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一、引 论 长江三峡水库的最高水位如定为150米(标高,下同),而下游被葛洲坝壅高的水位是63—68米,故三峡船闸必须克服的最大水位差为87米. 为了利用与发展建设葛洲坝船闸所得的经验,于长江三峡建造三级船闸是合适的.因为长江三峡三级船闸的闸室和葛洲坝的尺寸相同,而每级水位差是29米,仅比葛洲坝船闸的水位差增加2米. 但葛洲坝的单级船闸只有一个闸室,而三峡的三级船闸有三个闸室,故葛洲坝船闸上下驶船舶对开一次,只耗一个闸室的水量,即34×280×27=257040米~3水量、全年若对开4320次,耗水量约为11亿米~3.而三峡船闸因为是三级船闸,故船舶对开一次需耗
I. INTRODUCTION The maximum water level of the Three Gorges Dam must be 87 meters if the maximum water level of the Three Gorges Reservoir is 150 meters (elevation, the same below) and the height of the downstream Gezhouba Dam is 63-68 meters. The experience of using and developing the construction of Gezhouba Ship Lock makes it appropriate to construct a three-stage ship lock in the Three Gorges of the Yangtze River because the lock chambers of the Three Gorges III lock and the Gezhouba Dam are the same in size and the water level difference at each level is 29 meters, The water level difference increased by 2 meters.But the Gezhouba single-stage lock has only one lock chamber, and the Three Gorges Three lock has three lock rooms, so Gezhouba lock up and down the ship off once, only consume one lock chamber of water, namely 34 × 280 × 27 = 257040 m ~ 3 water, if the year off 4320 times, water consumption is about 1.1 billion meters ~ 3. The Three Gorges ship lock because it is a three-stage ship lock, so the ship off a consumption