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Position: Home > Articles > A Study on Hydraulic Performance of Microporous Concrete Seepage-pipe Water Saving Irrigation 2017 (12) 22-26+32

微孔混凝土渗水管道的水力性能研究

作  者：
王越帅;盛怀森;李先文;亓文明;李睿;李向明
关键词：
渗灌;微孔混凝土;渗水管道;水头损失;流量
摘  要：
基于水力性能优异的微孔混凝土渗水管道,提出了一种灌溉水输送和渗流同步进行的渗灌方式。以砂子和水泥为原料,采用干压法制备了长度为500 mm、外径为70 mm、内径为50 mm的微孔混凝土圆管,将圆管连接成长20 m的渗水管道,详细研究了渗水管道的水力性能。结果表明:微孔混凝土渗水管道的单位长度流量随系统水头的增大线性增大;系统水头变化对渗水管道前段水头影响较大,对渗水管道后段水头影响较小;渗水管道前段沿程水头减小速度较快,中段沿程水头减小速度逐渐变慢,后段沿程水头减小速度非常缓慢。该研究为微孔混凝土渗灌系统的构建和使用提供了依据。
译  名：
A Study on Hydraulic Performance of Microporous Concrete Seepage-pipe
作  者：
WANG Yue-shuai;SHENG Huai-sen;LI Xian-wen;QI Wen-ming;LI Rui;LI Xiang-ming;School of Environment and Materials Engineering,Yantai University;
关键词：
sub-irrigation;;microporous concrete;;seepage pipelines;;water head loss;;flow rate
摘  要：
On the basis of the microporous concrete seepage-pipe with excellent hydraulic performance,a seepage-irrigation mode,in which the irrigation water delivery and water seepage are conducted synchronously is proposed in this paper. With sand and cement as raw material,a kind of microporous concrete seepage pipe,with the length of 500 mm,the inner diameter of 50 mm and the external diameter of 70 mm,is made through dry pressing method. Then a 20 m seepage pipeline is connected to study the hydraulic performance of the seepage pipe. The results show that: the flow rate per unit length of the microporous concrete tubes increases linearly with the increase of the system water head;the system water head has great impacts on the water head at the front half part of the pipelines,while has little effect on the water head at the latter half part of the pipelines; the water head decreasing rate is fast in the front part of seepage pipelines,becomes slow in the middle part and very slow in the end part. The study results can provide valuable theoretical basis for scientific building and rational use of microporous concrete sub-irrigation system.

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