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利用光导纤维测定温度和温度分布 ,是一项崭新的应用技术。该技术利用光纤作为温度传感器 ,埋设于混凝土坝内 ,可以连续测量混凝土的温度分布。介绍光导纤维温度计的基本原理 ,并对日本某混凝土坝的实测温度场进行分析 ,与传统温度计的测量结果进行对比。结果表明 ,光纤温度精度高、密度大 ,而且通过高精度测量 ,还可以推测坝体的浸漏位置 ,在混凝土坝温度场测量及监控方面将有很好的应用前景。
The use of optical fiber temperature and temperature distribution is a new application technology. The technology uses optical fiber as a temperature sensor, embedded in concrete dams, continuous measurement of the temperature distribution of concrete. The basic principle of optical fiber thermometer is introduced. The measured temperature field of a concrete dam in Japan is analyzed and compared with that of the traditional thermometer. The results show that the optical fiber has high temperature precision and high density, and the leakage location of the dam body can be inferred through high-precision measurement. Therefore, it has a good application prospect in the measurement and monitoring of the temperature field of the concrete dam.