术在土堤坝使用中存在的问题，并给出了新的堤坝长期安全监测系统设计建议，结论有益于指导构建新的基于分布式光纤技术的堤坝安全监测系统.

Monitoring technology for embankment dam safety based on distributed optical fibre sensing and its prospect

Knowing the operating condition of an embankment dam exactly is the base to guarantee it to operate safely. There is a growing need for real-time monitoring systems for embankment dams, due to problems of hidden dangers. The main detection parameters for health monitoring of an embankment dam are analyzed. The principle of operating of a monitoring technology based on distributed fiber sensing for embankment dam safety is introduced. Recent application of the technology is presented. The prospect of the application of the technology of distributed fiber sensing adapted to the detection of seepage flow and movement in China has been discussed. Some weak points in current safety monitoring instrument based distributed optical fiber sensing technology for the soil embankment dam is presented. Helpful suggests are given to design next generation instruments, which provides a guide to construct a new safety monitoring system for an embankment dam.