冻融条件下田间入渗特性分析  

Analysis on characteristics of Fied Infiltration Under Freeze-thaw Condition

作　　者：何志萍[1] 周瑞清[1] 

机构地区：[1]水利部山西水利水电勘测设计研究院

出　　处：《山西水利科技》2002年第2期94-96,共3页Shanxi Hydrotechnics

摘　　要：非饱和土壤的水分入渗特性一直为农田水利学、土壤物理学、水资源评价与管理及其水文地质学等学者重视,冻土的入渗特性在水资源评价与管理和农田水利工作中尤其有着特殊的重要性,它是各种冬春灌溉灌水方法中确定灌水技术参数的主要依据。本文以大量大田非冻土、冻土系列入渗试验为依据,揭示冻土入渗率、入渗量随时间的变化过程及其规律。The field lnfiltration test under fieeze-thaw condition and analysis concerned are mtroduced in this paper.The test was done in Fenhe irrigation district,during winter or spring irrigation period,lasted two years.The analysis shows that KocTR KoB's formula I(t)=Atα(1932)is still suitable here,no matter whether it is for frozen soil or not .However,further studies considering the other factors are bound to be carried out in the furute.

关 键 词：冻土入渗 入渗量 入渗率 实用模型 

分 类 号：S275.3[农业科学—农业水土工程]