Study on the Mode of the River Channel Shrinking in the Lower Yellow River
The wandering reach of the Lower Yellow River has been continuously shrunk over the recent 20 years, which brings great threat to flood prevention. In order to find out the cause and the pattern of the watercourse shrinking, the movable bed physical model experiment was carried out. The result reveals that the development of watercourse shrinking changes with different water-sediment conditions. It can be classified into two categories, according to the position of deposition, of concurrently silting of bank and channel and centralized channel deposition. Meanwhile, there is also a phenomenon called deposition without shrinking. Because watercourse shrinking is a complicated development process, whether the watercourse shrinks or not should be judged by such essential factors as the area of the wetted cross-section and the mean elevation of the main channels riverbed and so on, with the exception of the breadth depth ratio of the cross-section.
river channel shrinking concurrently silting of bank and channel centralized channel deposition Lower Yellow River
Wang Weihong Chang Wenhua Zuo Weiguang
Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou, 450003, China
国际会议
山东东营
英文
38-43
2007-10-16（万方平台首次上网日期，不代表论文的发表时间）