在通航水域进行疏浚和吹填工程,有时会产生排泥管与通航的矛盾,解决这个矛盾的最好方法是把排泥管沉到河底,但水下排泥管的敷设、保护和回收是不容易的,特别是当排泥管要穿过深水急流的河床更感困难。水下排泥管的敷设,大致可分为三个阶 Dredging and reclamation works in navigable waters may sometimes lead to contradictions between mud-discharging pipes and navigation. The best way to solve this contradiction is to sink the mud-discharging pipes to the river bottom. However, the laying, protection and recovery of underwater mud-discharging pipes Is not easy, especially when it is more difficult for the slug to pass through the deepwater rapids of the riverbed. Underwater mud pipe laying, can be roughly divided into three steps