渗漏是土坝工程最为常见且危害性极大的典型病害。快速探测与定位渗漏隐患,对保障工程安全具有极为重要的意义。充分考虑土坝渗漏与温度的关联特性,开展了基于红外热像的土坝渗漏非接触式探测方法及其试验研究,在对其基本原理与影响因素予以剖析的基础上,通过设计和搭建试验平台,开展了多种工况下的土坝渗漏红外热像探测试验,充分验证该探测方法可行的同时,明晰了土坝渗漏出口的温度发展规律及红外图像特征,可为土坝渗漏的快速探测和识别提供一定的经验参考。
Abstract
Leakage is the most common and harmful disease in earth dams. Rapid detection and location of the leakage is of great significance to ensure engineering safety. In consideration of the correlation between leakage and temperature of earth dam, we experimentally researched a non-contact detection method of earth dam leakage based on infrared thermography. Having expounded the detection mechanism and the factors affecting the accuracy, we carried out infrared thermal imaging experiments of earth dam leakage under various working conditions on an independently built detection experimental platform. The model experiments fully verified the feasibility of this detection method. Conclusions were also obtained in infrared image feature of earth dam leakage. The research findings offer reference for the rapid detection and recognition of earth dam leakage.
关键词
土坝 /
堤坝 /
渗漏探测 /
红外热像 /
模型试验
Key words
earth rock dam /
river embankment /
leakage detection /
infrared thermography /
model experiment
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基金
国家重点研发计划课题(2019YFC1510801);国家自然科学基金项目(52239009)
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