| 引用本文: | 薛天柱,王茹雪,白 晶.渠道水利用系数经验公式改进研究[J].灌溉排水学报,2023,42(S1):156-159. |
| XUE Tianzhu,WANG Ruxue,BAI Jing.渠道水利用系数经验公式改进研究[J].灌溉排水学报,2023,42(S1):156-159. |
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| 摘要: |
| 分析渠道长度与渠道水利用系数的关系，发现考斯加科夫公式存在明显的缺陷。对于一条均质渠道，渠道全段水利用系数应该等于分段水利用系数的乘积，考斯加科夫公式计算结果表明二者并不相等。针对这一情况，本文讨论了渠道水利用系数和渠道长度的关系，推导出新的计算公式，并将其应用于固海扬水工程设计。实践表明改进公式物理意义明确、计算成果精确，具有一定的实用价值. |
| 关键词: 渠道水利用系数；考斯加科夫公式；每千米输水损失率；固海扬水工程 |
| DOI：10.13522/j.cnki.ggps. 2023461 |
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| Study on Improvement of Empirical Formula of Channel Water Use Coefficient |
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XUE Tianzhu, WANG Ruxue, BAI Jing
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Ningxia Water Conservancy and Hydropower Surveying and Design Research Institute Co., Ltd., Yinchuan 750004, China
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| Abstract: |
| By analyzing the relationship between channel length and channel water use coefficient, it is found that the Kostiakov formula has obvious theoretical defects: for a homogeneous channel, the water use coefficient of the whole channel should be equal to the product of the water use coefficient of the section, but the results showed that they two were not equal. In view of this paper, we discussed the relationship between channel water use coefficient and channel length, deduced a new calculation formula, and applied it to the design of Guhai pumping project. The practice showed that the physical meaning of the improved formula is clear, the calculation results were accurate, and it had certain practical value. |
| Key words: channel water use coefficient; the Kostiakov formula; rate of loss of water per kilometer; Guhai pumping project |
