基于DEM与Logistic函数的灌区渠系工作制度模拟：以周桥灌区为例
基于DEM与Logistic函数的灌区渠系工作制度模拟：以周桥灌区为例
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LIU, Yong , JIAO Xiyun , CHENG Minghan and Jiang, LI
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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Xinxiang City: Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
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【目的】以周桥灌区为例，针对自流灌区灌溉面积因水源水位变化而得不到保障的问题展开渠系工作制度模拟分析，以优化灌区渠系工作制度，提高该灌区自流灌溉面积。【方法】利用数字高程模型和Logistic函数建立周桥灌区的自灌率模型，将分条轮灌、分段轮灌、分片轮灌以及现行轮灌4种渠系工作制度代入该模型，结合输水损失、渠系水利用系数等指标进行比选。【结果】率定后的周桥灌区数字高程模型与实测数据的相关系数R达到0.96，MBE为0.27 m，可用于模拟灌区自灌率与渠首闸后水位的变化关系；各地块自灌率模型决定系数R2均达到0.74以上，相关性较高，运用Logistic函数建立的自灌率模型可行；利用该模型模拟4种典型渠系工作制度，发现分片轮灌自灌率达到97.11%，渠系水利用系数达到0.78，且输水损失仅为现行...
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基于DEM与Logistic函数的灌区渠系工作制度模拟：以周桥灌区为例
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TN_cdi_wanfang_journals_ggps202009015
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https://devfeature-collection.sl.nsw.gov.au/record/TN_cdi_wanfang_journals_ggps202009015
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1672-3317
DOI
10.13522/j.cnki.ggps.2019378
