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葛洲坝大江船闸下引航道的设计通航标准为流量 35 0 0 0m3 /s时通航 6 0 0 0吨级船队 ,目前由于下游导航墙偏短、二江电厂泄水和泄水斜流的影响 ,加上泄水波的作用 ,只能在流量小于 2 0 0 0 0m3 /s时通航。本文介绍了长江委W整治方案 ,并做了补充修正 ,利用船模试验成果 ,修正了原航线。试验表明 ,大江船闸下引航道经整治后 ,可以达到原来的设计标准。同时论述了三峡水库对葛洲坝下游宜昌水位下降的影响 ,指出及早采用工程措施 ,抑止宜昌水位过多下降 ,对保障通航设施的运行是必要的
The design and navigation standard of the lower approach channel of Gezhouba Dasha River Lock is the fleet of 600-ton ships with a flow rate of 35 0 0 0 m3 / s. Due to the shortening of the downstream navigation wall and the spillway and discharge of the two rivers, Coupled with the role of drainage wave, only when the flow is less than 2000m3 / s when navigation. This article introduced the Yangtze River Commission W remediation program, and made additional amendments to the use of model test results, the original route was amended. Tests show that after the reed waterway under waterway regulation, can meet the original design standards. At the same time, it discusses the influence of the Three Gorges Reservoir on the Yichang water level drop downstream of the Gezhouba Dam. It is pointed out that the early adoption of engineering measures to prevent excessive water level drop in Yichang is necessary to ensure the operation of navigation facilities.