在河流上兴建拦河闸坝,改变了天然河流的相对平衡条件,再加上船闸必须有满足船队(舶)运行要求的引航道和水流条件,须根据地形和枢纽布置,在靠河侧修建隔流分水建筑物,将河流动水隔开,或是另行开挖引航道,形成完全不同于主河道水流条件的相对静水渠道,其淤积是不可避免的。且 The construction of a barrage dam on the river has changed the relative balance of the natural river. In addition, the ship lock must have access roads and water flow conditions that meet the operation requirements of the fleet (ships). According to the terrain and hub layout, Building silos and diversion structures, separating the river water or excavating the diversion channel to form a relatively hydrostatic channel completely different from that of the main channel will inevitably cause siltation. And