人民黄河2024，Vol.46Issue(7)：138-142,5.DOI:10.3969/j.issn.1000-1379.2024.07.023
基于HYDRUS-1D模型的黄土积雨入渗数值模拟研究
Numerical Simulation Study on Loess Rainfall Infiltration Based on HYDRUS-1D Model
摘要
Abstract
In order to study the infiltration law of loess water under rainfall conditions,an indoor loess soil column rainfall infiltration test was set up.The HYDRUS-1D model was used to simulate the infiltration law of rainfall,and the simulation accuracy was evaluated by using Root Mean Square Error(SRME)and Nash-Sutcliffe Efficiency Coefficient(SNE).The sensitivity of soil moisture characteristic parameters was ana-lyzed using the single factor disturbance method.The results show that the simulated soil moisture content values have a consistent trend with the measured experimental values,with very small errors.The SRME ranges from 0.011 to 0.017.Except for the SNE value corresponding to a soil column depth of 20 cm,which is less than 0.900,all other SNE values are greater than 0.900,indicating a good simulation effect.The ranking of the impact of soil moisture characteristic parameters on simulation results is θs＞ks＞n＞α＞θr.The disturbance of θs and α is nega-tively correlated with the simulation results,the disturbance of ks,n and θr is positively correlated with the simulation results.The infiltration pattern of shallow soil rainfall is less affected by parameter disturbances.As the depth of the soil column increases,the sensitivity of the pa-rameters gradually increases,and the impact of parameter changes on the simulation results gradually increases.关键词
黄土/积雨/数值模拟/入渗规律/参数敏感性Key words
loess/accumulated rain/numerical simulation/infiltration pattern/parameter sensitivity分类
建筑与水利引用本文复制引用
雷磊,王晓东,郑树海,梁俊,张晋,段璟靓,杨貌,田堪良..基于HYDRUS-1D模型的黄土积雨入渗数值模拟研究[J].人民黄河,2024,46(7):138-142,5.基金项目
国家重点研发计划项目(2017YFC0504703) （2017YFC0504703）
国网陕西省电力有限公司科技项目(5226KY22000K) （5226KY22000K）
陕西中试电力科技有限公司科技项目(SGTYHT/21-JS-226) （SGTYHT/21-JS-226）
国网(西安)环保技术中心有限公司科技项目(SGTYHT/21-JS-226) （西安）
