摘要
给水度μ值乃是地下水计算和水资源评价中一个十分重要的常用参数, 它的正确取值一直在被研究,本文介绍了作者通过在黄土地区开展实地测试获得的有关最新成果, 介绍了利用中子水分仪等设备, 揭示的含水层释水过程和给水度变化过程, 剖析了该过程的内在机理, 发现了过程给水度μt 值与时间呈双曲线变化的规律, 进而推出了反映该规律的相应公式. 在测得含水率变化的基础上,
In this paper,the field experiment result using neutron moisture meter in loess area is presented.The process of water release and variation of specific yield in aquifer are described.The inherent mechanism in the process is analyzed.The relationship between time\|dependent specific yield and time history is found to be a hyperbola and accordingly an empirical formula is derived.Using this formula,the rational specific yield can be determined based on the variation of measured soil moisture content.
出处
《水利学报》
EI
CSCD
北大核心
1999年第11期38-41,共4页
Journal of Hydraulic Engineering
基金
高等学校博士学科点专项科研基金
关键词
给水度
含水层
释水机理
黄土
specific yield, aquifer, water release mechanism.