| 土壤水入渗均匀特性的染色示踪试验研究 |
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| 引用本文： | 谢华,王康,张仁铎,唐友生. 土壤水入渗均匀特性的染色示踪试验研究[J]. 灌溉排水学报, 2007, 26(1): 1-4 |
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| 作者姓名： | 谢华 王康 张仁铎 唐友生 |
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| 作者单位： | 武汉大学,水利水电学院,水资源与水电工程国家重点实验室,湖北,武汉,430072;中山大学,环境科学与工程学院,广东,广州,510275 |
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| 基金项目： | 国家自然科学基金 , 湖北省自然科学基金 |
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| 摘 要： | 利用土壤染色示踪剂,对初始水头分别为1.25,2.5和5.0 cm三种情况下的实际入渗模式进行了全局性的观测。染色水流经过的区域被染色,通过照相记录染色分布获得实际流动模式,在此基础上,对水流运动的均匀性进行分析和评价。结果表明:即使在相对均匀的介质条件下,流动也表现出非均匀运动特性,入渗的均匀程度表现出随入渗水量的增加而增大的趋势,但过多的增加入渗水量,对于均匀程度的影响是有限的。
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| 关 键 词： | 染色示踪剂 入渗试验 流动模式 均匀性 |
| 文章编号： | 1000-646X(2007)01-0001-04 |
| 修稿时间： | 2006-06-27 |
Characterizing Uniformity of Soil Water Movement by Dye Infiltration Experiments |
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| XIE Hua,WANG Kang,ZHANG Ren-duo,TANG You-sheng. Characterizing Uniformity of Soil Water Movement by Dye Infiltration Experiments[J]. Journal of Irrigation and Drainage, 2007, 26(1): 1-4 |
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| Authors: | XIE Hua WANG Kang ZHANG Ren-duo TANG You-sheng |
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| Affiliation: | 1. State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan 430072, China; 2. School of Environment Science and Engineering, Sun Yat-sen (Zhongshan |
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| Abstract: | In this study,dye tracer was used to visualize soil water flow patterns.The field experiments of dye infiltration included three initial water ponding depths: 1.25,2.5 and 5.0 cm at the surface.Dye stained patterns was photographed and converted to binary images.Then the uniformity of soil water movement was evaluated.Results showed that heterogeneous flow patterns were observed in the relative homogeneous porous media.Although uniformity of the infiltration water distribution increased with ponding depths,uniformity of water distribution were only weakly increased with ponding infiltration depths. |
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| Keywords: | dye tracer infiltration experiments flow pattern uniformity |
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