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喀什河下游灌区位于伊犁河北岸,东起白石墩,西至霍城县惠远镇的沙尔布拉克沟,北连伊宁县、霍城县灌区,南临伊犁河。灌区包含伊宁市、霍城县、伊利县两县一市,灌区东西长90 km,南北平均宽18.50 km,总面积为1468.70 km~2。文章结合喀什河下游灌区改造工程实际情况,探讨了灌区改造工程横断面设计中的关键问题,包括渠道不冲不淤流速、水力最佳断面、实用经济断面的确定,以及渠道水力要素的计算,以期为类似工程提供借鉴。
The lower reaches of the Kashi River Irrigation District is located in the north shore of the Ili River, east of Whitehead, west Huocheng County Huiyuan Town Salbulakogou, north of Yining County, Huocheng County Irrigation District, south Ili River. The Irrigation District consists of two counties and one city of Yining, Huocheng and Erie counties. The Irrigation District has an east-west length of 90 km and an average width of north-south of 18.50 km with a total area of 1468.70 km ~ 2. In this paper, the key issues in the cross section design of the Irrigation District Reconstruction Project are discussed in the light of the actual situation of the Irrigation District Reconstruction Project in the lower Kashgar River. The key problems in the cross section design of the Irrigation District Reconstruction Project are discussed, including the non-irrigating and non-silting flow channels, the optimal hydraulic section, the practical economic section, With a view to provide reference for similar projects.