国外项目中大型沉箱的预制、出运在设备资源匮乏的条件下是一个较大的难题。以柬埔寨燃煤电厂工程为例,介绍围堰内预制沉箱、起重船吊扶沉箱工艺,克服了传统出运方式的局限性,在没有沉箱预制场和专用出运设施条件下实施了沉箱预制和出运;介绍起重船吊扶沉箱过程中吊点设置、密封处理、没顶沉箱安装过程中的计算及施工关键技术。该工程的成功实践,可为国外大型沉箱的预制和出运安装提供借鉴。 Foreign projects in large caissons prefabricated, shipped under the conditions of lack of equipment resources is a big problem. Taking Cambodia’s coal-fired power plant project as an example, this paper introduces the technology of precast caissons and crane lifting caisson in cofferdam to overcome the limitations of traditional shipping methods. The caisson is prefabricated without caisson prefabrication and special delivery facilities And shipped out; the lifting crane suspended crane lifting caisson set the process of setting, sealing process, no roof caisson installation process of calculation and construction of key technologies. The successful practice of this project can provide reference for the prefabrication and shipment of large caissons abroad.