两域模型在原状土柱水盐运移模拟中的应用比较  

Comparison Application of Two-domain Model to Water and Solute Transport in Undisturbed Soil Column

作　　者：邵伟[1] 冯杰[2] 张小娜[1] 胡友兵[1] 

机构地区：[1]河海大学水文水资源学院,江苏南京210098 [2]中国水利水电科学研究院水资源所,北京100044

出　　处：《水电能源科学》2010年第12期13-15,12,共4页Water Resources and Power

基　　金：水利部社会公益性基金资助项目(200801033);中国水利水电科学研究院科研专项基金资助项目(资集1017);国家自然科学基金资助项目(50609005)

摘　　要：基于HYDRUS-1D、MACRO两域模型基本理论,通过回填土、原状土土柱试验确定了两模型参数,并采用数值软件模拟了高为40 cm、直径为19.8 cm的天然原状土柱中的水及溴离子的运移过程。结果表明,两域模型模拟富含大孔隙土柱中土壤含水量变化及底孔出流量准确,MACRO模型的模拟精度略高于HYDRUS模型。Based on the basic theory of two-domain model HYDRUS and MACRO,the parameters of two models are estimated by using backfill and undisturbed soil column experiments.And then the transport process of water and Br ion in undisturbed soil column with diameter of 19.8 cm and 40 cm in height are simulated by using numerical software.The results show that the bottom sluice outflow and soil moisture variations in large pore soil column are correctly simulated by two-domain model,and the accuracy of MACRO model is slightly better than that of HYDRUS model.

关 键 词：两域模型 大孔隙流 HYDRUS-1D MACRO 水盐运移 原状土柱试验 

分 类 号：S152.7[农业科学—土壤学]