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| 考虑禁锢空气影响的层状土壤Green-Ampt入渗模型及试验验证 | |
| 引用本文： | 马 英,冯绍元,刘晓东,苏冬源. 考虑禁锢空气影响的层状土壤Green-Ampt入渗模型及试验验证[J]. 水利学报, 2011, 42(9): 1034-1043 |
| 作者姓名： | 马 英 冯绍元 刘晓东 苏冬源 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京100101／中国农业大学中国农业水问题研究中心,北京100083 2. 中国农业大学中国农业水问题研究中心,北京100083／扬州大学水利科学与工程学院,江苏扬州225009 3. 北京市海淀区水务局,北京,100089 4. 广西水利科学研究院,广西南宁,530023 |
| 基金项目： | 国家自然科学基金(50909094),国家自然科学基金重点项目(40830636); 水利部公益性行业科研专项(200801104); 北京市重点学科“水文学及水资源”建设项目 |
| 摘 要： | 为考虑土壤孔隙中禁锢空气对入渗水流的阻滞作用,引入饱和度系数Sa（Sa小于1）来量化湿润区的饱和程度,建立了改进的层状土壤Green-Ampt入渗模型（MGAM）,并提出了由土壤物理特性参数估算Sa的计算公式。为检验MGAM的适用性,分别在室内长土柱和田间进行层状土壤的积水入渗试验,并采用MGAM、传统的Green-A... |
| 关 键 词： | 入渗 改进Green-Ampt模型 层状土壤 禁锢空气 试验验证 |
A modified Green-Ampt model for water infiltration in layered soils with air entrapment and its experimental validation |
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| MA Ying,FENG Shao-yuan,LIU Xiao-dong and SU Dong-yuan. A modified Green-Ampt model for water infiltration in layered soils with air entrapment and its experimental validation[J]. Journal of Hydraulic Engineering, 2011, 42(9): 1034-1043 | |
| Authors: | MA Ying FENG Shao-yuan LIU Xiao-dong SU Dong-yuan |
| Affiliation: | MA Ying1,2,FENG Shao-yuan2,3,LIU Xiao-dong4,SU Dong-yuan5(1.Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China,2.China Agricultural University,Beijing 100083,3.Yangzhou University,Yangzhou 225009,4.Water Authority of Haidian District,Beijing 100089,5.Guangxi Institute of Water Resources Research,Nanning 530023,China) |
| Abstract: | A modified Green-Ampt model(MGAM) was proposed in this study to simulate water infiltration in layered soils with entrapped air.A saturation coefficient Sa(less than 1) was introduced in MGAM to account for the effect of air entrapment on infiltration.The Sa could be approximately determined from soil physical properties.Infiltration experiments in a laboratory layered soil column and field layered soil profile were conducted to test the applicability of MGAM.For comparison,the infiltration process was also... |
| Keywords: | water infiltration modified Green-Ampt model layered soils air entrapment experimental validation |
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