平原区饱和—非饱和土壤水运动模型及数值算法研究  

Study on Flow Model and Numerical Simulation of Unsaturated and Saturated Soil Water in Plain Area

作　　者：陈景波[1] 王船海[1] 杜世鹏 杨海[1] 张梦菲[1] 朱立国[3] 

机构地区：[1]河海大学水文水资源与水利工程科学国家重点实验室,江苏南京210098 [2]浙江省水利水电勘测设计院,浙江杭州310002 [3]江苏省水文水资源勘测局无锡分局,江苏无锡214000

出　　处：《水力发电》2016年第9期13-16,49,共5页Water Power

基　　金：江苏省水利科技项目(2015007);国家水体污染控制与治理科技重大专项(2014ZX07101-011)

摘　　要：以土壤水运动理论为基础,构建了研究区三维饱和-非饱和土壤水运动模型,通过网格剖分模拟研究区各个位置土壤的体积含水率以及变换过程,并采用多个算例验证模型的稳定性和准确性。计算结果可知,土壤水分及地下水水位变化过程符合土壤水运动原理和日常经验,重现了特定土壤水运动的基本过程,为探究平原区水循环过程、水分转化关系以及进行大尺度平原区水文预报提供理论基础。Based on the theory of soil water movement, a 3D model is constructed to simulate the movement of unsaturated and saturated water in plain area. The finite difference method is used to simulate soil moisture content and transformation process in each location of study area. Some case examples are used to verify the stability and accuracy of model. The calculation results show that the process of soil water moisture and groundwater level change is reasonable in theory, the simulation results of actual soil water situation is relatively reasonable, which can reflect the hydrological cycle in plain area. The results provide theoretical basis for exploring water cycle process, water transformation relationship and large-scale hydrological forecasting in plain area.

关 键 词：土壤水 水循环 饱和-非饱和流 数值模拟 

分 类 号：S152.7[农业科学—土壤学] S152.253[农业科学—农业基础科学]