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三河闸位于江苏省洪泽县境内,1953年建成,是我国大型节制闸之一。该节制闸有钢质弧形闸门63扇,闸门总面积为2万多平方米。由于闸门长期处于水下,极易发生锈蚀。 从建闸后到60年代中期,其防腐措施一直沿用传统的手工除锈涂漆技术。每到泄洪季节,将闸门全部提出水面,每年投入1万多劳动日,却只能除锈油漆10扇闸门,全部闸门除锈油漆一遍就要花6年时间,且一次油漆防腐有效期只有3至4年,闸门腐蚀速度远远超过防腐有效期限,其结果是闸门腐蚀情况日趋严重,直接威胁着工程的安全
Sanhe Gate is located in Hongze County, Jiangsu Province, built in 1953, is one of China’s large-scale control gates. The control gate has 63 steel arc gates, the total gate area of more than 20,000 square meters. As the gate in the water for a long time, prone to corrosion. From the gate to the mid-1960s, its anti-corrosion measures have been using traditional manual rust paint technology. Every flood season, the gate all raised the water surface, put more than 10,000 working days each year, but only derusting paint 10 gates, rust paint all over the gate to spend six years, and a paint anti-corrosion period of only 3 to 4 years, the gate corrosion rate is far beyond the effective period of corrosion, the result is an increasingly serious gate corrosion, a direct threat to the safety of the project