三河闸是控制淮河下游洪泽湖蓄泄的一座大型水闸,闸身全长698米,岁修养护任务相当繁重,其中,又以闸门油漆工作量最大,技术也比较复杂。全闸63个闸门,需要油漆的面积达两万多平方米,由于闸门经常处于水下或干湿交替的状态,约有一半的面积容易锈蚀,一般每年都需要油漆三、四千平方米。加以闸墩上没有设置检修门槽,闸 Sanhe sluice is a large sluice that controls the storage of Hongze Lake in the lower reaches of the Huaihe River. The dam has a total length of 698 meters. The task of repairing and rehabilitating old people is rather heavy. Among them, sluice paint is the most heavily loaded and the technology is rather complicated. The gate of the gate 63, the need to paint an area of ​​over 20,000 square meters, because the gate is often in the water or wet and dry alternating state, about half of the area is easy to rust, usually every year need to paint three or four thousand square meters. No pier gate and gate are provided on the pier