长江中游宜昌至城陵矶河段河道演变分析

 对长江中游宜昌至城陵矶河段，近30年来实施下荆江裁弯工程和兴建葛洲坝水利枢纽后的河道演变进行了分析，预计三峡工程建成后，本河段总体河势仍将保持稳定，局部河段的河势可能发生不同程度的调整，应加强河道演变观测，采取护岸工程措施，控制有利河势。

Investigation to River Channel Evolution in Middle Yangtze River from Yichang to Chenglingji

In this paper, the channel evolution of middle Yangtze River from Yichang to Chenglingji during the last 30 years is analysed after conducting the cutoff project at the lower Jingjiang reach and the completion and successful operation of the Gezhouba Project. Based on above analysis, it is predicted that the river regime of this reach can be kept stable in general after the Three Gorges Project being finished, but that of partial reach may be more or less changed. Thence, the prototype observation must be strengthened and the bank protection works would be employed in order to keep a favorable regime.