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葛洲坝水利枢纽二号船闸有效通航尺寸为长280米,宽34米,槛上水深5米,最大水位差为27米。这是目前国内最大的船闸,也是世界上少见的大型船闸。船闸上下闸首的工作门均采用人字门。下闸首的人字门单扇门宽19.7米,高34.05米,重达600吨,运转时的最大淹没水深为20.5米(下游最高通航水位54.5米,下游门槛高程为34.0米)。
The effective navigation of No.2 lock of Gezhouba Water Control Project is 280 meters in length and 34 meters in width with a water depth of 5 meters on the threshold and a maximum water level difference of 27 meters. This is the largest ship lock in the world and is also a rare large ship lock in the world. Lock gates above and below the gates are used Miter door. The gate of the gate under the gate of the Miter single-door 19.7 meters wide, 34.05 meters high, weighing 600 tons, the maximum submerged operation depth of 20.5 meters (downstream highest navigable water level of 54.5 meters, the lower reaches of the threshold of 34.0 meters).