四种入渗模型在KCl溶液入渗的适应性  

Analysis of Different Infiltration Models under Conditions of Saline Water Infiltration

作　　者：林慧[1] 黄介生[1] 曾文治[1] 徐驰[1] 高鸿永 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [2]内蒙古河套灌区管理总局义长灌域管理局义长试验站,内蒙古五原015100

出　　处：《灌溉排水学报》2012年第6期49-51,共3页Journal of Irrigation and Drainage

基　　金：国家"十二五"科技支撑计划课题(2011BAD25B07);中央高校基本科研业务费专项资金项目(2012206020206)

摘　　要：为了探讨4种常规的入渗模型在含盐水入渗条件下的适用性,采用室内一维垂直土柱进行积水入渗实验,对比不同KCl质量浓度下的土壤入渗规律,并采用4种模型分别拟合土壤入渗率变化特征。结果表明,相同时间内的累积入渗量随KCl质量浓度的增加而增加,并且湿润锋的推进距离与累积入渗量之间具有较好的线性关系(R2>0.7)。Philip和Horton入渗模型的拟合效果要优于Green-Ampt模型和Kostiakov公式。For exploring the applicability of several infiltration models under the conditions of brackish water infiltration, one-dimensional vertical soil columns were used to do infiltration experiments. The results showed that, at the same infiltration time the cumulative infiltration increased with the increase of the salt content of infiltration water; furthermore there was a good linear relationship （R^2〉0.7）between the distance of wetting front and cumulative infiltration. In addition, the fitting effects of the Philip infiltration model and the Horton infiltration model were superior to the Green-Ampt model and Kostiakov formula respectively.

关 键 词：含盐水入渗 入渗模型 入渗特性 

分 类 号：S152.7[农业科学—土壤学]