基于分布式光纤测温的高拱坝蓄水初期实测温度场分析

发布时间：2018-01-08 20:36

本文关键词：基于分布式光纤测温的高拱坝蓄水初期实测温度场分析　出处：《水电能源科学》2016年03期 　论文类型：期刊论文

【摘要】：蓄水初期坝体内部实际温度分布状态对高拱坝的安全运行具有重要意义,基于分布式光纤测温原理,运用sufer8.0绘图软件绘制各蓄水阶段的拱冠梁坝段实测温度等值线图,根据温度等值图可直观分析坝体内的温度场分布状态,并结合西南某高拱坝施工期及蓄水初期光纤实测温度资料,判断得出该高拱坝坝体温度场分布大致合理,温度控制措施合理有效。由此表明,基于分布式光纤测温方法简单、结果可靠,可满足实际现场运行监测需要。
[Abstract]:The actual temperature distribution state of the dam body in the early stage of water storage is of great significance to the safe operation of the high arch dam, and it is based on the principle of distributed optical fiber temperature measurement. The actual temperature isoline diagram of arch crown beam dam section is drawn by using sufer8.0 drawing software. According to the temperature equivalent map, the temperature field distribution state in the dam body can be analyzed intuitively. Combined with the temperature data measured by optical fiber during the construction period and the initial storage period of a high arch dam in southwest China, the temperature field distribution of the dam body is generally reasonable and the temperature control measures are reasonable and effective, which shows that the temperature field of the high arch dam is reasonable and effective. The temperature measurement method based on distributed optical fiber is simple and reliable.
【作者单位】：三峡大学水利与环境学院;武汉大学水利水电学院;
【基金】：国家自然科学基金项目(51479103)
【分类号】：TV642.4
【正文快照】： 1引言高拱坝因坝高较大,一般进行分期蓄水[1],其中初次蓄水对拱坝运行至关重要,并检验此时拱坝的工作性态(包括坝体温度场、大坝变形等)是否达到设计标准[2,3]。目前,高拱坝大体积混凝土内部温度场的计算一般有两种方法[4]:1由混凝土内部埋设的分布式或点式温度计测温绘制实测

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