Improving the carrying capacity of irrigation canals: Al-Tawfiky diversion

Mohamed S. Abdelmoaty

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Improving the carrying capacity of irrigation canals: Al-Tawfiky diversion

机译：提高灌溉运河的承载能力：Al-Tawfiky转移

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The morphological changes in the irrigation channel cross-section affect its hydraulic efficiency and carrying capacity with time. Periodic maintenance activities are applied to reach maximum carrying capacity. In many cases, removing the total amount of deposit inside canal cross-section above the design bed level is not the optimum maintenance solution hydraulically and economically. Additional discharge must be applied to canal intake to achieve the design water level. Al-Tawfiky Diversion is one of the main irrigation canals in the Delta region. It extended with a length of 175 km to serve 716,540 feddan. The study encloses the first reach from intake to km 36.400 upstream Jamjara regulator. This research aims to detect the most inefficient reaches along the selected study canal reach based on the actual characteristics of the surveyed canal cross-sections, and identifying the most proper maintenance scenario hydraulically and economically. Three hundred and fifty-one cross-sections along the study reach were surveyed. The different hydraulic parameters of these cross-sections were calculated. The data was analyzed and criterion for detecting the most inefficient sub-reaches was introduced. An empirical equation connecting the applied maintenance activities with channel conveyance was deduced. A mathematical model for the study reach was built and calibrated using (SOBEK-1D) to evaluate the proposed four maintenance scenarios.

机译：灌溉通道横截面的形态变化会影响其液压效率和随时间承载能力。定期维护活动适用于达到最大承载力。在许多情况下，去除在设计床等级上方的管道横截面内的沉积物总量不是液压和经济上的最佳维护解决方案。额外放电必须应用于运河摄入量以实现设计水位。 Al-Tawfiky转移是三角洲地区的主要灌溉运河之一。它延伸，长度为175公里，服务于716,540份Feddan。该研究用Intrake到KM 36.400上游Jamjara调节器附带了第一个到达。本研究旨在基于所选运河横截面的实际特征，检测所选研究运河沿着所选研究运河的最低效率，并识别液压和经济上最适当的维护方案。调查了沿着研究达到的三百五十一条横截面。计算这些横截面的不同液压参数。分析了数据，介绍了检测最低效率下降的标准。推导了连接应用维护活动的经验方程。使用（Sobek-1D）建立和校准了研究范围的数学模型，以评估所提出的四种维护方案。

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《Water Science》 |2021年第1期|共11页
作者
Mohamed S. Abdelmoaty;
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中图分类水文科学（水界物理学）;
关键词
Open channels conveyancemorphological changeshydraulic efficiencySOBEK-1D;

机译：开放渠道Encortancormophology Venteshydraulic EfficiencySobek-1D;

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Improving the carrying capacity of irrigation canals: Al-Tawfiky diversion

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