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| Analysis of infiltration characteristics of muddy water film hole irrigation under multiple factors |
| JIANG Ruirui, FEI Liangjun*, FU Yuliang, KANG Shouxuan, LIU Teng |
| Institute of Water Resource and Hydro-electric Engineering, Xi′an University of Technology, Xi′an, Shaanxi 710048, China |
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Abstract In order to study the single point source infiltration characteristics of muddy water film hole irrigation under multiple factors, the sensitivity of each factor was analyzed. This multifactor study mainly selected four factors such as soil bulk density, soil initial moisture content, membrane pore dia-meter and sediment concentration of muddy water as the influencing factors for indoor experiments. The orthogonal design was applied and the multiple regression analysis method of SPSS software was applied to regression analysis on the cumulative infiltration amount of the unit membrane pore area under the influence of four factors, and the fitting decision coefficient R=0.98 was fitted, which showed that all the influence factors affected the infiltration of the single point source of the muddy water film hole irrigation. The relative value method was used to analyze the influence degree of the infiltration parameters of each factor on the cumulative infiltration of the unit membrane pore, and the significant degree from large to small was the diameter of the membrane hole, the soil bulk density, the soil initial water content and the sediment concentration of the muddy water. The infiltration rate of irrigation point source was weaker.
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Received: 26 April 2018
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