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能抗百年一遇洪水三峡工程是当今世界最大的水利枢纽工程。5月20日,三峡大坝达到海拔185米的设计高程,全线建成。水利专家分析,如果1998年长江流域发生大洪水时已建成了三峡工程,采取合理的水库调度方式,可使长江中下游水位平均下降约1米,长江中下游防洪形势就能根本改观。按照工程设计,发生100年一遇以上洪水至1000年一遇洪水,经三峡水库调节后,可以使枝城最大泄量不超过80 000立方米/秒,再配合运用荆江分洪区及其他分蓄洪区,可以使沙市水位不超过45米,避免荆江两岸堤防决口,还可以配合丹江口水库和武汉附近的分蓄洪
Can fight the floods in a hundred years Three Gorges Project is the world’s largest water control project. May 20, the Three Gorges Dam reached an elevation of 185 meters of design elevation, completed across the board. According to the analysis of water conservancy experts, if the Three Gorges Project was completed at the time of the great flood in the Yangtze River Basin in 1998, the water level in the middle and lower reaches of the Yangtze River will be reduced by about 1 meter on average and the flood control situation in the middle and lower reaches of the Yangtze River can be fundamentally improved. According to the engineering design, once a flood occurred in more than 100 years to a flood in 1000 years, after the Three Gorges Reservoir is adjusted, the maximum discharge of Zhicheng can not exceed 80,000 cubic meters / second. Combined with the use of Jingjiang Flood Diversion Area and other sub-flood storage District, you can make the water level in Shashi not more than 45 meters, to avoid the embankment across the Jingjiang River breach of the mouth, but also with Danjiangkou reservoir and sub-flood near Wuhan