| 光纤传感器监测土堤渗漏和沉降模拟试验研究 |
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| 引用本文： | 冷元宝,朱萍玉,周杨,张清明,蒋桂林.光纤传感器监测土堤渗漏和沉降模拟试验研究[J].人民黄河,2012(1):9-10. |
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| 作者姓名： | 冷元宝 朱萍玉 周杨 张清明 蒋桂林 |
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| 作者单位： | 黄河水利科学研究院;水利部堤防安全与病害防治工程技术研究中心;湖南科技大学机电工程学院 |
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| 基金项目： | 水利部科技推广项目(TG1116) |
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| 摘 要： | 采用基于分布式光纤传感的渗流模拟监测方案,对严重渗漏引起的光纤传感器周边介质温度和应变变化进行了试验研究。结果表明:布置在渗漏通道周边的光纤传感器可以借助温度和应变的变化特征识别严重渗漏,光纤传感器不断下降的温度曲线预示渗漏的发生,应变曲线陡增则是严重渗漏引起土体沉降的判据。
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| 关 键 词： | 光纤传感器 堤坝 渗漏 温度 应变 |
Simulated Experimental Study on Seepage and Settlement Monitoring for Earth Embankment by Optical Fiber Sensor |
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| LENG Yuan-bao,ZHU Ping-yu,ZHOU Yang,ZHANG Qing-ming,JIANG Gui-lin.Simulated Experimental Study on Seepage and Settlement Monitoring for Earth Embankment by Optical Fiber Sensor[J].Yellow River,2012(1):9-10. |
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| Authors: | LENG Yuan-bao ZHU Ping-yu ZHOU Yang ZHANG Qing-ming JIANG Gui-lin |
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| Institution: | 1.Yellow River Institute of Hydraulic Research,YRCC,Zhengzhou 450003,China; 2.Safety and Disaster Prevention Engineering Technology Research Center,the Ministry of Water Resources,Zhengzhou 450003,China; 3.College of Electromechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China) |
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| Abstract: | A simulation method for seepage monitoring by distributed optical fiber sensing was proposed.Some experiments had been carried out to study the changes of temperature and strain of the medium around the optical fibers to reveal serious seepages.The experimental results show that the optical fiber sensors embedded near seepage path can identify serious seepage by the character of both change of the temperature and the strain.The continuously decreasing temperature curve indicates the seepage occurred.An abrupt dramatic strain increasing rate can be a criterion to forecast the settlement of the earth caused by critical seepage water. |
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| Keywords: | optical fiber sensor embankment seepage temperature strain |
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