倒虹吸是南水北调配套工程中较为常见的水工建筑物,主要工序为:导流及围堰施工、施工降排水、土方开挖、钢管安装及焊缝焊接、倒虹吸外包钢筋混凝土施工、配套阀井工程施工、土方回填。以上既是主要施工工序,也是质量控制要点。配套工程穿河倒虹吸作为重要隐蔽工程,科学组织编写其施工方案,对工程长期安全运行具有重要意义。 Inverted siphon is more common in the South-North Water Diversion Project hydraulic structures, the main processes: diversion and cofferdam construction, drainage, earthwork excavation, steel pipe welding and welding, inverted siphon outsourcing reinforced concrete construction, supporting valve Well construction, earthwork backfill. The above is not only the main construction process, but also quality control points. Sinking inverted siphon works as an important hidden project, scientific organization to prepare its construction program, the long-term safe operation of the project is of great significance.