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左排倒虹吸是南水北调中线总干渠一期工程中河穿渠的大型交叉建筑物,按照南水北调中线总干渠工程总体设计,左排倒虹吸的设计洪水标准为50年一遇,校核洪水标准为200年一遇,常遇洪水标准为10年一遇。根据左排倒虹吸工程的运行特性,设计中对遇到的一些问题进行分析探讨,并进行了模型试验研究,认为左排倒虹吸工程布置中需要解决以下几个重点问题。
The left-hand inverted siphon is a large-scale cross-river building in the first phase of the Middle Route of the South-to-North Water Diversion Project. According to the overall design of the main canal project of the midline of the South-to-North Water Diversion Project, the design flood standard of the left- Once in 200 years, the flood often meets the standard of 10 years. According to the operating characteristics of the left-row inverted siphon project, some problems encountered in the design are analyzed and discussed, and the model test is conducted. It is considered that the following key issues need to be solved in the layout of the left-row inverted siphon project.