基于分布式光纤温度传感技术的库水温度测量方法及应用

详细介绍基于分布式光纤温度传感技术的库水温度测量系统与测量方法。结合思安江水库工程,提出测温光纤布置方案与布设工艺。在周边缝与19号和15号面板共布置1 044.7m传感光纤,采用分布式光纤温度测量系统对思安江水库不同时期与不同水位的库水温度进行测量,并分析测量数据。结果表明:库水温度曲线可分为快速下降、缓慢下降和稳定不变3个阶段,在距水面60 m以下库水温度保持在11℃左右。最后,对该测量方法进行讨论,论证了该方法的可行性与可靠性。

Application of reservoir water temperature measuring method base on distributed optical fiber temperature sensing technology

The reservoir water temperature measuring system and method based on distributed optical fiber sensing technology were introduced.The scheme and technology for the layout of sensing optical fibers were proposed with regard to Si'anjiang Reservoir.The optical fibers 1 044.7 m in length were used in circumference joints and panel No.19 and No.15.The water temperatures of Si'anjiang Reservoir at different time and water levels were measured by use of the proposed system,and the measured data were analyzed.It is concluded that the curve of the water temperature consists of three stages of fast variation,slow variation and steady state,and the water temperature maintains about 11℃ below the surface 60 m in depth.The feasibility and reliability of the proposed method are proved.