微咸水入渗条件下的一维代数模型研究  

One Dimensional Algebraic Model for Saline Water Infiltration

作　　者：毕远杰 BI Yuan-jie(Shanxi Institute of Water Resources and Hydropower Research, 03000)

机构地区：[1]山西省水利水电科学研究院,太原030002

出　　处：《节水灌溉》2018年第6期106-110,共5页Water Saving Irrigation

基　　金：国家自然科学基金项目(51209131);山西省水利科学技术研究与推广项目

摘　　要：入渗水水质是土壤水分入渗过程的主要影响因素之一,将入渗水水质因素融入淡水入渗模型,可改善其对微咸水入渗过程的描述和计算精度。首先采用淡水条件下的一维代数模型模拟微咸水入渗土壤含水率分布,在对模拟结果对比分析的基础上,将微咸水水质对水分入渗特性的影响归结为土壤孔隙率发生改变的结果,从而建立了微咸水入渗条件下的一维代数模型,验证结果表明模型的计算精度较高。改进模型便于描述微咸水灌溉条件下的土壤水分运动,为在实际生产中预测预报土壤水分特征提供了新的方法。Infiltration water quality is one of the main factors of soil water infiltration process,which is also the key to improve the calculation accuracy of using freshwater infiltration model to simulate saline water infiltration. In this paper,one dimensional algebraic model is used to simulate soil moisture distribution of saline water infiltration. Based on the comparative analysis of simulation results,one dimensional algebraic model of freshwater infiltration is modified. The impact on the infiltration of soil water infiltration characteristics after saline water infiltration is attributed to the results of soil porosity changes,and the one dimensional algebraic model saline water infiltration is established and verified. The validation results show high accuracy. The model facilitates describing soil water movement under saline water irrigation,which provides a new approach for forecasting predict soil moisture characteristics of saline water irrigation.

关 键 词：微咸水 入渗 一维代数模型 土壤孔隙率 

分 类 号：TV93[水利工程—水利水电工程] S27[农业科学—农业水土工程]