温州市“南水北调”过江给水管道设计与施工案例

Design and Construction of Cross-river Water Supply Pipes for the South-to-North Water Diversion Project in Wenzhou

温州市“南水北调”工程是有效缓解乐清水资源供需矛盾、保障广大群众饮水安全的应急清水供水管道工程,供水规模为10×10^(4) m^(3)/d,管线桩号总长约8.6 km,其中龙湾段采用DN1 400给水管,瓯江南北汊过江段采用2×DN1 000双管布置,七都段采用DN1 200给水管,管道设计总长约11.2 km。该工程采用水平定向钻法进行给水管道过江穿越,介绍了设计及施工要点,评估了工程影响,并给出了相应的质量控制措施。该工程的顺利实施可为长距离大口径给水管道施工提供借鉴。

The South-to-North Water Diversion Project with supply capacity of 10×10^(4) m^(3)/d in Wenzhou,is an emergency water supply pipeline project that effectively alleviates the supply-demand contradiction of water resources in Yueqing and ensures the safety of drinking water for the general public.The total pipeline pile length is approximately 8.6 km and the overall design pipeline length is around 11.2 km.Among them,DN1 400 water supply pipes are utilized in Longwan section,a 2×DN1 000 dualpipe arrangement is employed in Oujiang River's north and south branches,while DN1 200 water supply pipes are used in Qidu section.The project adopts the horizontal directional drilling method for water supply pipeline to cross the river.Its design and construction points are elaborated,the impact of the project is evaluated,and the corresponding quality control measures are provided.The successful execution of this project could provide reference for the construction of long-distance,large-diameter water supply pipelines.