浑水膜孔灌入渗影响因素  

Influence factors of muddy water film hole irrigation infiltration

作　　者：钟韵[1] 费良军[1] 傅渝亮[1] 金世杰[1] 王锦辉 

机构地区：[1]西安理工大学水资源研究所,陕西西安710048 [2]西北综合勘察设计研究院,陕西西安710003

出　　处：《排灌机械工程学报》2017年第2期178-184,共7页Journal of Drainage and Irrigation Machinery Engineering

基　　金：国家自然科学基金资助项目(51479161;51279157);公益性行业科研专项资助项目(201203003)

摘　　要：为了揭示浑水入渗与清水入渗的差异,通过大量浑水膜孔灌自由入渗试验资料,分析了影响浑水膜孔灌自由入渗能力的因素,研究了泥沙粒度组成、膜孔直径、土壤容重和土壤初始含水量对浑水膜孔灌自由入渗能力的影响,结果表明各因素对膜孔灌自由入渗能力均有显著的影响,提出了各影响因素与浑水膜孔灌入渗能力之间的关系,建立了泥沙粒度组成、膜孔直径、土壤容重以及土壤初始含水量的浑水膜孔灌自由入渗单位膜孔面积累积入渗量和稳定入渗率模型,其相关系数均大于0.960 0,根据入渗时间利用这些模型可求得相应的累积入渗量、稳定入渗率,从而进一步判断浑水膜孔灌土壤的自由入渗能力.结论可为更深入地研究浑水膜孔灌自由入渗规律和浑水膜孔灌技术提供参考.In order to reveal the difference of muddy water infiltration and clean water infiltration, through the test data of free infiltration of muddy water film hole irrigation, analyzing the influence of free water infiltration capacity of muddy water film hole irrigation, such as clay and sand grade, size of film hole, soil bulk density and initial soil water content were researched. The results show that various factors all have a significant impact on the film hole irrigation free infiltration capacity, putting forward the relationship between the influence factors and the infiltration capacity of muddy water film hole irri- gation. The model of clay and sand grade, size of film hole, soil bulk density and cumulative infiltration volume per unit film hole area of free infiltration of muddy water film hole irrigation of initial soil water content and steady infiltration rate was established. Moreover its correlation coefficient is greater than 0. 960 0. Based on the model, the cumulative infiltration volume per unit film hole area and steady in- filtration rate can be obtained, further judging the free infiltration capacity in soil under muddy water film hole irrigation. The results could provide a reference for further studies of muddy water film holeirrigation free infiltration law and technology.

关 键 词：膜孔灌 浑水入渗 泥沙粒度组成 稳定入渗率 单点源入渗 

分 类 号：S275.3[农业科学—农业水土工程]