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层状土垂直一维入渗土壤水分运动数值模拟与验证
引用本文:范严伟,黄宁,马孝义.层状土垂直一维入渗土壤水分运动数值模拟与验证[J].水土保持通报,2015,35(1):215-219.
作者姓名:范严伟  黄宁  马孝义
作者单位:兰州大学西部灾害与环境力学教育部重点实验室;兰州理工大学能源与动力工程学院;西北农林科技大学旱区农业水土工程教育部重点实验室
基金项目:国家重大研究计划重点支持项目“面向黑河水文模型集成的基于风吹雪动力学过程的积雪分布”(91325203);国家自然科学基金项目“基于风沙两相流的机械固沙措施防护机理及优化研究”(41371034);甘肃省自然科学资助项目(145RJYA293)
摘    要:目的]为进一步认识层状土垂直一维入渗土壤水分运动规律。方法]依据非饱和土壤水分运动理论,建立了垂直一维土壤饱和—非饱和水分运动的数学模型,并用SWMS-2D软件进行求解。采用已有文献资料,对均质土和层状土的土壤剖面含水率、土壤湿润锋运移值和累积入渗量及入渗速率等指标的实测值与模拟值进行分析验证。结果]实测值与模拟值具有较好的一致性,所提出的数学模型既适用于均质土壤,也适用于层状土壤。结论]所建模型能比较真实地反映均质土和层状土垂直一维入渗土壤水分运动的状况,证明利用SWMS-2D软件对层状土柱中土壤水分运动进行模拟具有可行性。

关 键 词:层状土壤  垂直一维入渗  土壤水分运动  数值模拟  SWMS-2D
收稿时间:2013/12/10 0:00:00
修稿时间:2014/1/21 0:00:00

Numerical Simulation and Verification of Layered Soil Water Movement in Vertical One-dimensional Infiltration
FAN Yanwei,HUANG Ning and MA Xiaoyi.Numerical Simulation and Verification of Layered Soil Water Movement in Vertical One-dimensional Infiltration[J].Bulletin of Soil and Water Conservation,2015,35(1):215-219.
Authors:FAN Yanwei  HUANG Ning and MA Xiaoyi
Institution:FAN Yanwei;HUANG Ning;MA Xiaoyi;Key Laboratory of Mechanics on Disaster and Environment in Western China,The Ministry of Education of China,Lanzhou University;College of Energy & Power Engineering,Lanzhou University of Technology;Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas,Northwest A & F University;
Abstract:Objective] To understand the soil water movement in vertical one-dimensional infiltration in layered soil.Methods] A mathematical model for soil saturated and unsaturated water movement in vertical one-dimensiona was established based on unsaturated soil water movement theory, and the SWMS-2D software was used to solve the model. Using the existing literature, the simulation results of homogeneous soil and layered soil were verified by the measured values of soil moisture content, soil wetting front, cumulative infiltration and infiltration rate in laboratory test.Results] The simulation result agreed well with measurement values, and the proposed numerical model is applicable to both homogeneous soil, and layered soil.Conclusion] The model can truly reflect soil water movement in vertical one-dimensional infiltration in homogeneous soil and layered soil. The SWMS-2D software can be used to simulate the soil water movement of vertical one-dimensional infiltration in layered soil.
Keywords:layered soil  vertical one-dimensional infiltration  soil water movement  numerical simulation  SWMS-2D
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