排灌机械工程学报
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Journal of Drainage and Irrigation Machinery Engin  2019, Vol. 37 Issue (4): 352-357    DOI: 10.3969/j.issn.1674-8530.17.0208
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Three-dimensional Green-Ampt infiltration model of muddy water with different sediment concentration under film hole irrigation
CHEN Lin1, FEI Liangjun1*, JIN Shijie1, WANG Zilu2, ZHONG Yun1
1. Institute of Water Resources and Hydro-electric Engineering, Xi′an University of Technology, Xi′an, Shaanxi 710048, China; 2. Yellow River Institute of Hydraulic Research, Zhengzhou, Henan 450003, China
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Abstract The indoor muddy water film hole infiltration test was made and based on the threedimensional Green-Ampt model to establish the relevant physical model to study influence of sediment concentration on free infiltration under muddy water film hole irrigation. The effect of sediment concentration on free infiltration under muddy water film hole irrigation was generalized as infiltration reduction force on the water and soil interface settlement layer. And based on film hole irrigation with clear water, the changing law of the infiltration reduction force on the water and soil interface settlement layer with time was obtained. The results showed that the infiltration reduction force increased with sediment concentration increment. The higher the sediment concentration was, the more obvious the effect about infiltration reduction force was. There was a good power function relationship between the same sediment concentration and the time. The maximum value of reduction force appeared at the initial stage of infiltration. In the first 30 minutes, the reduction force was significantly higher. After 30 minutes, the change trend of reduction force decreased gradually. After 100 minutes, the change trend of reduction force became the steady state. These results lay the foundation for the subsequent study on the free infiltration of muddy film hole irrigation, and are of important scientific value to the development and practical application of irrigation theory.
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CHEN Lin-
FEI Liang-Jun-*
JIN Shi-Jie-
WANG Zi-Lu-
ZHONG Yun-
Key wordsmuddy water film hole irrigation   3dimensional Green-Ampt infiltration model   muddy water sediment concentration   soil water suction   infiltration reduction force     
Received: 2017-09-07;
Cite this article:   
CHEN Lin-,FEI Liang-Jun-*,JIN Shi-Jie- et al. Three-dimensional Green-Ampt infiltration model of muddy water with different sediment concentration under film hole irrigation[J]. Journal of Drainage and Irrigation Machinery Engin, 2019, 37(4): 352-357.
 
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[1] CHEN Lin, FEI Liangjun, WANG ZiLu, GUO Xin, ZENG Jian, YANG yang. Single-point free infiltration characteristics of muddy water film hole irrigation with γ-PGA additive[J]. Journal of Drainage and Irrigation Machinery Engin, 2018, 36(6): 529-535.
[2] HU Jianqiao,, WANG Jinghui, ZHANG Jiangxiang, CHENG Ziyong. Experimental study on free infiltration characteristics of muddy water film hole irrigation[J]. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(1): 80-86.

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