总干渠沙河南至黄河南段沿线全长约235km,穿越大小河流百余条,通过工程布置、优化和调整设计方案,沿线布置数量较大、规模不一的左岸排水,包括排水渡槽、排水倒虹吸和排水涵洞,从而确保总干渠的防洪安全,不恶化当地居民点的防洪、排涝条件。 The total length of the main canal, Shahe Nan to the Yellow River south section, is about 235km in length, crossing more than 100 rivers and streams. Through the project layout, optimization and adjustment design schemes, a large number of different sizes of left bank drainage including drainage aqueducts, Siphon and drainage culverts, so as to ensure the flood control safety of the main canal and not worsen the flood control and drainage conditions of the local settlements.