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| Abstract: |
| To improve the utilization efficiency of water, the laying length of porous tubes was analyzed. Considering long porous tubes, the irrigation uniformity of porous tubes was studied by analyzing the deviation rate of the working head of porous tubes and through an impact analysis of the deviation ratio of flow rate based on laying length, slope, pressure head, and perforation spacing. Results showed that the deviation ratio of the flow rate could be reduced by decreasing the length of tubes and increasing the slope. The deviation ratio of flow rate was less influenced by pressure head and perforation spacing. A best-laid slope resulted in a longer laying length of the porous tubes, and they were not constant. |
| Key words: flow deviation rate porous tubes deviation rate of working head laying length head loss |
| DOI：10.11916/j.issn.1005-9113.17147 |
| Clc Number:TV732.4+1 |
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| Descriptions in Chinese: |
| 多孔流体分布管铺设长度与流量偏差率的关系研究 王亚朦，刘焕芳 （石河子大学 水利建筑工程学院，新疆 石河子市 832000） 摘要：对多孔流体分布管铺设长度的研究可以提高实际工程中水的利用效率。为了研究多孔流体分布管出流均匀度的变化规律，在多孔流体分布管为长管的条件下，通过对多孔流体分布管工作水头偏差率的分析及铺设长度、铺设坡度、压力水头、滴孔间距对多孔流体分布管流量偏差率的影响分析。结果表明：减小铺设长度、适当增加铺设坡度有助于减小流量偏差率；压力水头和滴孔间距则对流量偏差率的影响不大；存在一个最佳铺设坡度，使得多孔流体分布管取得最大铺设长度；最佳铺设坡度与铺设长度不是定值。 关键词：流量偏差率；多孔流体分布管；工作水头偏差率；铺设长度；压力水头 |
