人民黄河
人民黃河
인민황하
Yellow River
2015年
2期
145-148
,共4页
微咸水%入渗%Green-Ampt模型%湿润锋
微鹹水%入滲%Green-Ampt模型%濕潤鋒
미함수%입삼%Green-Ampt모형%습윤봉
saline water%infiltration%Green-Ampt model%soil wetting front
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。
將微鹹水入滲後土壤結構改變對入滲的影響歸結為概化飽和區導水率和濕潤鋒處的吸力隨入滲水礦化度和鈉吸附比的綜閤變化結果，併通過試驗資料確立瞭試驗區水質及土壤條件下飽和導水率和濕潤鋒處的吸力與入滲水礦化度及鈉吸附比之間的函數關繫，建立瞭融入水質因素的微鹹水入滲條件下的Green－Apmt模型。為瞭驗證所建立模型的準確性，採用另外兩組實測資料對其進行驗證，計算入滲率的誤差分彆為2．68％和0．72％，模型的計算精度較高。
장미함수입삼후토양결구개변대입삼적영향귀결위개화포화구도수솔화습윤봉처적흡력수입삼수광화도화납흡부비적종합변화결과，병통과시험자료학립료시험구수질급토양조건하포화도수솔화습윤봉처적흡력여입삼수광화도급납흡부비지간적함수관계，건립료융입수질인소적미함수입삼조건하적Green－Apmt모형。위료험증소건립모형적준학성，채용령외량조실측자료대기진행험증，계산입삼솔적오차분별위2．68％화0．72％，모형적계산정도교고。
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.
