在给水排水工程施工中,有时会遇到新建给排水系统与现有给排水明渠侧壁相接,且明渠较窄不宜作草袋围堰的情况。这里介绍一种不需停水,且较为经济简便的施工方法,即在给水明渠内沉放围堰,保证施工范围内干燥无渗水,进行取水口接头施工。 In the construction of water supply and drainage works, it is sometimes encountered that the new water supply and drainage system is connected with the side walls of the existing water supply and drainage nullahs, and the narrow open channels are not suitable for grass bag cofferdams. Here is an introduction of a construction method that does not require water stoppage and is more economical and simple. It consists of sinking cofferdams in the open channel to ensure that there is no water seepage within the construction area, and to perform joint construction at the water intake outlet.