长江中下游航道整治断面初探

Preliminary research on navigational channel regulation section of middle & lower Yangtze River

长江中下游航道整治参数源于山区或中小河流的浅滩整治经验,用于工程设计存在不适应性。在分析长江中下游浅滩成因、归纳总结已实施航道整治工程整治参数确定方法的基础上,对整治参数在长江中下游航道整治工程中的适用性进行探讨;从浅滩航道整治的基本要求出发,运用河流动力学原理,首次提出整治断面的概念,初步提出长江中下游航道整治参数内涵及确定方法,并结合长江中下游航道整治对其合理性进行分析。

Navigational channel regulation parameters of the middle and lower Yangtze River are derived from the shoal regulation experience of mountain rivers or small plain rivers and are not exactly applicable for the engineering design. Based on the analysis of shoal formation causes and the summary of regulation parameters about implemented channel regulation engineering, the article discusses the adaptability of regulation parameters in the middle and lower reaches of the Yangtze River. From the basic requirement of navigational channel regulation, according to the fluvial mechanism, the article firstly proposes the concept of ＂regulation section＂, initially put forward the connotation and calculation method of the middle and lower Yangtze River navigational channel regulation parameters, and analyzes its rationality combined with the middle and lower Yangtze River channel regulation.