摘要
对兼具"浅、急、弯、险"特点的黄河宁夏中卫下滩河段的复合型滩险整治技术进行研究。在深入分析滩性的基础上,提出多方案设计,通过物理模型试验优化比选。试验表明:挖槽上段采用复式断面、增加滩险进口段宽度和深度,有利于减小滩段水面比降、减小流速。尽管上段水位降幅较大,给上游河段带来不利影响,但整治效果最佳。工程实施后通航水流条件良好,航道条件得到有效改善,为类似滩险的整治提供参考。
The regulation technology of complex rapids in the Yellow River of Ningxia autonomous region which is shallows, rapid, bending and dangerous is researched. Based on the analysis of the rapids＇ characteristics, we propose four regulation design schemes which are optimized through comparison by physical model experiments. The results show that the best regulation scheme uses duplex section in the upper segment of dredging to increase the depth and width of the inset segment of rapids, which is conducive to reduce the water surface slope and flow rate. Although it creates an adverse impact on the upper reaches due to the sharply decreased water level, it has the best regulation effect. The navigation ~ondition is improved remarkably after implementation of the project and navigation flow conditions are satisfactory. It may serve as reference for the regulation of similar rapids.
出处
《水运工程》
北大核心
2015年第5期133-138,共6页
Port & Waterway Engineering
关键词
复合型滩险
航道整治
物理模型
complex rapids
channel regulation
physical model
