| 引用本文: | 李月霞,马素英,范雷雷,等.河北省灌溉机井水电转换系数影响因素分析[J].灌溉排水学报,0,():-. |
| LI Yuexia,MA Suying,FAN Leilei,et al.河北省灌溉机井水电转换系数影响因素分析[J].灌溉排水学报,0,():-. |
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| 河北省灌溉机井水电转换系数影响因素分析 |
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李月霞1,2, 马素英1,2, 范雷雷1,2, 哈建强3, 张志悦3
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1.河北省水利科学研究院 石家庄,;2.河北省农业节水技术创新中心 石家庄;3.河北省沧州水文勘测研究中心
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| 摘要: |
| 【目的】“以电折水”是河北省计量农业地下水开采量的主要管理措施,科学利用机井水电转换系数并分析其变化规律对于优化水资源配置、节约能源、提高效率等具有重要意义。【方法】依据河北省沧县境内177眼农用灌溉机井相关监测资料,对影响机井水电转换系数的地下水位埋深、水泵效率、管道压力、输水管道长度等因素进行单因素分析并建立回归模型,同时采用通径分析法筛选出主要因素,并对其进行精度验证。【结果】机井水电转换系数受地下水位埋深影响程度较大,通径系数为-0.882,水泵效率和管道输水长度,其通径系数均较小,对水电转换系数的改变影响较小,(管道压力在模型通径分析过程中已剔除)。【结论】不同地下水位埋深下的浅层井和深层井出水量计算值与实测值拟合结果较好,浅井拟合精度高于深井,R2分别为0.88和0.85。研究成果对于加快“以电折水”计量管理措施的推广具有重要现实意义。 |
| 关键词: 灌溉机井;水电转化系数;回归模型;通径分析;拟合精度 |
| DOI： |
| 分类号:S275 |
| 基金项目:国家重点研发计划课题(2016YFC0401408)；河北省水利科研和推广计划项目(2018-7) |
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| Analysis on Influencing Factors of Hydroelectric Conversion Coefficient of Irrigation Machine Wells in Hebei Province |
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LI Yuexia1,2, MA Suying1,2, FAN Leilei1,2, HA Jianqiang3, ZHANG Zhiyue3
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1.Hebei Water Conservancy Research Institute,Hebei,Shijiazhuang,;2.Hebei Agricultural Water Saving Technology Innovation Center,Hebei,Shijiazhuang;3.Hebei Cangzhou hydrological survey and Research Center,Hebei,Cangzhou
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| Abstract: |
| 【Background】 groundwater extraction in Hebei Province.【Objective】Scientifically utilizing the hydroelectric conversion coefficient of machine-driven wells and analyzing its variation laws are of great significance for optimizing water resources allocation, saving energy, and improving efficiency.【Method】Based on the relevant monitoring data of 177 agricultural irrigation wells in Cang County, Hebei Province, the factors such as groundwater depth, pump efficiency, pipeline pressure, and water pipeline length that affect the hydroelectric conversion coefficient of the wells were analyzed by single factor, and a regression model was established. The main factors were screened out by the path analysis method, and their accuracy was verified.【Result】The hydroelectric conversion coefficient of the motor-driven well is greatly affected by the buried depth of the groundwater level, and the path coefficient is -0.882. (Pipeline pressure has been eliminated in the model path analysis process).【Conclusion】The calculated and measured water yields of shallow wells and deep wells under different groundwater depths are well fitted, and the fitting accuracy of shallow wells is higher than that of deep wells, and R2 is 0.88 and 0.85. The research results have important practical significance for speeding up the promotion of "electricity to water" metering management measures. |
| Key words: Irrigation Well;Hydropower Conversion Coefficient;Regression Model;Path Analysis;Fitting Accuracy |
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