河道调整研究现状及其对黄河下游游荡型河道调整的启示

系统梳理了河道调整研究现状,全面论述了与冲积河流调整相关的河相关系、不同边界下河道调整过程、冲积河流线性理论的研究现状及发展动态。新形势下黄河下游游荡型河道调整应重点研究水沙变化与有限控制边界对河道调整的耦合效应、河道断面自调整数理分析中断面形态假定、有限控制边界条件下游荡型河流主槽摆动幅度和频率等问题,这不仅有助于加深对游荡型河道河床演变规律的认识,而且对于河道调整趋势预测、河道整治等具有重要的理论意义。

Current research status of river regulation and its enlightenment to wandering river regulation in the lower reaches of the Yellow River

By systematically reviewing the current research of river regulation, the research situation and development tendency on the issue of hydraulic geometry related to alluvial river adjustment, channel adjustment process under different boundaries and the alluvial river linear theories were comprehensively discussed. The following problems should be focused on in the adjustment of wandering channel in lower reaches of Yellow River under new situation, including the coupling effect of flow and sediment change and limited control boundary on river regulation, the section shape assumption in the mathematical analysis of channel section self-adjustment, and the main channel oscillating amplitude and its frequency on the wandering river under partly controlled boundaries. Further study on these issues is not only helpful to deepen the understanding of wandering river fluvial process, but also has significant theoretical and practical values in prediction of river channel adjustment trend and river regulation.