Effects of Sodium Polyacrylate on Water Infiltration into Soil

DONG Qin-ge; FENG Hao; ZHUANG Wen-hua

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Effects of Sodium Polyacrylate on Water Infiltration into Soil

- Effects of Sodium Polyacrylate on Water Infiltration into Soil
- Bulletin of Soiland Water Conservation Vol. 29, Issue 2, Pages: 164-168(2010)
- 作者机构：
  
  1. 中国科学院水利部水土保持研究所, 陕西杨凌,712100
  2. 中国科学院研究生院,北京,100049
  3. 西北农林科技大学水土保持研究所, 陕西杨凌,712100
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2010
- 稿件说明：
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DONG Qin-ge, FENG Hao, ZHUANG Wen-hua. Effects of Sodium Polyacrylate on Water Infiltration into Soil[J]. Bulletin of Soiland Water Conservation, 2010, 29(2): 164-168.
DOI：

DONG Qin-ge, FENG Hao, ZHUANG Wen-hua. Effects of Sodium Polyacrylate on Water Infiltration into Soil[J]. Bulletin of Soiland Water Conservation, 2010, 29(2): 164-168. DOI：

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)累积入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，随着入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入渗能力顺序为:壤土>砂土>黏土。3种土壤累积入渗能力都随着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%)，入渗能力都不同程度的降低，砂土累积入渗能力降低幅度最大。Horton模型对拟合各个处理的累积入渗过程效果最佳，Kostiakov模型和Philip模型拟合效果次之。

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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