南昌红谷隧道沉管长1 329 m，共12节管节，标准管节长11485 m，高83 m，质量达26万t，沉管需在丰水季节浮运、沉放。为了解决沉管预制工期紧张、独立干坞设备配套需最大程度共享使用设备的问题，通过对混凝土拌合、运输、浇筑、温控技术以及沉管预制所涉及的模板体系、起吊设备等关键技术进行介绍，以解决主要工序工效控制及关键部位质量控制技术。工程实践表明，红谷隧道沉管预制设备选型及配套关键技术不仅加快了施工进度，解决了工序衔接问题，满足施工进度要求，而且沉管质量、结构尺寸也得到了有效保证。

Honggu immersed tunnel in Nanchang, China is 1 329 m long. The immersed tunnel consists of 12 tube elements. The standard tube element is 114.85 m long, 8.3 m high and 26 000 t weight. The tube elements should be floated, transported and sunk in the water rich season. Furthermore, the prefabrication schedule of the tube elements is tight and the equipment for the 2 independent subdocks needs to be shared to the maximum extent. In the paper, the concrete mixing, concrete transportation, concrete casting, temperature control and formwork system and hoisting equipment related to the prefabrication of the tube elements are summarized, so as to improve the working efficiency of the main construction steps and to ensure the construction quality of critical positions. In the end, good effect has been achieved. The engineering practice shows that the technologies adopted for the type selection and matching of the equipment for the tube element fabrication of Honggu immersed tunnel is feasible and rational. 