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bu wen ding da xi shen liu shi yan yi ge xin de jiao xue shi yan
Author(s): 
Pages: 47-48
Year: Issue:  1
Journal: Hydrogeology and Engineering Geology

Keyword:  达西定律达西渗流层流状态粘滞力不稳定渗流实验条件水力梯度半对数地下水运动基本规律;
Abstract: <正> (一)问题提出 达西定律是描写由粘滞力控制(通常以雷诺数小于10为标志)的层流状态下地下水运动的基本规律。该定律由达西(Henri Darcy)在1856年创立的。他在装满均质砂土的圆柱筒中,保持稳定水头的条件下做了大量实验而得到渗流量(Q)、水力梯度(J)、过水断面(ω)三者之间的关系,可用公式
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