我县水利工程所有的金属结构闸门共32扇,计1809m~2。在1980年前,均采用油漆涂料防腐,造价虽低,但保护周期短、用工量大,而水库输水洞钢闸门,其涂刷难度较大,效果差,使闸门锈蚀近2 mm。从1981年开始,我们采用喷锌防腐,并装备了一 My county water conservancy project all the gates of the metal structure a total of 32 fans, accounting for 1809m ~ 2. Pre-1980, are used paint anti-corrosion, the cost is low, but the protection cycle is short, large amount of labor, and the reservoir water hole steel gate, its brushing more difficult, the effect is poor, the gate rust nearly 2 mm. Since 1981, we have used zinc spray preservative and equipped with one