本文通过对南疆地区老灌区某渠道改建工程中设计规模推求的论述,介绍了老灌区内分水口较多干渠的改造设计规模论证的过程,提出了干渠分段续灌、分段内分水闸口轮灌的计算方法,以推求干渠的渠道规模及分水闸口的建设规模;希望通过本文对类似的工程有参考意义。 This article discusses the design scale of some irrigation channels in the old irrigated area in southern Xinjiang, introduces the process of the demonstration of the transformation of the design of more irrigation channels in the old irrigated area, The calculation method of gate irrigation, in order to deduce the channel size of the main canal and the construction scale of the sub-sluice gate; I hope this paper has reference significance for similar projects.