均质土壤毛管水上升特性室内试验研究  

Laboratory experiment on characteristics of capillary water upward movement from homogeneous soil

作　　者：尹娟[1] 费良军[1] 程东娟[1] 

机构地区：[1]西安理工大学水资源研究所

出　　处：《农业工程学报》2007年第6期91-94,共4页Transactions of the Chinese Society of Agricultural Engineering

基　　金：国家自然科学基金资助项目(50579064;50179030);陕西省高校重点实验室重点科研项目(30JS041)

摘　　要：针对西北地区因过量灌溉而引起的土壤盐渍化问题,通过室内模拟土柱试验,对地下水埋深较浅(仅为地面以下70 cm)的均质土上升毛管水运动特性进行了研究,分析了毛管水上升高度、地下水毛管补给量与时间之间的关系,以及毛管水上升高度与地下水补给量之间的关系,探明了地下水毛管上升的运动机理。结果表明,均质土壤毛管水上升高度和地下水补给量与时间之间均为幂函数关系,毛管水上升高度与地下水毛管补给量之间呈明显的线性关系。Aiming at the problem that excessive water makes, soil salinize-alkalization in northwest areas, the characteristics of capillary water upward movement were studied in the homogeneous soil through indoor experiments of soil pillar under the condition that the buried depth of underwater was shallow （only 70 cm from surface）. The paper analyzed the relationship between height of upward capillary water and time and the relationship between height of upward capillary water and underwater replenishment. The mechanism of capillary water upward movement was proved. The results showed that there was an obvious linear function relationship between the height of upward capillary water and underwater replenishment and a non-linear power function relationship between them and time.

关 键 词：均质土 上升毛管水 毛管水上升运动特性 GREEN-AMPT模型 

分 类 号：S152.7[农业科学—土壤学]