To meet the design requirements of quality and construction schedule of Tuanhe aqueduct of South- to-North Wa-ter Diversion, the paper compares the construction schemes and technologies by two methods of full scaffold and aqueduct fabrica-tion machine according to engineering and structural properties of the aqueduct. With the tech-economic comparison from five aspects of construction quality, period, cost, safety and construction diversion, the optimized construction scheme by aqueduct fabrication machine with 40m width of span and 1600t weight is selected and successfully applied in engineering practice. The project was totally completed on September 28, 2013. The successful experience has significant promoting effect to the construc-tion equipment, technology and techniques of large-scale aqueducts in China.%为保证南水北调中线湍河渡槽的施工质量和工期满足设计要求，结合渡槽的工程特性及槽身结构特点，对槽身满堂支架法及造槽机法的施工方案及施工工艺进行了研究。经施工质量、工期、造价、安全、施工导流等方面的技术经济比较，优选出40 m跨1600 t重的造槽机施工方案，并成功应用于工程实践。工程于2013年9月28日完成全部施工，其成功经验，对我国大型渡槽施工设备、施工工艺、施工技术具有巨大推动作用。
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