| 聚丙烯酸钠对土壤水分入渗影响的模拟研究 |
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| 引用本文： | 董勤各,冯浩,庄文化.聚丙烯酸钠对土壤水分入渗影响的模拟研究[J].水土保持通报,2010,30(2):164-168. |
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| 作者姓名： | 董勤各 冯浩 庄文化 |
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| 作者单位： | 1. 中国科学院,水利部水土保持研究所,陕西,杨凌712100;中国科学院,研究生院,北京,100049
2. 中国科学院,水利部水土保持研究所,陕西,杨凌712100;西北农林科技大学水土保持研究所,陕西,杨凌,712100 |
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| 基金项目： | "十一五"863计划课题，新世纪优秀人才支持计划 |
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| 摘 要： | 采用一维垂直积水入渗法,分析了聚丙烯酸钠(SA)4种浓度(0,0.08%,0.2%与0.5%)处理、不同质地土壤间(砂土、壤土和黏土)累积人渗能力差异性和不同入渗模型的拟合效果.研究结果表明,初始入渗阶段3种土壤累积入渗能力较强,累积入渗量增加很快,随着人渗过程的进行累积入渗量曲线上升趋势变缓;3种土壤对照处理的累积人渗能力顺序为:壤土>砂土>黏土.3种土壤累积人渗能力都随着SA浓度的加大而减弱;随着聚丙烯酸钠浓度的增大(0.08%～0.5%),人渗能力都不同程度的降低,砂土累积人渗能力降低幅度最大.Horton模型对拟合各个处理的累积人渗过程效果最佳,Kostiakov模型和Philip模型拟合效果次之.
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| 关 键 词： | 聚丙烯酸钠 土壤水分入渗 模型模拟 |
| 收稿时间： | 2009/6/21 0:00:00 |
| 修稿时间： | 2009/11/24 0:00:00 |
Effects of Sodium Polyacrylate on Water Infiltration into Soil |
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| DONG Qin-ge,FENG Hao and ZHUANG Wen-hua.Effects of Sodium Polyacrylate on Water Infiltration into Soil[J].Bulletin of Soil and Water Conservation,2010,30(2):164-168. |
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| Authors: | DONG Qin-ge FENG Hao and ZHUANG Wen-hua |
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| Institution: | Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Graduate School of the Chinese Academy of Sciences,Beijing 100049,China;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Northwest A & F University,Yangling,Shaanxi 712100,China;Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Yangling,Shaanxi 712100,China;Graduate School of the Chinese Academy of Sciences,Beijing 100049,China |
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| Abstract: | Based on the experiment of one-dimensional vertical infiltration in laboratory,the effects of sodium polyacrylate (SA) on infiltration capacity into sand,loam,and clay soils and the fitting effect of different infiltration models are studied. Four concentrations of the SA (0 ,0.08 % ,0.2 % ,and 0.5%) were added to these three soils. Results showed that the initiation infiltration capacity of the three soils was the highest. The curve of cumulative infiltration volume went up quickly and then the upward trend went down with the process of infiltration. For the three types of soil without SA,the order of soils was loess soilsand soilLou soil,by the cumulative infiltration capacity. The concentration of SA was controlled in the range from 0.08 % to 0.5 % by weight. The infiltration capacity of these soils significantly decreased with the increasing of SA. The infiltration capacity of sand soil was affected most obviously by the concentration of SA. Based on the study,water infiltration into soil can be simulated well by Horton infiltration model and the fitting effect of Horton model is better than that of Kostiakov and Philip models. |
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| Keywords: | sodium polyacrylate water infiltration model simulation |
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