التفاصيل البيبلوغرافية
| العنوان: |
明渠非标准断面法测流水位流量关系的 率定及影响因素分析. (Chinese) |
| Alternate Title: |
Calibration and influencing factors analysis of stage-discharge relation of non-standard section method in open channels. (English) |
| المؤلفون: |
梁慧真, 宗全利, 刘贞姬, 谢炎, 刘冬冬 |
| المصدر: |
Journal of Drainage & Irrigation Machinery Engineering / Paiguan Jixie Gongcheng Xuebao; Feb2024, Vol. 42 Issue 2, p147-160, 8p |
| Abstract (English): |
In order to explore the calibration problem of the stage-discharge relation curve for open channel non-standard section flow measurement, 25 channel water measurement sections in a regiment field of the Third Division of Xinjiang were taken as the research object, and the stage-discharge relation was calibrated using a FlowTracker 2 handheld acoustic Doppler current meter. Based on the actual measurement results, the stage-discharge relation curves of each channel water-measuring section were calibrated, and the calculated curves were subjected to sign inspection, line fitting testing, deviation numerical testing, and error analysis. On this basis, the flow rate was simulated, and the influencing factors of the combined flow fitting parameters were analyzed. The results show that among the 25 calibrated channel water measurement sections, 14 sections have stable stage-discharge relations, 5 sections are affected by backwater, and 6 sections are affected by channel siltation and have unstable stage-discharge relations. Under the same conditions of channel roughness coefficient n, slope coefficient m and slope i, the flow fitting parameters generally correlates positively with the channel bottom width b. Under the same conditions of channel roughness coefficient n, slope coefficient m, and bottom width b, the flow fitting parameters generally correlates negatively with the channel slope i. The research results can provide a reference basis for checking the flow measurement accuracy of automatic water-measuring equipment in irrigation areas. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为探究明渠非标准断面法测流的水位流量关系曲线的率定问题，以新疆第三师某团场25处渠道量水断面为研究对象，利用FlowTracker 2手持式声学多普勒流速仪进行了水位流量关系率定工作.根据实测结果，率定了各渠道量水断面的水位流量关系曲线，并对所率定出的曲线进行了符号检验、适线检验和偏离数值检验及误差分析，在此基础上，对流量拟合参数的影响因素进行了分析.结果表明：所率定的25处渠道量水断面中，14处具有稳定的水位流量关系，5处受回水影响、6处受渠道淤积影响为不稳定的水位流量关系；在渠道粗糙系数Ra、边坡系数m及坡降i相同的条件下，流量拟合参数与渠道底宽b总体上呈正相关；在渠道粗糙系数Ra、边坡系数m及底宽b相同的条件下，流量拟合参数与渠道坡降i总体上呈负相关.研究结果可以为灌区自动化量水设备测流准确性的校核提供参考依据. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
