【摘要】 从水沙运动与河道演变的关系研究乌江狮子口滩群弯曲航道演变与碍航机理。应用河道演化所遵从的最小水流功率损失判据,分析了滩险成因;考察了复杂滩群弯道水流能量在空间上的分配特点;比较了不同整治方案的物理模型试验结果;探寻有效的整治措施并总结复杂滩群弯曲航道整治的特点。研究结果对山区河流在弯曲航道段复杂滩群碍航整治有借鉴意义。更多还原

【Abstract】 The evolution of the shoal patches of Shizikou,Wujiang River and its waterway regulation is studied.Form the viewpoint of relations between the sediment transport and the river channel evolution,the obstructing navigation mechanism is elucidated.The principles of minimum energy dissipation rate observed by the evolutional processes of channel morphology are applied.The properties of energy distribution in space of the complex shoals in curved river channel regulating is explored.The effective concrete regulating measures are explored for the complex shoals in curved mountain river channel on the basis of physical experiments.The properties of complex shoals of curved river regulation are summarized finally,and the results are valuable to regulation study of the mountainous rivers.更多还原