本文介绍了热喷涂加涂料封闭技术应用于水工闸门的情况， 介绍了其施工工艺及防腐机理， 并比较了其与其它防腐方法的经济效益情况。经多年的实践证明， 该方法防腐效果明显， 经济效益显著。 This paper introduces the application of thermal spraying and coating sealing technology to the hydraulic gate, introduces its construction technology and anti-corrosion mechanism, and compares its economic benefits with other anti-corrosion methods. After years of practice has proved that the method of preservative effect is obvious, significant economic benefits.