【摘要】 在涪陵长江河段1：150正态模型上，进行有无溪洛渡水库拦沙情况下三峡水库按照156m方案运行的系列泥沙试验证明，若修建溪洛渡水库，该河段泥沙淤积总量将减少58．7％，水面比降降低0．054％～0．061％，这不仅对于改善该河段港区的航道条件，减少后期移民数量十分有利，而且对于改善整个三峡库尾的生态环境具有重要作用。更多还原

【Abstract】 Through a series of sediment experiements representing Fuling stretch of the Yangtze river at a normal scale of 1: 150 and at the Three Gorges reservoir normal water level of 156 rn, the mitigating effect of the Xiluodu reservoir on the sedimeflt de-position at the end of the Three Gorges reservoir was analized and reviewed. From the results of 10 year series sediment transport tests with the Xiluodu reservoir, the total sediment in this stretch could be reduced by 58. 7 % and the water surface slope dropped down by 0.054 % ~0.061 %. Accordiflgly, the navigation conditions along the stretch could not only be improved afld the number of people to be resettled in the later period decreased, but also it would have a significant effect on the improvement of the eco-lgocal balance for the Whole end of the Three Gorges reservoir.更多还原