混凝土沉井施工港池即先在地面港池位置处预制多个沉井,然后在沉井内不断取土,使沉井在自重作用下逐渐下沉直到设计标高,最后在沉井内浇筑封底混凝土,回填砂。多个沉井组合成U字形,开口朝向河道。然后开挖U形中间部位土体,与河道连通,形成港池。沉井结构稳固可靠,施工简单,成本低,尤其是在软弱地质条件下更显出其优越性。使用组合 The concrete sunk well construction pool first prefabricated a number of caisson wells at the surface harbor basin and then continuously borrowed soil in the caisson so that the caisson gradually subsided under its own weight until the design elevation was reached. Finally, the concrete of the back cover was poured into the caisson, Backfill sand. Multiple sunken wells are combined into a U-shape with openings facing the river. Then excavation of U-shaped middle part of the soil, and river connectivity, the formation of port basin. The structure of the caisson is stable and reliable, with simple construction and low cost, especially its superiority under weak geological conditions. Use combination