Research in and Application of Distributed Optical Fiber Monitoring System at Concrete Dam

Electric temperature sensor is used for traditional temperature measurement of dam body,but there are problems of small information content and difficulity in monitoring temperature field variation of internal dam body.Therefore,a research was made on applying distributed optical fiber sensing technique for temperature measurement.According to ordinary temperature monitoring methods,and with consideration on application of the technique in Lechang gorge hydro-junction project,through comparision with ordinary temperature monitoring system,the article mainly discusses feasibility and advancement of using distributed optical fiber temperature measurement system for roller compacted concrete dam.At the same time,the author makes a prospect for the technique in other safety monitoring fields.