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首页> 外文期刊>Journal of Applied Geophysics >Temporal changes of soil temperature with soil water content in an embankment slope during controlled artificial rainfall experiments
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Temporal changes of soil temperature with soil water content in an embankment slope during controlled artificial rainfall experiments

机译：人工降雨控制下路堤边坡土壤温度随土壤含水量的时间变化

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Monitoring of soil water behavior is crucial for the prediction of disastrous slope failures. To improve the ability of engineers to detect temporal changes in soil water content on a slope, we investigated whether or not soil temperatures, which are relatively easy to obtain, could be used as indicators of changes in the soil water content. In order to evaluate the relationship between changes in soil temperature and soil water content, the soil temperature and volumetric water content in a slope on an embankment were measured during controlled rainfall experiments using a large-scale rainfall simulator at the National Research Institute for Earth Science and Disaster Prevention in Japan. Soil temperature was measured with highly accurate sensors at depths of 0, 0.2, 0.4, 0.6, and 0.8 m at four sites on the slope. Volumetric water content was measured at depths of 0.2 and 05 m at two sites. The results showed that for many sampling sites the soil temperature increased with the volumetric water content once the rainfall began. Three types of soil temperature behavior were observed: 1) a steep rise, 2) a gradual rise, and 3) a negligible change. The relationship between the elapsed time from the start of rainfall to the start of soil temperature rise and volumetric water content rise implies that soil temperature monitoring using highresolution sensors is a viable way to detect general volumetric water content behavior due to rainfall infiltration during various rainfall events. These results also indicate that soil temperature monitoring has the potential to improve the understanding of soil water behavior in a slope, which is dependent on rainwater infiltration. (C) 2015 Elsevier B.V. All rights reserved,
机译：监测土壤水分行为对于预测灾难性的边坡破坏至关重要。为了提高工程师检测斜坡上土壤含水量随时间变化的能力，我们调查了相对容易获得的土壤温度是否可以用作土壤含水量变化的指标。为了评估土壤温度变化与土壤含水量之间的关系，使用美国国家地球科学研究所的大型降雨模拟器在受控降雨实验中对路堤边坡上的土壤温度和体积含水量进行了测量。和日本的防灾。用高精度传感器在斜坡的四个位置分别以0、0.2、0.4、0.6和0.8 m的深度测量土壤温度。在两个位置的0.2和05 m深度处测量了体积水含量。结果表明，对于许多采样点来说，一旦降雨开始，土壤温度就会随着体积含水量的增加而升高。观察到三种类型的土壤温度行为：1）陡峭的上升，2）逐渐上升，和3）可以忽略不计的变化。从降雨开始到土壤温度升高开始所经过的时间与体积水含量升高之间的关系表明，使用高分辨率传感器进行土壤温度监测是检测由于各种降雨事件期间降雨入渗引起的总体体积水含量行为的可行方法。 。这些结果还表明，土壤温度监测有可能增进对坡度土壤水行为的了解，而坡度取决于雨水的渗透。 （C）2015 Elsevier B.V.保留所有权利，

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