摘要
将微咸水入渗后土壤结构改变对入渗的影响归结为概化饱和区导水率和湿润锋处的吸力随入渗水矿化度和钠吸附比的综合变化结果,并通过试验资料确立了试验区水质及土壤条件下饱和导水率和湿润锋处的吸力与入渗水矿化度及钠吸附比之间的函数关系,建立了融入水质因素的微咸水入渗条件下的Green-Apmt模型。为了验证所建立模型的准确性,采用另外两组实测资料对其进行验证,计算入渗率的误差分别为2.68%和0.72%,模型的计算精度较高。
The impact on the infiltration of soil structure changes after saline water infiltration was attributed the results which were caused by generalized saturated zone hydraulic conductivity and the suction at the wetting front comprehensive changes with salinity and sodium adsorp-tion ratio. The functional relationship between generalized saturated zone hydraulic conductivity and the suction at the wetting front and salini-ty and sodium adsorption ratio under the test area water quality and soil conditions was established by using experimental data. Green-Ampt model saline water infiltration integrated into water quality factors was established and verified. Two sets of data validation results show that the errors between the calculated infiltration rate and measured values are 2. 68% and 0. 72%. Validation results show high accuracy.
出处
《人民黄河》
CAS
北大核心
2015年第2期145-148,共4页
Yellow River
基金
国家自然科学基金资助项目(51209131)
山西省水利科学技术项目
山西省农业科技推广示范项目
