一、前言东台河闸是东台地区挡潮闸。为三孔钢结构弧形闸门。闸门高4.5米,宽10米,闸门面的弧长5.238米。闸门最低线标高为-1.0米。闸门下游一天两潮,最高潮时,水位超过门顶,低潮最低水位+0.8米。由于闸门漏水,故闸门上、下游附近的水质接近,除洪水期外,水质电阻率小于500欧姆·厘米。可采用铝合金牺牲阳极保护。洪水期闸门全开启时,牺牲阳极保护终止。 I. Introduction Dongtai Hezha Gate is tidal flats in Dongtai area. Three-hole steel structure of the arc gate. The gate is 4.5 meters high and 10 meters wide. The arc length of the gate is 5.238 meters. Gate minimum elevation of -1.0 meters. Two days a day downstream of the gate, the climax, the water level over the top of the door, the lowest low tide +0.8 meters. As the gate leakage, so the gate near the downstream water quality close to, except during the flood, the water resistivity of less than 500 ohm · cm. Aluminum sacrificial anode protection can be used. When the floodgate is fully open, sacrificial anode protection is terminated.