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di xia ya li shen guan de shui li xue yan jiu
Author(s): 
Pages: 6
Year: Issue:  2
Journal: Water Saving Irrigation

Keyword:  渗灌管试验研究毛管水头损失摩阻系数形变地下压力实验室水力学研究实测值;
Abstract: <正> 本文论述了压力渗灌毛管形变的水力学问题的实验室试验研究。试验研究使用了4种渗灌管:两种是双腔室孔口式渗头毛管;另两种是单腔式毛管式渗头毛管。渗灌毛管长度为30m,压力均匀。试验表明,渗灌毛管的水头损失和流量的实测值与用含布拉修斯摩阻系数的达西—韦斯巴赫公式预测的数值完全相符。由于土壤压力使渗灌毛管发生形变,在主
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