| Study on the infiltration model and factors affecting the parameters of stony-soil |
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| DOI：10.7606/j.issn.1000-7601.2010.01.02 |
| Key Words: stony-soil media rock fragment content water movement parameters water movement model applicability of the model |
| Author Name | Affiliation | | YANG Yanfen | Water Resources Institute, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | WANG Quanjiu | Water Resources Institute, Xi'an University of Technology, Xi'an, Shaanxi 710048, China
State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Northwest A & F University, Yangling, Shanxi 712100, China | | ZENG Chen | State Key Laboratory of Soil Erosion and Dry Land Farming on the Loess Plateau, Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Northwest A & F University, Yangling, Shanxi 712100, China | | LIU Jianjun | Water Resources Institute, Xi'an University of Technology, Xi'an, Shaanxi 710048, China | | LI Tao | Water Resources Institute, Xi'an University of Technology, Xi'an, Shaanxi 710048, China |
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| Abstract: |
| Four kinds of rock fragment content and five kinds of particle size were chosen and pure soil was used as control, and 20 groups of one dimensional vertical ponding infiltration experiments and 20 groups of measured saturated hydraulic conductivity experiments were conducted to analyze the effect of rock fragment content on water movement parameters of stony-soil media and the applicability of water movement model. The major findings are as follows: some parameters in Green-Ampt formula, Philip formula and one dimensional vertical algebraic model decrease with the increase of rock fragment content at first, and then increase, and decrease again at last. The applicability of the model is different from rock fragment particle size. When the particle size is between 0.5～3 cm, one dimensional vertical algebraic model could describe with relative accuracy of the saturated hydraulic conductivity of stony-soil media, and the saturated hydraulic conductivity of stony-soil media described by Green-Ampt formula has higher precision when the particle size is 3～5 cm. |
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